Datasheet HTRM800-AED Datasheet (Philips)

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Page 1

INTEGRATED CIRCUITS

DATA SH EET

HTRM800 family

HITAG long range reader module hardware

Product speciﬁcation Supersedes data of 1999 Jan 01 File under Integrated Circuits, IC11

2001 Oct 04

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

CONTENTS

1 FEATURES 2 APPLICATIONS 3 GENERAL DESCRIPTION 4 ORDERING INFORMATION 5 BLOCK DIAGRAM 6 PINNING

6.1 ST1 connector

6.2 ST2 connector 7 FUNCTIONAL DESCRIPTION

7.1 System overview

7.1.1 Transponders

7.1.2 Antenna

7.1.3 Host system

7.1.4 I/O functions

7.1.5 Power supply

7.2 Reader module software

7.3 Reader module hardware

7.3.1 Microcontroller

7.3.2 Interface microcontroller to host

7.3.3 Transmitting part

7.3.4 Receiving part

7.3.5 Digital signal processing unit

7.3.6 Periodic disturbers

7.3.7 Voltage regulating unit

7.3.8 Standby mode

7.3.9 Behaviour with HITAG 1 transponders

7.3.10 Behaviour with HITAG 2 transponders

7.4 Postal approval

7.5 Operating security

7.5.1 Anticollision mode

7.5.2 Monitoring the supply voltage

7.5.3 Antenna rupture and antenna short-circuit

7.6 Security considerations

7.6.1 Data privacy

HTRM800 family

8 ELECTRICAL SPECIFICATIONS 9 MECHANICAL SPECIFICATIONS 10 APPLICATION INFORMATION

10.1 Metallic environment and interferences

10.2 Distance between two antennas

10.3 External power supply

10.4 Possible sources of errors by connecting the HTRM800

10.5 Building HITAG long range antennas

10.5.1 Basics

10.5.2 Recommended antenna cable and length

10.5.3 Tuning of the antenna current

10.5.4 Tuning of the antenna phase

10.5.5 HITAG antenna tuning device

10.5.6 Antenna malfunction indication

10.5.7 Additional remarks

10.6 Antenna arrangements

11 SURVEY OF REFERENCED DOCUMENTS 12 DATA SHEET STATUS 13 DEFINITIONS 14 DISCLAIMERS

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

1 FEATURES

• Multi-tag operation (anticollision)

• Read and write distances up to 1000 mm

• Digital signal processor to reduce noise sensitivity

• Communication with all HITAG transponders and

various other 125 kHz transponders

• Data encryption and key handling

• Easy system integration

• Three interface options

• Meets all requirements for CE and EMI approval.

2 APPLICATIONS

• Universal and flexible reader module for long range systems.

3 GENERAL DESCRIPTION

(1)

HITAG product lines of our 125 kHz family. The contactless read and write system that works with passive transponders is suitable for various applications.

is the nameof one of the universal and powerful

HTRM800 family

Inductive coupling helps you to achieve operating ranges up to 1000 mm and the use of cryptography guarantees highest data security.

Anticollision mode, which is used only in long range operation, allows you to handle several transponders that are within the communication field of the antenna at the same time, thus achieving highest operating security and permitting to handle several data transfers quickly and simultaneously. In this context anticollision becomes an essential element of applications such as ski-ticketing and long range access control. With applications of that type it will always happen that several transponders arrive in the communication field of the antenna at the same time.

(1) HITAG - is a trademark of Philips Semiconductors

Gratkorn GmbH.

4 ORDERING INFORMATION

PART NUMBER NAME ORDER CODE (12NC)

HTRM800/AED HITAG long range reader module RS232 9352 338 40122 HTRM800/CED HITAG long range reader module RS485 9352 338 50122 HTRM800/EED HITAG long range reader module CMOS 9352 338 60122

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

5 BLOCK DIAGRAM

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125 kHz

LINE DRIVER

CMOSIN

CMOSOUT

INT1 INT2 RXD

TXD

+15 V IN

GND

−15 V IN

CMOS

OPTIONAL

RS485

OPTIONAL

RS232

VOLT AGE

REGULATOR

AMPLIFIER

DEMODULATOR

CORE MODULE

FILTER

DIGITAL SIGNAL

PROCESSOR

MICRO-

CONTROLLER

HTCM400

VOLT AGE

LIMITER

HTRM800

HTRM800 family

ANT

GND

antenna

CMIN

CMOUT

MGU417

6 PINNING

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ST1

Fig.1 Block diagram.

R72

HTRM800

ST2

21ANT

GND

Fig.2 Pin assignment.

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HITAG long range reader module

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hardware

6.1 ST1 connector

SYMBOL PIN TYPE

−15VIN 1 P DC supply voltage (−15 V) GND 2 P ground +15VIN 3 P DC supply voltage (+15 V) GND 4 P ground RXD 5 I serial interface input; RS232 level GND 6 P ground CMOSIN 7 I serial interface input; CMOS level (optional) INT1 8 I/O serial interface input and output 1; RS485 level (optional) CMIN 9 I core module input; general purpose CMOUT 10 O core module output; general purpose GND 11 P ground GND 12 P ground INT2 13 I/O serial interface input and output 2; RS485 level (optional) CMOSOUT 14 O serial interface output; CMOS level (optional) GND 15 P ground TXD 16 O serial interface output; RS232 level GND 17 P ground +15VIN 18 P DC supply voltage (+15 V) GND 19 P ground

−15VIN 20 P DC supply voltage (−15 V)

(1)

DESCRIPTION

Note

1. P = power supply, O = output and I = input.

6.2 ST2 connector

SYMBOL PIN DESCRIPTION

GND 1 ground ANT 2 antenna output and input

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HITAG long range reader module hardware

7 FUNCTIONAL DESCRIPTION

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HOST

SYSTEM

POWER SUPPLY

antenna

HTRM800

I/O FUNCTIONS

Fig.3 System overview.

HTRM800 family

HITAG 1

transponders

HITAG 2

transponder

MGU419

7.1 System overview

The HITAG long range reader module (see Fig.3) is a part of a complete Radio Frequency Identification (RFID) system which consists of:

• Transponders

• Antenna

• Host system

• I/O functions

• Power supply.

7.1.1 TRANSPONDERS

TheHTRM800cancommunicatewithtranspondersbased on Philips HITAG 1 and HITAG 2.

7.1.2 ANTENNA

The antenna is an important part of the HITAG long range system. The antenna must provide energy and data transmissionbetween the reader moduleand transponder.

7.1.3 HOST SYSTEM

The connection to the host system (e.g. microcontroller or PC) is a serial interface on RS232 level for data transmission.

7.1.4 I/O FUNCTIONS

One line of the HTRM800 is wired as input from e.g. a switch and one line as output to drive a LED.

7.1.5 POWER SUPPLY The HTRM800 must be supplied from an external power

supply with +15 V and −15 V (see Section 10.3).

7.2 Reader module software

Software command names mentioned in this data sheet are fully described in document

“HTCM400, HTRM440 Family, HTRM800 Family Interface Protocol Reader Host”

7.3 Reader module hardware

7.3.1 MICROCONTROLLER The microcontroller is placed on the HITAG core module

(see Fig.1) and processes the protocol for the communication between the transponders and the reader module. The interface signals are converted so that the transponders are able to process them and the outgoing signals from the transponders are converted into interface-compatible signals.

The second essential microcontroller function is its control function.Themicrocontrolleractivatesand deactivates the transmitter and switches the receiver between the modes for the different transponders reception.

Additional functions of the microcontroller are controlling the standby mode of the amplifier, detection of detuned or broken antennas (antenna malfunction) and controlling of the input and output for general purpose.

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7.3.2 INTERFACE MICROCONTROLLER TO HOST Thedevicecommunicates with the host system via a serial

interface using a baud rate of 9600 baud. Data transfer details are: 1 start bit, 8 data bits, 1 stop bit, no parity bit and the least significant bit is sent first.

Version HTRM800/AED has an integrated RS232 level driver. Version HTRM800/CED is wired with an RS485 level driver and version HTRM800/EED is wired with a CMOS level driver.

7.3.3 TRANSMITTING PART For transmitting power and data to the transponder a

125 kHz sine signal is switched by the microcontroller and amplified. The amplifier is designed as a current source. A voltage limiter is used to clamp the output voltage of the amplifierduring the decay and transient phases of the sine signal.

7.3.4 RECEIVING PART After filtering and demodulation of the amplitude

modulated signal received from the transponder, the receiveddataisconverted and passed to the Digital Signal Processing (DSP) unit for further processing.

7.3.5 DIGITAL SIGNAL PROCESSING UNIT The receiving part of the reader module includes

bandpass filters which attenuate disturbances (3 dB attenuation at 105 and 145 kHz). For disturber frequencies near the 125 kHz (e.g. harmonics of the line frequency of PC monitors, long wave transmitters) a fourier transformation is used to recognize harmonic disturbersand to eliminate their influence. TheDSPis also responsible for separating the responses of different transponders during anticollison cycles (multiple transponder operation).

HTRM800 family

reader module and transponder the located disturbers are eliminated. The command StartFFT should be executed as often as the application allows.

Remarks:

1. The DSP is able to suppress up to two harmonic

electromagnetic disturbances

2. During FFT is running (about 110 ms) communication

with a transponder is not possible.

7.3.7 VOLTAGE REGULATING UNIT The reader module contains some filtering circuits which

supply all parts of the reader module with the required voltages. Nevertheless some requirements are to be fulfilled by the external power supply. This means the maximum ripple of the supply voltages must not exceed the values specified in Chapter 8.

7.3.8 STANDBY MODE The HTRM800 offers a software controlled standby mode.

This mode can be activated and deactivated by the host system.Duringthestandbymodetheamplifieristurnedoff and the power consumption decreases drastically.

7.3.9 BEHAVIOUR WITH HITAG 1 TRANSPONDERS If several HITAG 1 transponders arrive simultaneously

within the communication field of the antenna of a HTRM800, all the transponders (theoretically up to 232) within the communication field of the antenna can be read and written simultaneously. Because of the mutual influence of the transponder coils - they detune each other if there are too many too close to each other - the number ofthetranspondersthatcanbe operated simultaneously is limited.

7.3.10 BEHAVIOUR WITH HITAG 2 TRANSPONDERS

7.3.6 PERIODIC DISTURBERS Thereareacoupleofpossiblesourcesfordisturbancesfor

a 125 kHz system like HITAG. The HTRM800 is designed to handle this problem and achieve optimal performance under worst conditions.

Long wave transmitters, other 125 kHz systems and PC monitors are examples for periodic disturbers which can be relevant for 125 kHz systems. To eliminate these disturbers the digital signal processing unit is used.

After the command StartFFT is sent to the reader module a Fast Fourier Transformation (FFT) is started to locate periodic disturbers. After about 110 ms this calculation is finished and for the following communication between

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If several HITAG 2 transponders arrive simultaneously within the communication field of the antenna of a HTRM800, the ‘stronger’ transponder (the nearer one) takes over or - under special circumstances - no communication takes place. If the transponders arrive in the field one after the other, communication is established with the first one, all the other transponders are ignored. This ensures that no two (or several) HITAG 2 transponders will ever be processed (above all written to!) accidentally at the same time. By muting a selected HITAG 2 transponder (HALT mode) another HITAG 2 transponder that is to be found in the communication field of the antenna can be recognized.

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module

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7.4 Postal approval

The postal approval can only be granted for final products, not just for components like the HTRM800. But this reader module is designed in a way that it is possible to get the postal approval for a system including the HTRM800.

Electromagnetic emissions comply with the guidelines in FTZ 17 TR 2100, ETS 300 330 and ETS 300 683. Electromagnetic immunity complies with the guidelines in ETS 300 683.

Table 1 Survey of measurements

ITEM MEASUREMENT STANDARD REQUIREMENTS

EMI electromagnetic emission ETS 300 330, Sep 1994 FTZ 17 TR 2100 RFI emission limit class EN 55022, 1987 Immunity RF electromagnetic ﬁeld ENV 50140 80 to 1000 MHz: 3 V/m, AM 80%, 1 kHz

electrostatic discharge IEC 801-2, 1991 contact discharge: 4 kV; air discharge: 8 kV electrical fast transient

(burst) RF common mode ENV 50141 current clamp injection 150 kHz to 80 MHz:

voltage dips and interruptions

surges, common and differential mode

IEC 801-4, 1988 signal ports: 0.5 kV; DC power ports: 1 kV;

IEC 1000-4-11 reduction of 30% of UN for 10 ms, of 60% of

IEC 1000-4-5 AC power input ports: 1 kV

The following configuration is in compliance with the European telecommunication standards:

• Reader module HTRM800

• Power supply according to the recommendations

(transformer type)

• Antenna: 50 × 70 cm, number of turns N = 26 and

inductivity L = 1.2 mH.

A survey of the passed measurements is given in Table 1.

AC power ports 2 kV

3 V (rms), AM 80%, 1 kHz

UN for 100 ms, voltage interruption for 5 s

(lines-to-ground), 0.5 V (line-to-line)

7.5 Operating security

The following mechanisms ensure the operation security of the HITAG system:

• Anticollission mode

• Monitoring the supply voltage

• Antenna rupture and short circuit.

7.5.1 ANTICOLLISION MODE Anticollision mode in long range applications permits you

to process several HITAG 1 transponders simultaneously. Theoretically up to 232 HITAG 1 transponders can be processed simultaneously. In practice this number is limited, because of the mutual influence of the transponders. They detune each other, if there are too many too close to each other. In long range applications using HITAG 2 transponders, only one transponder is handled even if there are several transponders within the communication field of the antenna. In this case either no communication takes place or the ‘stronger’ or closer transponder takes over.

By muting a selected transponder (HALT mode) another transponder that is to be found in the communication field of the antenna can be recognized.

7.5.2 MONITORING THE SUPPLY VOLTAGE The supply voltage is controlled by a watch dog circuit

which triggers a system reset if the supply voltage of the core module drops below 4.75 V or if the microcontroller fails.

7.5.3 ANTENNA RUPTURE AND ANTENNA SHORT-CIRCUIT TheHTRM800doesnotgetpermanentlydamagedincase

of an antenna rupture or a brief antenna short-circuit. The detection of detuned or broken antennas (antenna malfunction) is possible.

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Philips Semiconductors Product speciﬁcation

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7.6 Security considerations

Developing the HITAG system special consideration was given to aspects of security. The following items represent the fundamental framework of the security concept:

• Cryptography

• Mutual authentication

• Password verification

• Cyclic Redundancy Check (CRC).

7.6.1 DATA PRIVACY The use of cryptography (stream cypher), mutual

authentication, and password verification prevents monitoring and copying the data channel. Therefore, the area of the transponder that only can be accessed enciphered is called ‘secret area’.

To make use of cryptography for HITAG 1 transponders you need:

• Keys to be used for initializing of the crypto block

• Logdata to be used for mutual authentication.

HTRM800 family

To make use of cryptography for HITAG 2 transponders you need:

• A key which is used to initialize the crypto block using

HITAG 2 in crypto mode

• Passwords which are used for authentication for

HITAG 2 in password mode.

The transponders and the HTRM800 are provided with identical transport keys and transport logdata so that you can start operating them right away (see Table 2).

In order to offer our OEM clients high flexibility, the configuration of the transponder memory, password, keys and logdata can be changed. We strictly recommend to rigorously restrict these possibilities for the end customers (by setting the configuration page to read only, setting password, keys and logdata to neither read nor write).

Table 2 Transport values predeﬁned by Philips.

SYSTEM PARAMETER VALUE

HITAG 1 keyinit password 0x00000000

keys 0x00000000 logdata 0x00000000

HITAG 2 keyinit password 0x00000000

key 0x4D494B524F4E password TAG 0xAA4854 password RWD 0x4D494B52

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module

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8 ELECTRICAL SPECIFICATIONS

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

Power supply

ripple(rms)

Modulation

Interface to host

Temperature

oper

stg

positive supply voltage − 15 − V positive supply current operating mode − 400 550 mA

standby mode − 200 − mA negative supply voltage −−15 − V negative supply current operating mode −−300 −400 mA

standby mode −−100 − mA maximum amplitude of ripple on

supply voltage (RMS value)

modulation ratio of reader module

< 0.5 kHz − 48 − mV

ripple

= 0.5 to 20 kHz − 7 − mV

ripple

= 20 to 120 kHz − 36 − mV

ripple

= 120 to 130 kHz − 12 − mV

ripple

> 130 kHz − 48 − mV

ripple

note 1 − 100 − % to transponder

modulation ratio of transponder to

note 2 −−−% reader module

transmission speed − 9600 − baud

operating temperature −25 − +70 °C storage temperature −40 − +85 °C

Notes

1. Modulation type is Amplitude Shift Keying (ASK). A modulation ratio of 100% means the carrier is blanked completely, the information is located in the intervals between the pauses.

2. Modulation type is Amplitude Shift Keying (ASK). The modulation ratio depends on the distance between transponder and reader module.

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2001 Oct 04 11

160

3.58

152.86

130.4 A

9 MECHANICAL SPECIFICATIONS

Philips Semiconductors Product speciﬁcation

HITAG long range reader module

hardware

Dimensions in mm.

88.90

5.56

3.50

Fig.4 HTRM800 long range reader module.

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10092.7

HTRM800 family

AA - A

MGU420

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

10 APPLICATION INFORMATION

10.1 Metallic environment and interferences

The communication range is impaired by metallic environment and electromagnetic interferences (e.g. monitors and keyboards). Therefore, you should keep a distance of at least one time the antenna diameter to metallic surfaces or loops as well as to electromagnetic interferences. If this is not possible, you have to take preventivemeasures such as using ferritesor shielding for transponder and antenna.

The HTRM800 is able to suppress up to two harmonic electromagnetic disturbances.

handbook, full pagewidth

STANDARD

NET

FILTER

F1 F2

OPTIONAL

VOLT AGE

SELECTOR

HTRM800 family

10.2 Distance between two antennas

In order to be able to operate two systems side by side without negative influence on communication ranges, you must place the antennas at a minimum distance. To keep this distance low, magnetic shielding must be realized. This topic is handled in detail in application note

Design for the HITAG Long Range System”

10.3 External power supply

Instead of a transformer type supply unit (see Fig.5), a switching frequency power supply unit can be used alternatively. The switching frequency must be in the range from 165 to 210 kHz (overtemperature, load and production).

800 mA (18 V)

1N4001

B C

MGU423

“Antenna

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F1 = depends on the type of transformer. F2 = 800 mA delayed. F3 = 800 mA delayed. D1 = D2 = D3 = D4 = 4 x 1N4001.

2200 µF (40 V)

IN4001

72 µH 3A

100 nF

72 µH 3A

100 nF

10 µF (40 V)

7815

100

7915

IN4001

Fig.5 Transformer type power supply.

10 µF (18 V)

+15 V

1 kΩ

GNDC

1 kΩ

−15 V

MGU424

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

10.4 Possible sources of errors by connecting the HTRM800

The following error list should be checked if any error (e.g. readorwrite distances that do not reach the specified values) occurs:

• Power supply cable not mounted correctly

• Power supply voltage not in the specified range

• Serial interface not connected correctly

• Interference received by the antenna because of an

external noise source (e.g. monitor, keyboards); the remedial measure is to remove the antenna from the interfering area and use the command StartFFT

• Connecting cables of the antenna changed by mistake

• Antenna is mounted in metal environment; the remedial

measureistomountanon-metal space keeper between the antenna and the metal

• Antenna is not designed following the antenna design

instructions

• Inductance of the antenna is not in the specified range

• Quality factor of the antenna is not in the specified

range.

HTRM800 family

10.5 Building HITAG long range antennas

10.5.1 BASICS Theexact way how todesign a HITAG long rangeantenna

is described in application note

HITAG Long Range System”

The antenna is an important part of the HITAG long range system. The antenna must provide energy and data transmissionbetweenthereadermodule and transponder. Therefore, you should be particularly careful when implementing the antenna in order to achieve optimum results.

The equivalent circuit of the antenna is shown in Fig.6. The requirements of the antenna coil are:

• Quality factor: Q = 30 to 60 X

where

-----R

Xs= effective series reactance Rs= effective series resistance

• Inductance: L = 400 to 1200 µH.

“Antenna Design for the

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VOLT AGE

LIMITER

HTRM800

coax cable

Fig.6 Basics of the long range antenna.

antenna

MGU421

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10.5.2 RECOMMENDED ANTENNA CABLE AND LENGTH The length of the antenna cable should be limited with five

meters. In case of longer cables a type with low capacitance and resistance must be used. For standard applications a 50 Ω coaxial cable is recommended and a 75 or 95 Ω coaxial cable for special applications.

10.5.3 TUNING OF THE ANTENNA CURRENT Potentiometer R72 (see Fig.2) is used to tune the current

driven through the antenna. The default setting is 200 mA. It is not customary to change this value. However, if you want to change the current for a special application, it should be noted that V

10.5.4 TUNING OF THE ANTENNA PHASE The signal from a transponder is delayed by the decay

time of the antenna. To achieve optimal performance this signal and the digital signal processing unit of the reader modulemustbesynchronous.Thusitisnecessarytostore aphase information called BitClock Delay (BCD), which is a function of the quality factor and the inductance (reactance) of the antenna.

The default setting is 7 which is suitable in most of the cases. Apart from that, the user is able to change the BCD value. The reader module includes a non volatile memory (EEPROM) to store the bit clock delay. To load the BCD value to the reader module the command SetBCD is used.

10.5.5 HITAG ANTENNA TUNING DEVICE Especially for the HITAG product line the HITAG antenna

tuning device HTOT840 was designed. This tuning device can be used for tuning long range and proximity antennas.

10.5.6 ANTENNA MALFUNCTION INDICATION If the antenna is broken or badly detuned, the antenna

overload bit is set. This bit can be read by the host system via the serial interface by using the command ReadLRStatus.

o(peak)

<10V.

HTRM800 family

10.5.7 ADDITIONAL REMARKS

The following list is a summary about HITAG long range antennas:

• Philips lays high emphasis on the research of antenna

development

• The choice of various antenna shapes (the electrical

parameters) is characteristic to 125 kHz systems

• The knowledge is transferred to Philips customers, in

ordertoenablethemtodesignandbuildantennas which fit best for the particular applications (antenna training)

• Solutions can be found for almost every environmental

scene (metal, periodic disturbers, special antenna shapes, etc.).

10.6 Antenna arrangements

Various arrangements are suitable for different applications (see Fig.6):

• The single loop antenna is used for standard

arrangements

• The gate antenna is used for typical access control

applications such as access control during passing through the gate

• The double gate antenna is similar to the gate using two

rows

• The antenna multiplex system is a cost efficient

application, because one reader module drives many antennas and the number of multiplexed antennas is only limited by timing restrictions.

By changing the arrangement of the antenna, the total system performance and reliability can be significantly improved. As an example: building gate antennas with opposite magnetic orientation leads to a very reliable system.

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handbook, full pagewidth

single loop antenna

double gate multiplex

Fig.6 Possible arrangements of antennas.

HTRM800

HTRM800HTRM800

gate antenna

HTRM800

antenna multiplex

HTRM800 family

MGU422

11 SURVEY OF REFERENCED DOCUMENTS

CATEGORY TITLE

Data sheet Application note

“HTCM400, HTRM440 Family, HTRM800 Family HITAG Interface Protocol Reader - Host” “Antenna Design for the HITAG Long Range System”

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hardware

12 DATA SHEET STATUS

PRODUCT

DATA SHEET STATUS

Objective data Development This data sheet contains data from the objective specification for product

Preliminary data Qualiﬁcation This data sheet contains data from the preliminary specification.

Product data Production This data sheet contains data from the product specification. Philips

Notes

1. Please consult the most recently issued data sheet before initiating or completing a design.

2. The product status of the device(s) described in this data sheet may have changed since this data sheet was published. The latest information is available on the Interned at URL tap://www.semiconductors.philips.com.

(1)

STATUS

(2)

development. Philips Semiconductors reserves the right to change the speciﬁcation in any manner without notice.

Supplementary data will be published at a later date. Philips Semiconductors reserves the right to change the speciﬁcation without notice, in order to improve the design and supply the best possible product.

Semiconductors reserves the right to make changes at any time in order to improve the design, manufacturing and supply. Changes will be communicated according to the Customer Product/Process Change Notiﬁcation (CPCN) procedure SNW-SQ-650A.

DEFINITIONS

13 DEFINITIONS Short-form specification  The data in a short-form

specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or data handbook.

Limiting values definition  Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 60134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device attheseorat any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information  Applications that are described herein for any of these products are for illustrative purposes only. Philips Semiconductors make norepresentationorwarrantythatsuchapplicationswillbe suitable for the specified use without further testing or modification.

14 DISCLAIMERS Life support applications  These products are not

designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury.Philips Semiconductorscustomersusingorsellingtheseproducts for use in such applications do so at their own risk and agree to fully indemnify Philips Semiconductors for any damages resulting from such application.

Right to make changes  Philips Semiconductors reserves the right to make changes, without notice, in the products, including circuits, standard cells, and/or software, described or contained herein in order to improve design and/or performance. Philips Semiconductors assumes no responsibility or liability for theuseofanyoftheseproducts,conveysnolicenceortitle under any patent, copyright, or mask work right to these products,andmakes no representations or warranties that these products are free from patent, copyright, or mask work right infringement, unless otherwise specified.

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HTRM800 family

NOTES

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Philips Semiconductors Product speciﬁcation

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HTRM800 family

NOTES

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Philips Semiconductors Product speciﬁcation

HITAG long range reader module hardware

HTRM800 family

NOTES

2001 Oct 04 19

Page 20

Philips Semiconductors – a w orldwide compan y

Contact information

For additional information please visit http://www.semiconductors.philips.com. Fax: +31 40 27 24825 For sales ofﬁces addresses send e-mail to: sales.addresses@www.semiconductors.philips.com.

The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights.

Printed in The Netherlands 613502/02/pp20 Date of release: 2001 Oct 04 Document order number: 9397 750 08331

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