u blox EMMYW163 Users Manual

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Topic :

EMMY-W1 Antenna reference design

Doc.No:

UBX-16015910

Revision

R01 Date:

Name

Signature

Created

01-Jul-2016

Stefano Bianconi

sbia

Checked

Released

Model

FCC ID

IC ID

EMMY-W161

XPYEMMYW161

8595A-EMMYW161

EMMY-W163

XPYEMMYW163

8595A-EMMYW163

EMMY-W1 Antenna reference design

We reserve all rights in this document and in the information contained therein. Reproduction, use or disclosure to third parties without express authority is strictly forbidden. © 2016 u-blox AG

1 Scope

This document defines the essential specifications necessary to implement the EMMY-W1 antenna reference
designs. The information contained herein and its references should be sufficient to guide a skilled person in an
attempt to implement the design on a host carrier. It will provide the designer with PCB layout details and
expected performance specifications.

The document supports the four different PCB designs for Wi-Fi:

 Two connector-based designs for the use of external antennas (one for each antenna pin of the module)
 Two designs based on SMD antennas (one for each antenna pin of the module)

This document also supports general guidelines for the design of the NFC interface.

2 FCC/IC ID reference

Table 1: FCC and IC IDs for different models of EMMY-W1 series

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Reference

Description

1

Host carrier PCB (light green)

2

Antenna reference design (dark green)

2

1

3 General description

When using the EMMY-W1 together with this antenna reference design, the circuit trace layout must be made
in strict compliance with the instructions below.

All the components placed on each RF trace must be kept as indicated in the reference design, even if not used.
The PCB areas of unused reference designs must be flooded with ground.

Figure 1: Antenna Reference design embedded in a host carrier PCB

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Reference

Description

3

SMD antenna

4

Antenna impedance matching network

5

Connectors for external antenna

6

Antenna coplanar microstrip, matched to 50 Ω

7

Top layer GND-plane

8

Antenna impedance matching network

9

SMD antenna

10

ELLA-W1 module

3 6 10

4

5

9

7

8

3.1 Floor plan and PCB stack-up

This section describes where the critical components are positioned on the reference design. It also presents the
stack-up of the four layers of the PCB.

Figure 2: EMMY-W1 antenna reference design

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PCB Layer

Material

Thickness

Soldermask Top

Generic LPI Soldermask

25 µm

Top

Copper Foil

35 µm

Dielectric

Pre-preg 2x7628

360 µm

L2

Copper Foil

35 µm

Dielectric

Core

700 µm +/-10%

L3

Copper Foil

35 µm

Dielectric

Pre-preg 2x7628

360 µm

Bottom

Copper Foil

35 µm

Soldermask Bottom

Generic LPI Soldermask

25 µm

Item

Value

S

400 µm

W

600 µm

T

35 µm

H

360 µm

3.2 PCB stack-up

The stack-up used in the reference design is specified in Table 2.

Table 2: Stack-up of EVK-EMMY-W1

3.2.1 RF trace specification

The 50 Ω coplanar micro-strip dimensions used in these reference designs are stated in Figure 3 and Table 3.

Figure 3: Coplanar micro-strip dimension specification

Table 3: Coplanar micro-strip specification

3.3 Mechanical dimensions

The Mechanical dimensions and position of the components are specified in Figure 4.

The layers beneath the ‘top layer’ have the same dimensions and are filled with ground. No RF traces are routed
in those layers.

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Figure 4: Mechanical dimensions of EVK-EMMY-W1, top layer

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Reference
designator

Description

Manufacturer

P/N

A1

Antenna CHIP 2.45 & 5 GHz

Antenova

A10194

L1

IND, Multilayer Ceramic, 10nH, +/-5%, 300mA, SMD 0402

Johanson Technology

L-07C10NJV6ST

L2

IND, Multilayer Ceramic, 1nH, +/-0.3nH, 300mA, SMD 0402

Johanson Technology

L-07C1N0SV6T

C2

CAP, CER, 0.2pF, +/-0.1pF, C0G, 50V, SMD 0402

Johanson Technology

500R07S0R2BV4

R1

0 Ω resistor, 0402

Generic

-

R2

Do not Assembly

- - J7

Do Not Assembly

-

-

Parameter

Low band

High band

Unit

Frequency Range

2.4 – 2.5

4.9 – 5.875

GHz

Peak Gain

1.8

4.1

dBi

VSWR

< 1.4:1

< 1.8:1

-

Efficiency

>75

>60 % Polarisation

Linear

-

Radiation pattern

Omnidirectional

-

Temperature range

-40 to +85

°C

Impedance

50

Ω

Dimension

(L x W x H)

10.0 x 10.0 x 0.9

mm

4 Reference designs for antenna pin 1

This section describes the available designs for the antenna pin 1 of the EMMY-W1 modules.

Figure 5: Reference schematic for antenna pin 1

4.1 Internal antenna

The reference design with internal antenna uses the SMD Antenova type A10194 dual band antenna that is
connected to the module RF-port via a coplanar micro-strip transmission line.

4.1.1 Bill of materials

4.1.2 Antenna characteristics

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Reference
designator

Description

Manufacturer

P/N

A1

Do Not Assembly

- - L1

Do Not Assembly

- - L2

Do Not Assembly

- - C2

Do Not Assembly

-

-

R1

Do Not Assembly

-

-

R2

0 Ω resistor, 0402

Generic

-

J7

Coaxial Connector, 0 – 6 GHz, SMD

Hirose

U.FL-R-SMT-1(10)

4.2 External antenna

The reference design with external antenna uses the micro coaxial connector that is connected to the external
antenna via a 50 Ω pigtail. See section 6 for a list of available external antennas.

4.2.1 Bill of materials

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Reference
designator

Description

Manufacturer

P/N

A2

Antenna CHIP 2.4-2.5GHz

Johanson Technology

2450AT45A100

C3

CAP, CER, 2.2pF, +/-0.1pF, C0G, 50V, SMD 0402

Johanson Technology

500R07S2R2BV4

C4

CAP, CER, 1.8pF, +/-0.1pF, C0G, 50V, SMD 0402

Johanson Technology

500R07S1R8BV4

L3

IND, Multilayer Ceramic, 3.9nH, +/-0.3nH, 300mA, SMD 0402

Johanson Technology

L-07C3N9SV6T

R9

0 Ω resistor, 0402

Generic

-

R10

Do not Assembly

-

-

J8

Do Not Assembly

-

-

Parameter

Low band

Unit

Frequency Range

2.4 – 2.5

GHz

Peak Gain

2.2

dBi

VSWR

< 2:1

-

Polarisation

Linear

-

Radiation pattern

Omnidirectional

-

Temperature range

-40 to +125

°C

Impedance

50

Ω

Dimension

(L x W x H)

9.5 x 2.0 x 1.2

mm

5 Reference designs for antenna pin 2

This section describes the available designs for the antenna pin 2 of the EMMY-W1 modules.

Figure 6: Reference schematic for antenna pin 2

5.1 Internal antenna

The reference design with internal antenna uses the SMD Johanson Technology type 2450AT45A100 antenna
that is connected to the module RF-port via a coplanar micro-strip transmission line.

5.1.1 Bill of materials

5.1.2 Antenna characteristics

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Reference
designator

Description

Manufacturer

P/N

A2

Do not Assembly

- - C3

Do Not Assembly

- - C4

Do not Assembly

- - L3

Do not Assembly

-

-

R9

Do Not Assembly

-

-

R10

0 Ω resistor, 0402

Generic

-

J8

Coaxial Connector, 0 – 6 GHz, SMD

Hirose

U.FL-R-SMT-1(10)

5.2 External antenna

The reference design with external antenna uses the micro coaxial connector that is connected to the external
antenna via a 50 Ω pigtail. See section 6 for a list of available external antennas.

5.2.1 Bill of materials

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Model name

Manufacturer and description

Gain [dBi] (peak)

ANT-2.4-CW-RCT-RP

Linx, Single-band dipole antenna

2.2 @ 2.4GHz band

N/A @ 5GHz band

ANT-2.4-CW-RH

Linx, Single-band monopole antenna

-0.9

GW.26.0151

Taoglas, Single-band dipole antenna

0.0

Model name

Manufacturer and description

Gain [dBi] (peak)

ANT-DB1-RAF-RPS

Linx, Dual-band dipole antenna

2.5 @ 2.4GHz band

4.6 @ 5GHz band

GW.40.2153

Taoglas, Dual-band dipole antenna

3.74 @ 2.4GHz band

2.5 @ 5GHz band

GW.59.3153

Taoglas, Dual-band dipole antenna

2.37 @ 2.4GHz band

2.93 @ 5GHz band

RFDPA870900SBLB8G1

Walsin, Dual-band dipole antenna

2 @ 2.4GHz band

3 @ 5GHz band

88395

Delock, Dual-band dipole antenna

1.5 @ 2.4GHz band

2.1 @ 5GHz band

6 Approved external antenna list

For Bluetooth operation on EMMY-W163, the module has been tested and approved for use with antennas
listed in Table 4.

Table 4: Approved antennas list, single-band operation

For Bluetooth and Wi-Fi operations in the 2.4 GHz band and Wi-Fi operation in the 5 GHz band, the module has
been tested and approved for use with antennas listed in Table 5.

Table 5: Approved antennas list, dual-band operation

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Reference
designator

Description

Manufacturer

P/N

J6

Pin Header, Pitch 2.54mm, 1x4 Way, Through Hole

Samtec

TSW-104-07-G-S

C10

Do Not Place

-

-

C11

CAP, CER, 220pF, 5%, NP0, 50V, SMD 0402

Murata

GRM1555C1H221JA01

C12

CAP, CER, 820pF, 5%, NP0, 50V, SMD 0402

Murata

GRM1555C1H821JA01

C13

Do Not Place

-

-

C14

CAP, CER, 820pF, 5%, NP0, 50V, SMD 0402

Murata

GRM1555C1H821JA01

C15

Do Not Place

-

-

Parameter

Low band

Unit

Frequency Range

13.56

MHz

Number of turns

4 - Trace width

0.4

mm

Trace spacing (edge to edge)

0.4

mm

Dimensions (L x W)

30 x 30

mm

7 NFC reference design

This section describes the available design for the NFC coil antenna of the EMMY-W1 modules.

Figure 7: Reference schematic for NFC coil antenna

7.1 Internal antenna

The reference design uses a NFC coil antenna designed by u-blox.

7.1.1 Bill of materials

7.1.2 NFC coil characteristics

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Figure 8: EMMY-W1 reference coil antenna, mechanical dimensions

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