G Way Solutions BDALTEUC3390C Users Manual

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Installation

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OperatingManual

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LTE‐UpperCBand,Bi‐DirectionalAmplifier
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BDA‐LTE/UC‐33/33‐90‐C

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TABLE OF CONTENTS

PARAGRAPH PAGE NO

OVERVIEW 3
BLOCK DIAGRAM DESCRIPTION 3
BLOCK DIAGRAM DRAWING (Figure 1) 4
ELECTRICAL SPECIFICATIONS 5

MECHANICAL SPECIFICATIONS 6

ENVIRONMENTAL CONDITIONS 6

RF EXPOSURE WARNING 6

CONNECTIONS 7

MECHANICAL OUTLINE DRAWING (Figure 2 & 2a) 8

INSTALLATION 9

OPERATION 10

FRONT PANEL (Figure 3)

BACK PANEL (Figure 3a)

DIAGNOSTICS GUIDE 12

11

11

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OVERVIEW:

The BDA-LTE/UC-33/33-90-C assembly enhances the coverage area of radio
communications in buildings and RF shielded environments.

The BDA-LTE/UC-33/33-90-C has dual RF paths (Forward / Reverse) to improve
coverage in two distinct frequency bands.

The unit features low noise figure and wide dynamic range. It is based on a dual
duplexed path configuration with sharp out of band attenuation allowing improved
isolation between the receiving and transmitting paths.

BLOCK DIAGRAM DESCRIPTION:

Refer to Figure 1 for the following discussion.

The BDA-LTE/UC-33/33-90-C Downlink path receives RF signals from the base
station, amplifies the signal and transmits the signal into a Distributed Antenna
System at the direction of the mobiles. The signal travels over a DAS medium that
then dissipates the signal to the Mobile subscribers. The BDA-LTE/UC-33/33-90-C
Uplink path receives RF signals at the Mobile side from the DAS system, then
amplifies it, and transmits the amplified signal to the base station. The Uplink and
Downlink occupy two distinct dedicated frequency bands, each Uplink and Downlink
band is 11MHz wide.

For LTE Upper C Band, the frequency allocations are as follows:

Uplink: 776 - 787 MHz

Downlink: 746 – 757 MHz

Four diplexers isolate the paths and route each signal to the proper amplifying
channel.

An Automatic Level Control (ALC) allows for output power limiting. A variable step
attenuator gives 0 – 30 dB of attenuation in 2 dB steps. The use of these controls is
covered in the “OPERATION” section, later in this document.

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BLOCK DIAGRAM DRAWING:
(Figure 1)

1. Input Uplink Diplexer – has low bandpass insertion loss and high selectivity for one distinct
downlink/uplink frequency band.

2. Downlink Pre-amp’s – are low noise amplifiers that drive the Downlink PA’s and offer 45dB Gain.

3. Pre-Selector Filter - Downlink

4. Downlink PA’s – are power amplifiers with an ALC circuit which offer 50dB Gain.

5. Output Downlink Diplexer - has low bandpass insertion loss and high selectivity for one distinct
downlink/uplink frequency band.

6. Uplink Pre-amp’s – are low noise amplifiers that drive the Uplink LPA”s and offer 45dB Gain.

7. Pre-Selector Filter - Uplink

8. Uplink LPA’s – are power amplifiers with an ALC circuit which offer 50dB Gain.

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ELECTRICAL SPECIFICATIONS:

Frequency Range : UL 776 – 787 MHz

Pass band Gain @ min attenuation : 90 dB (Min.)

Variable Step Attenuator Range : 0-30 dB
(2-dB steps)

Pass band Ripple : ±2.0 dB (Typ.)
.
Noise Figure (Uplink) : 5.0 dB (Typ.)

@+25°C at max gain

3rd Order Intercept point

Downlink : +53 dBm (Typ.)

Uplink : +53 dBm (Typ.)

Output Power (Composite)*

Downlink : +33 dBm (Typ.)

Uplink : +33 dBm (Typ.)

Isolation between Up/Down Link : 100 dB (Min.)

Input/ Output Impedance : 50 Ohms

*SFDR : 120 dB/Hz

VSWR (Input/Output) : <1.5: 1

Power Supply : 110VAC/1.1 Amps

DL 746 – 757 MHz

2/3

: 220VAC/0.55 Amps
: 50 to 60 Hz

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