Wireless Innovations Group
2601 Telecom Parkway
Richardson, Texas 75082
400/800 MHz Fiber Optic & RF Fed Bi-Directional
Amplifier Operations / Maintenance Manual
DWG NO:
AE04B-A1669
Rev: B
Date
: 06/18/2008
Page
:
26
of 63
5.2 480 MHz High Isolation Duplexer (AE04A-D1442-001)
5.2.1 Description
The 480 MHz, high isolation duplexer provides the high bandpass selectivity and
isolation for the Uplink and the Downlink frequency. The duplexer is based on a
5-cavity cross-coupled bandpass filter design and is aligned carefully during
production to optimise the insertion loss, selectivity, and VSWR
The duplexer is a fully passive device and should have an extremely long trouble-
free working life and requires no maintenance. Should the duplexer be suspect of
failure, the entire duplexer module should be replaced.
5.2.2
Specification
PARAMETER
SPECIFICATION
Frequency Range: Downlink
Uplink
483.1375 – 483.2625 MHz
486.1375 – 486.2625 MHz
Passband Insertion Loss
3.5 dB
Passband VSWR
< 1.2:1
Impedance
50 Ohms
Power Handling
10 Watt
Downlink-To-Uplink Isolation
> 96 dB @ Receive Port
Uplink-To-Downlink Isolation
> 96 dB @ Transmit Port
Operating Temperature
-20
°
C to +60
°
C
