107 WOODMERE ROAD • FOLSOM, CA 95630
TEL: (1) 916 351-4500 • FAX (1) 916 351-4550
E-MAIL: nardawest@L-3COM.com • www.nardamicrowave.com
106
narda west
GSM BAND FILTERS / DUPLEXERS
For More Information Call:
(916) 351-4500
GSM Band Duplexer
•Passes Full GSM Band Rx / Tx
•High Isolation
•Low Insertion Loss
•Standard EIA Rack Mountable
•Optional Monitor Port
SPECIFICATIONS
MODEL NUMBER GFD-21A-8996-01
/ -02 (MONITOR PORT)
PASSBAND
RECEIVE
TRANSMIT
890 - 915 MHz
935 - 960 MHz
PASSBAND INSERTION LOSS 0.75 dB MAX
PASSBAND LOSS VARIATION 0.4 dB MAX
PASSBAND RETURN LOSS 14 dB MIN
REJECTION
ANTENNA TO RECEIVE DC - 768 MHz
TRANSMIT TO ANTENNA 1500 - 2700 MHz
65 dB MIN
65 dB MIN
ISOLATION
RECEIVE TO TRANSMIT
TRANSMIT TO RECEIVE
75 dB MIN
75 dB MIN
POWER HANDLING1
CW
PEAK
MULTI CARRIER2
400 W
600 W
8@10W
MONITOR PORT 50 ±5 dB (-02 ONLY)
OPERATING TEMP 0 TO +65°C
STORAGE TEMP -20 TO +85°C
CONNECTORS TYPE ‘N’ FEMALE
SIZE 19” x 2.49” x 2U
482.6 mm x 63.2 mm x 2U
NOTES:
1Power handling (max watts) includes
simultaneous conditions of antenna VSWR
£2:1, altitude £10,000 feet, and case
temperature of £+50°C.
2MULTIPLE CARRIER is defined as the
number of carriers, neach at SEPARATE
frequencies within the transmit passband
applied simultaneously at the power level,
pas indicated, completing the formula:
n2x p = Peak Power Handling.
DESCRIPTION
Narda’s GSM band Duplexers provide highly selective
receive / transmit combining. These duplexers are
designed to pass the full GSM receive and transmit bands
while providing more than 75 dB isolation. The units have
a 0.75 dB maximum passband insertion loss with 0.5 dB
typical. Specifically designed for high power applications,
power ratings are 400 watts CW, 600 watts peak, with
multi-carrier powers of 8 carriers at 10 watts each. An
optional monitor port which offers a -50 dB coupled
signal for power monitoring is available on the
GFD-21A-8289-02. This unit is provided with Type ‘N’
female connectors. 7/16 DIN connectors available as an
option (shown).
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