P
HASE
S
HIFTER
/ S
WITCH
M
ODULE
F
OR
E
LECTRONIC
TACAN A
NTENNA
T
YPICAL
S
PECIFICATIONS
960 - 1225 MHz
500W peak, 20W average, 5µsec Pulse Width
50 Ohm nom., open/short at full power, all
phases - no damage
Insertion Loss
4.5 dB max.
VSWR
2:1 max., 1.5:1 average
Phase Steps
22.5
°
Phase Error
±
10
°
peak, 7
°
RMS
Phase Tracking, Channel to Channel
within
±
10
°
at 0
°
phase setting
Transfer Switch Isolation
40 dB min.
Control
TTL, 4 lines per phase shifter, 1 line per switch
Switching Time, 50% TTL, 90/10% RF 300 nsec. typ., 400 nsec. max.
Switching Mode
Cold (between RF pulses)
DC Power (V+/-10%)
+5V/1.75 A, -50V/180 mA
Power Supply Protection
Slow-blow fuses
BITE
Monitors PIN diodes, driver operation and supply voltages
BITE Output
single TTL line
Operating Temperature
-55
°
to +85
°
C (air and mounting plate temperature)
Humidity
to 100%
RF Connectors
TNC (F)
DC and Control
CGK 32 pin miniature circular or equivalent
Dimensions
8.67” W x 10.8” L x 6.7” H
Weight
9 lbs.
Part Number
RFS0912-S2
Frequency Range
RF Input Power (J1, J2 & J3)
Load Impedance
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D
ESCRIPTION
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This module has three RF
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inputs of 500 Watt peak and
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20 Watt average power. Each
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of the three channels contain
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a 4-bit digital phase shifter
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and the phase shifters’outputs
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feed two transfer switches, as
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shown in the circuit diagram.
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The module includes all necessary
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PIN diode drivers for the
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phase bits and switches, as
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well as BITE circuitry, which
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monitors all PIN diodes, drivers
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and DC supply voltages, and
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gives a TTL “fault”indication
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if any parameters are out-of-
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range.
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A
PPLICATIONS
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Multi-sector array antenna
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for TACAN transmitters
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MICRONETICS [ MICRONETICS, INC. ]
