GT Microwave
Ph. :   973-361-5700
Fax :   973-361-5722
Email :   sales@gtmicrowave.com
Home      About Us     Request for Quote     Representatives     Contact Us     Email this Page     Site Map  
Home Home  
Vector Modulators Vector Modulators  
Frequency Translator Vector Modulators  
Pulse Modulators Pulse Modulators  
BPSK Modulators BPSK Modulators  
QPSK Modulators QPSK Modulators  
Custom Devices Custom Devices  
Attenuators Attenuators  
Switches Switches  
Phase Shifters Phase Shifters  
Custom Sub-Assembly Custom Sub Assembly  
Featured Products Featured Products  

  Frequency Serrodyning Phase Shifter

G.T. Microwave Features:

Frequency Ranges: From 500 MHz to 24 GHz any optimized bandwidth is available.

TTL Compatible Logic: G.T.M.I.'s binary logic Digital to Analog Converter with 8 inputs; Logic '1'/BIT = 256 discrete phase shifts with a 1.4 degree Resolution (L.S.B.) or all Logic '0' = 0 degrees Reference state. Up to 12 BIT resolution available upon request.

Optional Models: Analog Voltage controlled models. Dual function models, selectable input for either translator or phase shifter operations.

High Speed Switching: Frequency Translators listed are measured from any set value to any value.

Translation Rate: From 0 to 500 kHz the Carrier Suppression is 25 dB and Sideband Suppression is 20 dB Minimum.

Low DC power Consumption: Frequency Translators require +/=12 to +/=15 VDC @ +/-100 mA.

Stable Phase Shifts: Variation vs Temperature from -55° to 85°C is typically ±0.2° /° C from set value. Temperature Compensated models are available upon request.

High RF Power Handling: For power levels greater than listed, please consult factory.

Standard Interfaces: RF Port connectors are ‘SMA’, female per MIL –C-39012.

Life Time Integrity: G.T.M.I.’s Frequency Translators are designed to meet MIL – E – 16400, Range 1 and MIL – E – 5400, Class 2 environments operating within the -55° to +85° C temperature range.

Click here to view Outline Diagram

POWER / LOGIC CONNECTIONS
No. of Bits Login Pin Assignments +15V
PIN
-15V
PIN
GND
PIN
8  L.S.B. @ 1 TO M.S.B. @ 8 13 14 15
ALL UN-USED PINS HAVE NO INTERNAL CONNECTIONS.
SIZE ‘A’DIM.
IN/CM

‘B’ DIM.
IN/CM

‘C’DIM.
IN/CM

‘D’ DIM.
IN/CM
1 4.95/12.57 3.38/8.58 4.750/12.065 3.125/7.938
2 3.25/8.26 3.25/8.26 3.050/7.747 3.000/7.620
3 3.00/7.62 3.00/7.62 2.800/7.112 2.750/6.985
4 4.25/10.80 3.50/8.89 3.250/8.255 3.250/8.255
Electrical Specifications for DIGITAL 360° FREQUENCY TRANSLATORS
G.T.M.I.’S Model Number FREQUENCY
RANGE
GHz
PHASE
ERROR Vs Freq.
MAX

Amplitude Translation Variation

INSERTION
LOSS
MAX
V.S.W.R
MAX
SWITCHING SPEED
nSEC MAX
RF Input POWER
+ dBm
CW / MAX
OutlineSize
T8P-39N-5 0.5-2.0 ±10.0°

1.0 dB to 200 kHz

or

3.0 dB to 500 kHz

13.0 dB 1.70:1 500 +10 +30 1
T8P -38N-5 1.0-3.0 +10 +30
T8P-48N-5 2.0-6.0 11.0dB 1.80:1 +15 +30 2
T8P-68N-5 6.0-18.0 12.0dB 1.90:1 +15 +30 3
T8P-84N-5 16.0-24.0 ±15.0° 16.0dB 2.20:1 +15 +30 4
T8P-69N-5 2.0-18.0 ±22.0° 16.0dB 2.20:1 +15 +30 4

Frequency Serrodyning:
G.T.Microwave's Digital Frequency Translators/phase shifters are used for changing the fundamental frequency of incoming signals. Frequency Serrodyning operation is employed by the velocity deception Electronic Countermeasures jammer to counter those radars utilizing a target's doppler shift information. The Electronic Countermeasures jammer will frequency translate an incoming signal by a desired amount and at a specific rate during retransmission. If the radar follows the Electronic Countermeasures signal, it is left without a target in its velocity gate when the Electronic Countermeasures signal is turned off. The operation can be accomplished by a Digital Phase Shifter/ Digital Frequency Translator.

PM/AM Error is the maximum change from crest-to-crest in insertion loss of the phase shifter as the phase is rotated over a 360-degree phase range. The amplitude change (AM) being a function of the phase change (PM).
PM Error: 0-200 KHz, 1 dB
AM Error: 200-500 KHz, 3 dB

Phase Nonlinearity is the lack of direct proportionality to the ratio of phase shift to frequency over a specified frequency range, which can be calculated through the deviation of the linear phase shift and time.
Phase Nonlinearity: 5 degrees

Although Quantization Error is insignificant at a phase resolution greater than 6 BITs, it appears in a digital phase shifter, which only estimates the linear phase shift with isolated phase steps.

Flyback Time is the limited time allocated by the phase shifter to go back from 360 to 0 degrees.
Flyback Time: <1% of the translation rate.

For substantial improvement in performance; ask for OPTIMIZED NARROWBAND models.

G.T. Microwave Inc. 1-973-361-5700 fax: 1-973-361-5722