Model 7328H High Speed, High Dynamic Range I-Q Vector Modulator

Contact Us        Application Notes for Microwave Phase Shifter

The Model 7328H represents the latest advancement to Kratos General Microwave's comprehensive product line of PIN diode I-Q Vector Modulators. Its response time has been significantly reduced, resulting in an enhanced modulation rate performance of 50 MHz to better serve today's more demanding system applications.

In addition to the high speed, the Model 7328H incorporates multiple bi-phase modulator sections to provide in excess of 60 dB attenuation through 16 GHz, and is capable of a full 360 degrees of phase shift. Thus, the unit will provide high speed and simultaneous control of amplitude and phase over the full frequency range of 6 to 18 GHz. A simplified block diagram is shown in Fig. 1.

THEORY

The Theory of Operation of the Model 7328H is the same as the Series 73 units. The RF and Driver portions of the IQ Modulator have been modified to enable modulation rates up to 50 MHz.

  • High Speed - Modulation Rate of better than 50 MHz
  • Wide Frequency Range - 6 to l8 GHz
  • Simultaneous control of amplitude and phase over a 60dB dynamic range
  • Digitally Programmable I&Q - 12 Bit ECL control
  • Guaranteed monotonicity

High dynamic range  IQ vector modulator model 7328H

Series 7328H IQ vector modulator block diagram

   

PERFORMANCE CHARACTERISTICS

PARAMETER SPECIFICATION
Frequency Range, min ....................... 6.0 to 18.0 GHz
Insertion Loss, max...............................

6 to 10 GHz     18.5 dB

10 to 12 GHz   20 dB

12 to 18 GHz   27 dB

VSWR, max.........................................

6 to 10 GHz     2.2:1

10 to 18 GHz   2.6:1

Power Handling, max  
  Without Performance Degradation... -5 dBm typical
  Survival.......................................... +27dBm
Absolute Insertion Phase Accuracy
  vs Frequency......................................

6 to 12 GHz   ±25°
12 to 18 GHz  ±35°
Variation of Phase vs Temperature,
  max..................................................

±0.2°/°C
Attenuation Range, min  
  6 to 16 GHz................................... 60 dB
  >16 to 18 GHz............................... 50 dB
Variation of Amplitude vs
  Temperature, max............................

0.04 dB/°C
Modulation Rate, min.......................... 50 MHz
Control Input....................................... 12 Bit ECL for both I&Q
Control Characteristics, I&Q, typ......... See Figure 2
Control Input Impedance..................... 100 ohms (to-2V supply)
 Power Supply.........................................



+12V @ 350 mA
-12V @ 130 mA
-5.2V @ 340 mA
-2V @ 280 mA
AVAILABLE OPTIONS
Option No.
Description
G09
Guaranteed to meet Environmental
Ratings
G12
RoHS Compliant
G16   RoHS Plus REACH Compliant
Typical IQ control characteristics for Model 7328H vector modulator

 

 

 

 

Model 7328H IQ vector modulator dimensions and weights
 weight 8.8oz (249gr.) approximate
Dimensional Tolerances, unless otherwise indicated: .XX±.02; .XXX±.005