 Application Notes for Microwave Phase Shifter
The Model 7328H represents the latest advancement to 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 MH
- 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
|
| | | PRELIMINARY PERFORMANCE CHARACTERISTICS | PARAMETER | SPECIFICATION | | Frequency Range, min ....................... | 6.0 to 18.0 GHz | | Insertion Loss, max............................... | 6 to 10 GHz 15.0 dB 10 to 12 GHz 16 dB 12 to 18 GHz 20 dB | | VSWR, max......................................... | 6 to 10 GHz 2.0:1 10 to 18 GHz 2.5:1 | | Power Handling, max | | | Without Performance Degradation... | -5 dBm typical | | Survival.......................................... | +27dBm | Absolute Insertion Phase Accuracy
vs Frequency...................................... |
±15° | 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 |
|  | | | 
weight 8.8oz (249gr.) approximate
Dimensional Tolerances, unless otherwise indicated: .XX±.02; .XXX±.005 |
Herley - General Microwave specializes in developing and producing customized microwave components and millimeter wave products for the defense and aerospace industries as well as for non-defense applications such as communication systems. Herley General Microwave produces the industry standard General Microwave line of off-the-shelf catalog RF components. If you are looking for a solid state power amplifier, microwave synthesizer or other microwave oscillators, microwave receiver, microwave switches, microwave attenuator, microwave limiter, microwave phase shifter, or microwave IQ vector modulator; we can produce components meeting your requirements at a very competitive price. We also produce high quality customized integrated microwave assemblies such as up and down converters, DLVAs, beam forming networks, front ends, or switched bank filters, that can be used in a wide variety of demanding applications. Herley General Microwave (HGMI), a subsidiary of Herley Industries provides solutions for electronic warfare systems, phased array radar systems, electronic warfare simulators, test equipment and test systems and other defense and non-defense systems. We look forward to working with you, so please contact us today. |
