Test & Measurement

Waveguide Gunn oscillator can be tuned up to +/-1.0GHz

22nd February 2017
Mick Elliott

A waveguide Gunn oscillator from Fairview Microwave offers a cost-effective source for microwave power with excellent frequency and power stability while generating low-phase-noise. Typical applications include transmit and receive oscillators for radio communications, local oscillator source that can be multiplied for higher mm-wave frequency test and measurement, military and commercial radar sources, police radar, Doppler sensors and security screening.

Fairview Microwave’s model FMWGN1001 is a K-Band waveguide Gunn oscillator module that generates a centre frequency of 24.125GHz and can be tuned up to +/- 1.0GHz via a self-locking tuning screw.  

Because of the extremely high external Q and temperature compensation mechanism, this design exhibits higher frequency and power stability, lower phase-noise and higher anti-load-pulling characteristics.  

Performance specs include phase noise of -95dBc/Hz typical at 100KHz offset, and frequency stability of -0.4MHz/°C maximum.  

The output power of this oscillator is +10 dBm minimum with power stability of -0.04dB/°C maximum.  

Bias supply is +5Vdc at 200mA typical with an operating temperature range of -40°C to +85°C.  The design of this oscillator from Fairview utilizes high performance components in a rugged and compact aluminum package with a precision machined internal cavity design.  

The output frequency port supports a WR-42 UG-595/U waveguide flange interface.       “Our FMWGN1001 Gunn oscillator module offers designers a cost-effective and high performing K-Band waveguide frequency source solution for use with sensitive communications, radar and test and measurement applications,” explains Randy Leenerts, Senior RF Engineer at Fairview Microwave.

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