A LOW-NOISE BAND PASS FILTER USING AN X-BAND INJECTION-LOCKED GUNN OSCILLATOR

Prosenjit Bhattacharyya, Santosh K. Dawn, Taraprasad Chattopadhyay

Abstract: In this paper, we report the design and implementation of a low-noise, tunable, active microwave band pass filter (BPF) which incorporates an injection-locked Gunn oscillator. The BPF has a centre frequency of 10.30 GHz and a 3-dB bandwidth of 52 MHz. Calculation shows that this active BPF can reduce the input signal AM noise by at least 38 dB. This BPF possesses signal amplification as well as signal tracking property.

Keywords: Injection-locking, Bandpass filter, X-band, Gunn oscillator, Amplitude noise

DOI: https://doi.org/10.15623/ijret.2016.0501005