X-Band Feedback Type Miniaturized Oscillator Design with Low Phase Noise Based on Eighth Mode SIW Bandpass Filter

Samundra K. Thapa, Baichuan Chen, Adel Barakat, Kuniaki Yoshitomi, Ramesh K. Pokharel

Research output: Contribution to journalArticlepeer-review

Abstract

A standard Substrate Integrated Waveguide (SIW) based bandpass filter (BPF) suffers from bulkiness that limits its application in the implementation of compact size low phase noise oscillator. Instead, in this paper, an eighth mode SIW (EMSIW) resonator based BPF is utilized to realize a miniaturized low phase noise oscillator for X-band applications. Additionally, an equivalent circuit model of EMSIW-BPF is presented. A compact feedback type oscillator prototype using EMSIW-BPF is designed and fabricated for the first time with a circuit area of just only 1092 mm2. The experimental results of the prototype show a phase noise of -126.13 dBc/Hz at 1 MHz offset from 9.97 GHz oscillation frequency with an output power of 3.17 dBm.

Original languageEnglish
JournalIEEE Microwave and Wireless Components Letters
DOIs
Publication statusAccepted/In press - 2021

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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