access icon free Low phase noise oscillator based on complementary split-ring resonators loaded quarter-mode circular SIW cavity

A high Q-factor substrate integrated waveguide (SIW) cavity resonator and its application of X-band low phase noise oscillator is proposed. Complementary split-ring resonators are used to improve the Q-factor of the proposed resonator. The size of the resonator is reduced by using quarter-mode circular SIW cavity. The oscillator based on the proposed SIW cavity resonator can be easily designed and tested. Measured results demonstrate an output frequency of 10.11 GHz and a phase noise of −108.7 dBc/Hz at 100 kHz offset. The oscillator is also able to deliver an output power of 4.6 dBm and harmonic rejection of better than 30 dBc. The proposed oscillator is suitable for low-cost high-frequency systems.

Inspec keywords: Q-factor; substrate integrated waveguides; microwave oscillators; cavity resonators; phase noise

Other keywords: frequency 100 kHz; Q-factor substrate integrated waveguide; quarter-mode circular SIW cavity; cavity resonator; frequency 10.11 GHz; complementary split-ring resonators loaded quarter-mode circular SIW cavity; harmonic rejection; X-band low phase noise oscillator

Subjects: Waveguides and microwave transmission lines; Waveguide and microwave transmission line components; Oscillators

References

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      • 8. Park, W.-Y., Lim, S.: ‘A low phase-noise microwave oscillator using a substrate integrated waveguide resonator based on complementary split ring resonator’. Asia-Pacific Microwave Conf., Sydney, Australia, December 2011, pp. 371374.
http://iet.metastore.ingenta.com/content/journals/10.1049/el.2017.1829
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