A low phase noise VCO employing tunable stubs loaded nested split-ring resonator
- Publication Type:
- Conference Proceeding
- Citation:
- 2018 Australian Microwave Symposium, AMS 2018 - Conference Proceedings, 2018, 2018-January pp. 57 - 58
- Issue Date:
- 2018-04-24
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08346980 (1).pdf | Published version | 267.37 kB |
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© 2018 IEEE. In this paper, a low phase noise VCO employing tunable stubs loaded nested split-ring resonator (SLNSRR) has been proposed By loading anti-pair varactors at each side of the SLNSRR, the center frequency of the SLNSRR filter can be tuned from 1.82 GHz to 2.18 GHz. In the oscillator design, the tunable SLNSRR filter is used as a frequency stable element to select the oscillation frequency while keeping the low phase noise performance. To validate the method, an L-band to S-band VCO is designed, fabricated and measured. The measured results show that the proposed VCO has a frequency tuning range from 1.787 GHz to 2.117 GHz with a 16.9 % bandwidth. Over this frequency range, the phase noises measured at 1 MHz frequency offset are better than -113.49 dBc/Hz.
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