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http://dx.doi.org/10.5515/KJKIEES.2018.29.11.842

A 5-GHz Oscillator Using Frequency-Locked Loop with a Single Resonator  

Lee, Chang-Dae (Hanwha Systems)
Lee, Dong-Hyun (Department of Radio Science and Engineering, Chungnam National University)
Lee, Chang-Hwan (Department of Radio Science and Engineering, Chungnam National University)
Yeom, Kyung-Whan (Department of Radio Science and Engineering, Chungnam National University)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.11, 2018 , pp. 842-850 More about this Journal
Abstract
In this paper, the design and fabrication of a frequency-locked-loop(FLL) 5-GHz oscillator with a single resonator is presented. The proposed oscillator is the simplified version of the previous FLL oscillator with two separate resonators in the VCO and frequency detector. The resonator is commonly used in the VCO and frequency detector of the proposed oscillator configuration. The 5-GHz oscillator is implemented on the hetero-multilayer substrate composed of a Rogers' RO4350B laminate, which has excellent high-frequency performance, and the commercial FR4 three-layer substrate. The frequency locking occurs at approximately 5 GHz and has an output power of 3.8 dBm. The phase noise has a free-run VCO phase noise at frequencies above 1 kHz, and an FLL background noise at frequencies below 1 kHz. For this loop-filter, the phase noise showed an improvement of approximately 12 dB at the offset-frequency of 100 Hz.
Keywords
Frequency Locked Loop; Phase-Locked Loop; Frequency Detector; Resonator; Phase Detector;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
연도 인용수 순위
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