A Tunable Wideband Frequency Synthesizer Using LC-VCO and Mixer for Reconfigurable Radio Transceivers | Zendy

Yusaku Ito | Zendy; Kenichi Okada | Zendy; Kazuya Masu | Zendy

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A Tunable Wideband Frequency Synthesizer Using LC-VCO and Mixer for Reconfigurable Radio Transceivers

Author(s) -

Yusaku Ito,

Kenichi Okada,

Kazuya Masu

Publication year - 2011

Publication title -

journal of electrical and computer engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 25

eISSN - 2090-0155

pISSN - 2090-0147

DOI - 10.1155/2011/361910

Subject(s) - voltage controlled oscillator , dbc , wideband , transceiver , frequency synthesizer , phase noise , cmos , electronic engineering , electrical engineering , lc circuit , voltage , materials science , engineering , phase locked loop , capacitor

This paper proposes a novel wideband LC-based voltage-controlled oscillator (VCO) for multistandard transceivers. The proposed VCO has a core LC-VCO and a tuning-range extension circuit, which consists of switches, a mixer, dividers, and variable gain combiners with a spurious rejection technique. The experimental results exhibit 0.98 to 6.6 GHz continuous frequency tuning with −206 dBc/Hz of FoMT, which is fabricated by using a 0.18 μm CMOS process. The frequency tuning range (FTR) is 149%, and the chip area is 800 μm × 540 μm

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