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A Sub-Harmonic RF Transmitter Architecture with Simultaneous Power Combination and LO Leakage Cancellation

Bongsub SONG, Dohyung KIM, Kwangsoo KIM, Jinwook BURM

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Summary :

A sub-harmonic RF transmitter architecture with simultaneous power combination and carrier-leakage cancellation is proposed. It employs an 8-phase ring-type voltage controlled oscillator (VCO), sub-harmonic mixers, driver amplifiers, and a balun. A signal power is combined with its 180° phase-shifted signal through the balun. Simultaneously carrier-leakage generating in sub-harmonic mixers is canceled by its phase difference. The proposed transmitter achieved 1 dBm 1-dB output compression point (P-1dB) under 1.8 V supply and -40 dBm carrier-leakage in 5 GHz band.

Publication
IEICE TRANSACTIONS on Electronics Vol.E94-C No.5 pp.858-861
Publication Date
2011/05/01
Publicized
Online ISSN
1745-1353
DOI
10.1587/transele.E94.C.858
Type of Manuscript
BRIEF PAPER
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