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Quad-band inverse class-F power amplifier using novel composite right/left-handed transmission line

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7 Author(s)
Jaewon Choi ; Wireless Commun. RF Syst. Lab., Soongsil Univ., Seoul, South Korea ; Seungin Yang ; Yong Moon ; Changkun Park
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In this paper, a quad-band inverse class-F power amplifier using the novel composite right/left-handed (CRLH) transmission lines (TLs) is developing covering 700 MHz, 800 MHz, 1800 MHz, and 2140 MHz. The novel CRLH TL metamaterials with two left-handed (LH) (backward) and two right-handed (RH) (forward) pass bands are used for quad-band operation. The second- and third-harmonics for four bands are located on open and short impedances for high-efficiency inverse class-F power amplifier. With the inverse class-F output matching network based on the quad-band harmonic control circuits, the measured maximum power-added efficiency (PAE) of the proposed quad-band inverse class-F power amplifier is 58.2%, 50.3%, 48.6%, and 56.6% for an output power of 41.5 dBm, 39.7 dBm, 37.7 dBm, and 40.7 dBm at 700 MHz, 800 MHz, 1800 MHz, and 2140 MHz, respectively.

Published in:

Microwave Symposium Digest (MTT), 2010 IEEE MTT-S International

Date of Conference:

23-28 May 2010

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