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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...
A high-efficiency power amplifier using novel harmonic control circuit is realised with lateral depletion MOSFET. The proposed harmonic control circuit that is used to design input/output matching network has short impedance for second- and third-harmonics, and is superior to the class-F or inverse class-F harmonic control circuit. It is also shown that the maximum power-added efficiency of the proposed...
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