Efficiency enhancement of cross cancellation power amplifier using negative group delay circuit | Zendy

Joeng Junhyung | Zendy; Chaudhary Girdhari | Zendy; Jeong Yongchae | Zendy

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Efficiency enhancement of cross cancellation power amplifier using negative group delay circuit

Author(s) -

Joeng Junhyung,

Chaudhary Girdhari,

Jeong Yongchae

Publication year - 2019

Publication title -

microwave and optical technology letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.304

H-Index - 76

eISSN - 1098-2760

pISSN - 0895-2477

DOI - 10.1002/mop.31765

Subject(s) - amplifier , group delay and phase delay , electrical engineering , electronic engineering , ccpa , power (physics) , engineering , cmos , physics , chemistry , adenosine receptor , biochemistry , receptor , filter (signal processing) , quantum mechanics , agonist

In this article, a cross cancellation power amplifier (CCPA) with negative group delay circuits (NGDCs) for an efficiency enhancement is proposed. The proposed CCPA with NGDCs consists of a balanced power amplifier (BPA), NGDCs, error amplifier, small signal amplifier, and magnitude/phase control circuits. The NGDC can remove delay elements of the conventional CCPA and improve output power and efficiency. The fabricated main BPA provides 44.37 dBm peak power, 71.3% drain efficiency, and 68% PAE at 2.14 GHz. The drain efficiency of the proposed CCPA with NGDCs is improved by 6.7% than the conventional CCPA. Moreover, adjacent channel leakage ratios of CCPA with NGDCs are improved by 12.2, 18.9, 17.7, and 14.2 dB at −10, −5, +5, and +10 MHz offset points with the WCDMA 4‐FAs (20 MHz) signal, respectively.

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