一种18-21 GHz InP DHBT线性微波多尔蒂放大器

2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Digest of Papers (Cat. No.00CH37096) Pub Date : 2000-06-10 DOI:10.1109/RFIC.2000.854443

K. Kobayashi, A. Oki, A. Gutierrez-Aitken, P. Chin, Li Yang, E. Kaneshiro, P. Grossman, K. Sato, T. Block, H. Yen, D. Streit

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引用次数: 27

摘要

这项工作描述了在k波段的InP DHBT MMIC多尔蒂放大器的首次演示。当与InP dhbt结合使用时，Doherty放大器在严格的C/IM3线性比为30 dBc的情况下实现了20%的线性PAE，同时产生20.1 dBm的输出。在相同的C/IM3线性度下，与ku波段的PHEMT MMIC Doherty放大器相比，该基准输出提高了3 dB，线性PAE提高了4%。与其自身的线性“A类”偏置性能相比，Doherty放大器在相同的输出端和略高的效率下实现了C/IM3的11 dB改进。InP DHBT Doherty放大器的优越线性度对卫星和毫米波通信系统具有吸引力。

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An 18-21 GHz InP DHBT linear microwave Doherty amplifier

This work describes the first demonstration of an InP DHBT MMIC Doherty amplifier at K-band. When combined with InP DHBTs, the Doherty amplifier achieves a record linear PAE of 20% under a strict C/IM3 linearity ratio of 30 dBc while producing a Pout of 20.1 dBm. This benchmarks 3 dB greater Pout and 4% higher linear PAE than achieved with a PHEMT MMIC Doherty amplifier at Ku-band for the same C/IM3 linearity. Compared to its own linear "class A" bias performance, the Doherty amplifier achieves an 11 dB improvement in C/IM3 for the same Pout and slightly greater efficiency. The superior linearity of the InP DHBT Doherty amplifier approach is attractive for satellite and MM-wave communication systems.

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2000 IEEE Radio Frequency Integrated Circuits (RFIC) Symposium Digest of Papers (Cat. No.00CH37096)

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