A miniature 44% efficiency GaAsHBT power amplifier MMIC for the W-CDMA application

被引：25

作者：

Kawamura, H ^{[1
]}

Sakuno, K ^{[1
]}

Hasegawa, T ^{[1
]}

Hasegawa, M ^{[1
]}

Koh, H ^{[1
]}

Sato, H ^{[1
]}

机构：

[1] Sharp Corp, Adv Technol Res Labs, Nara 6328567, Japan

来源：

GAAS IC SYMPOSIUM - 22ND ANNUAL, TECHNICAL DIGEST 2000 | 2000年

关键词：

D O I：

10.1109/GAAS.2000.906265

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper presents a new linearizing circuit, which gives high power-added efficiency with low distortion for the W-CDMA application. Since this linearizing circuit is realized by adding a small transistor, a resistor and a capacitor to the bias circuit, the required chip size is small enough and no extra loss in the signal path occurs. The designed 1.95 GHz two-stage power amplifier using HBTs shows 44% power-added-efficiency (PAE), 27.6 dBm output power and 21 dB gain with -37 dBc adjacent channel leakage power ratio (ACLR), at a supply voltage of 3.4 V. In contrast, the conventional power amplifier without linearizer shows 3 dB degradation in ACLR under the same conditions described above. Also, the chip size, which directly affects cost, is less than 1 mm(2).

引用

页码：25 / 28

页数：4