A LOW-NOISE BASEBAND 5-GHZ DIRECT-COUPLED HBT AMPLIFIER WITH COMMON-BASE ACTIVE INPUT MATCH

被引：14

作者：

KOBAYASHI, KW

OKI, AK

机构：

[1] TRW Electronic Systems and Technology Division, Redondo Beach, CA

来源：

IEEE MICROWAVE AND GUIDED WAVE LETTERS | 1994年 / 4卷 / 11期

关键词：

Common base active input match - Darlington feedback amplifier - Heterojunction bipolar transistor amplifier - Microstrip matching component - Microwave process;

D O I：

10.1109/75.329710

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 reports on an HBT direct-coupled 2-stage amplifier that uses active common-base input matching to provide multi-decade frequency performance from dc to 5 GHz. This work benchmarks the first reported HBT noise results of an HBT amplifier using common-base active input matching. The 2-stage amplifier consists of a common-base input stage that is directly coupled to a Darlington feedback amplifier output stage. The common-base input can be bias tuned to achieve > 13-dB return loss at 3 GHz and a minimum noise figure of 2.9 dB at 1 GHz. A gain of 17.5 dB with a 3-dB bandwidth greater than 5 GHz was achieved under low-noise input bias. This amplifier topology can be implemented without the use of a complex microstrip process, which typically integrates backside vias and microstrip matching components. The compact amplifier consumes an area of 0.82 x 0.47 mm2, which is 10 times smaller than a previously reported 2.5-4 GHz narrow-band passive matched HBT amplifier with similar noise and gain performance.

引用

页码：373 / 375

页数：3

共 8 条

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