Wideband 2 to 6 GHz RF Front-End With Blocker Filtering

被引：13

作者：

Kaltiokallio, Mikko ^{[1
]}

Saari, Ville

Kallioinen, Sami

Parssinen, Aarno

Ryynanen, Jussi ^{[1
]}

机构：

[1] Aalto Univ, Dept Micro & Nanosci, Espoo 02150, Finland

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2012年 / 47卷 / 07期

关键词：

Adaptive filters; broadband amplifiers; cognitive radio; complex filters; impedance transformation; passive mixer; radio receivers; transferred impedance filter; tunable amplifiers; RECEIVER;

D O I：

10.1109/JSSC.2012.2191348

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 wideband blocker filtering technique for an RF front-end. A wideband LNA and a transferred impedance filter are implemented as part of a receiver to demonstrate the feasibility of the system. The transferred impedance filter includes an adjustable polyphase filter to compensate for the phase shift in the system in order to maintain correct operating frequency. The transferred impedance filter with passive mixers and the wideband LNA are analyzed by means of frequency transformation to demonstrate the different design trade-offs. The front-end achieves a gain of 43 and 41 dB and a noise figure of 3.2 and 5.7 dB with an IIP3 of -13 and -5 dBm with the transferred-impedance filter turned off and on, respectively. An added selectivity of 6 dB is achieved by using the solutions described in this paper.

引用

页码：1636 / 1645

页数：10

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