5-6 GHz monolithically integrated calibratable low-noise downconverter for smart antenna arrays

Author

Brauner, T. ; Vogt, R. ; Bächtold, W.

Author_Institution

Lab. for Electromagn. Fields & Microwave Electron., Swiss Fed. Inst. of Technol., Zurich, Switzerland

fYear

2003

Firstpage

435

Lastpage

438

Abstract

An integrated downconverter for active antenna arrays is presented. From 5.125 GHz to 5.875 GHz the downconverter shows more than 20 dB conversion gain and a noise figure of less than 3.8 dB with a minimum of 3.3 dB. Input 1 dB compression point is -18 dBm. Image rejection better than 35 dB is achieved using an integrated lumped-element bandpass filter. A switchable symmetric input amplifier is proposed to calibrate amplitude and phase errors without degrading the noise figure.

Keywords

MMIC frequency convertors; active antenna arrays; adaptive antenna arrays; calibration; 20 dB; 3.3 to 3.8 dB; 5 to 6 GHz; active antenna array; amplitude error; calibration; conversion gain; image rejection; low-noise downconverter; lumped-element bandpass filter; monolithic integration; noise figure; phase error; smart antenna array; switchable symmetric input amplifier; Antenna arrays; Band pass filters; Degradation; Filtering; Frequency; Image converters; Linearity; Microwave antenna arrays; Noise figure; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Radio Frequency Integrated Circuits (RFIC) Symposium, 2003 IEEE

ISSN

1529-2517

Print_ISBN

0-7803-7694-3

Type

conf

DOI

10.1109/RFIC.2003.1213979

Filename

1213979