A fully integrated radar receiver front end including an active tunable band pass filter and an image rejection mixer

Author

Gustafsson, A. ; Alfredsson, M. ; Danestig, M. ; Malmqvist, R. ; Ouacha, A.

Author_Institution

Defence Res. Establ., Linkoping, Sweden

fYear

2000

fDate

2000

Firstpage

99

Lastpage

102

Abstract

A fully integrated X-band radar receiver front end based on only one down converting stage has been designed. The two chip MMIC (monolithic microwave integrated circuit) front end includes an active tunable bandpass filter in combination with an image rejection mixer. A novel digital time shifter is utilised to accomplish the tunability of the bandpass filter. The tuning range of the filter is between 8.7 and 9.8 GHz. With the intermediate frequency (IF) equal to 360 MHz, the total image rejection of the front end exceeds 45 dB. These results indicates that a compact one chip X-band radar receiver front end can be achieved

Keywords

MMIC mixers; active filters; band-pass filters; circuit tuning; microwave filters; radar receivers; 8.7 to 9.8 GHz; X-band MMIC chip; active tunable band pass filter; digital time shifter; down converting stage; fully-integrated radar receiver front-end; image rejection mixer; Band pass filters; Circuit optimization; Image converters; MMICs; Microwave integrated circuits; Mixers; Monolithic integrated circuits; Radar imaging; Tunable circuits and devices; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2000 Asia-Pacific

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6435-X

Type

conf

DOI

10.1109/APMC.2000.925728

Filename

925728