Q-enhanced LC bandpass filters for integrated wireless applications

Author

Kuhn, William B. ; Yanduru, Naveen K. ; Wyszynski, Adam S.

Author_Institution

Dept. of Electr. & Comput. Eng., Kansas State Univ., Manhattan, KS, USA

Volume

46

Issue

12

fYear

1998

fDate

12/1/1998 12:00:00 AM

Firstpage

2577

Lastpage

2586

Abstract

Q-enhanced LC filter technology offers an alternative to the use of direct conversion techniques for implementing fully integrated receivers. Design and performance issues for QE LC filters are discussed and a fully integrated 850 MHz, two-pole, bandpass filter with an 18 MHz 3 dB bandwidth is reported. The prototype design is implemented in a standard 0.8 μm CMOS process and achieves a rejection of over 50 dB at 100 MHz offset, an in-band dynamic range of 75 (90) dB when used in a system with a 1 MHz (30 kHz) final IF bandwidth, and a third-order intercept point that exceeds +25 dBm at an 80 MHz offset from the passband center,

Keywords

CMOS analogue integrated circuits; Q-factor; UHF filters; UHF integrated circuits; active filters; band-pass filters; circuit tuning; integrated circuit design; radio receivers; 0.8 micron; 18 MHz; 850 MHz; CMOS process; LC bandpass filters; Q-enhanced LC bandpass filters; RFIC; fully integrated receivers; integrated wireless applications; two-pole bandpass filter; Band pass filters; Bandwidth; Baseband; Circuits; Dynamic range; Filtering; Inductors; Radio frequency; Receivers; Spirals;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.739250

Filename

739250