Title :
A high dynamic range, digitally tuned, Q-enhanced LC bandpass filter for cellular/PCS receivers
Author :
Kuhn, W.B. ; Yanduru, N.K. ; Wyszynski, A.S.
Author_Institution :
Kansas State Univ., Manhattan, KS, USA
Abstract :
A fully-integrated, 850 MHz, 2-pole, bandpass filter with a 2 percent fractional bandwidth is reported. The filter provides digital control of center frequency and Q, and includes a companion on-chip oscillator suitable for master-slave tuning. Prototype measurements show a dynamic range of 75 dB when used in a system with a 1 MHz final IF bandwidth, and an oscillator phase noise of -105 dBc/Hz at 100 kHz offset.
Keywords :
Q-factor; UHF filters; active filters; band-pass filters; cellular radio; circuit tuning; radio receivers; 1 MHz; 850 MHz; IF bandwidth; Q-enhanced LC bandpass filter; cellular/PCS receiver; digital tuning; dynamic range; fully-integrated two-pole bandpass filter; master-slave tuning; on-chip oscillator; phase noise; Band pass filters; Bandwidth; Digital control; Digital filters; Digital-controlled oscillators; Dynamic range; Frequency; Master-slave; Prototypes; Tuning;
Conference_Titel :
Microwave Symposium Digest, 1998 IEEE MTT-S International
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-4471-5
DOI :
10.1109/MWSYM.1998.689331
