Title :
Intermodulation distortion in wide-band dual-mode bulk ferroelectric bandpass filters
Author :
Chakraborty, Tanusri ; Hunter, Ian ; Kurchania, Rajnish ; Bell, Andrew ; Chakraborty, Subhasish
Author_Institution :
Inst. of Microwaves & Photonics, Leeds Univ., UK
Abstract :
An investigation into intermodulation (IM) distortion in bulk ferroelectric bandpass filters is presented. The main objective has been to study the effect of the response time of ferroelectric material on IM distortion. In order to investigate the response, time IM measurements with wide carrier frequency spacing must be performed. Thus a novel planar dual-mode bandpass filter, with 600 MHz bandwidth at 2 GHz, has been designed and fabricated on a bulk Barium Strontium Titanate (BST) substrate. The two tone third-order IM has been measured for a range of signal separations in order to estimate the material response time.
Keywords :
band-pass filters; barium compounds; ferroelectric semiconductors; intermodulation distortion; intermodulation measurement; strontium compounds; substrates; IM measurements; bulk ferroelectric bandpass filters; disc resonator; dual-mode bandpass filters; ferroelectric material; intermodulation distortion; material response time; planar dual-mode bandpass filter; signal separations; wide carrier frequency spacing; wide-band bandpass filters; Band pass filters; Delay; Distortion measurement; Ferroelectric materials; Frequency measurement; Intermodulation distortion; Performance evaluation; Time factors; Time measurement; Wideband;
Conference_Titel :
Microwave Symposium Digest, 2005 IEEE MTT-S International
Print_ISBN :
0-7803-8845-3
DOI :
10.1109/MWSYM.2005.1516675
