Title :
Compact filters with cross-coupled resonators
Author :
Banciu, M.G. ; Lojewski, G. ; Ioachim, A.
Author_Institution :
Nat. Inst. for Mater. Phys., Bucuresti-Magurele, Romania
fDate :
28 Sept.-2 Oct. 2003
Abstract :
Designs of new compact filters using cross-coupled resonators are presented. The square shape resonators require only 40% of the area of folded open loop half-wavelength resonators. The filters were designed for the 900 MHz band of the mobile communications systems (GSM, GPRS, etc.). The cross coupling provides a better filter skirt for a higher selectivity. The effect of the resonator finite quality factors was confirmed for the cross-coupled filters.
Keywords :
Q-factor; cellular radio; crystal resonators; finite difference time-domain analysis; packet radio networks; radiofrequency filters; radiotelephony; 900 MHz; compact filters; cross-coupled filters; cross-coupled resonators; filter skirt; folded open loop half-wavelength resonators; higher selectivity; resonator finite quality factors; square shape resonators; Admittance; Band pass filters; Coupling circuits; Equivalent circuits; GSM; Inverters; Mobile communication; Resonator filters; Superconducting filters; Transmission line matrix methods;
Conference_Titel :
Semiconductor Conference, 2003. CAS 2003. International
Print_ISBN :
0-7803-7821-0
DOI :
10.1109/SMICND.2003.1251357
