Title :
A novel flexible filter with enhanced coupling effect using mixed coupling
Author :
Kim, Jin-Sup ; Lee, Jae-Young ; Lee, Gyu-Bok
Author_Institution :
Convergence Commun. Components Res. Center, Korea Electron. Technol. Inst., Seongnam, South Korea
Abstract :
In this paper, we present a bandpass filter using FPCB (Flexible Printed Circuit Board). A novel FPCB bandpass filter is proposed and implemented using a coplanar waveguide (CPW), aiming at transmitting the signals in the passband of 2.4-2.5GHz. It is composed of two quarter-wavelength resonators and coupling patterns. The coupling patterns are composed of broadside and cross coupling configuration in bottom side. After optimization of this filter, a good bandpass behavior with two transmission poles is theoretically realized and experimentally confirmed. Within the whole BPF passband, the return loss is found better than 26dB, and the insertion loss is less than 1dB.
Keywords :
band-pass filters; coplanar waveguides; flexible electronics; printed circuits; resonator filters; bandpass filter; coplanar waveguide; coupling pattern; cross coupling configuration; filter optimization; flexible filter; flexible printed circuit board; mixed coupling; quarter-wavelength resonator; transmission poles; Band pass filters; Couplings; Insertion loss; Loss measurement; Microwave filters; Resonator filters; Scattering parameters; CPW; FPCB; broadside coupling; cross coupling; resonators;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2010 Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7590-2
Electronic_ISBN :
978-1-902339-22-2
