Title :
Compact high isolation dual-band bandpass filter
Author :
Babu, E. Dilli ; Ramesh, M. ; Kalghatgi, Ajit T.
Author_Institution :
Central Res. Lab., Bharat Electron. Ltd., Bangalore, India
Abstract :
This paper presents a compact high isolation dual- band bandpass filter using dual mode resonators and lumped elements for wireless applications. Multiple Transmission Zeros(TZs) are created to improve the selectivity and isolation between two bands using inductive cross coupling. The symmetrical coupling mechanism is realized for both the bands to achieve isolation better than 33dB. The designed filter being very compact will be suitable for wireless applications. Measured results agree well with the simulation results.
Keywords :
band-pass filters; radio networks; resonators; TZ; compact high-isolation dual-band bandpass filter; dual-mode resonators; inductive cross coupling; isolation improvement; lumped elements; selectivity improvement; symmetrical coupling mechanism; transmission zero; wireless applications; Bandwidth; Couplings; Dual band; Inductors; Resonant frequency; Wireless LAN; Wireless communication; Bandpass filter(BPF); Dual mode resonator; Dual-band; Fractional ban-width(FBW); Stepped impedance res-onator(SIR);
Conference_Titel :
Microwave Conference (EuMC), 2011 41st European
Conference_Location :
Manchester
Print_ISBN :
978-1-61284-235-6
