Title :
Ultra-wideband bandpass filter using hybrid microstrip/ACPW structures
Author :
Li, Xiaoming ; Fang, Shaojun ; Fu, Shiqiang
Author_Institution :
Sch. of Inf. Sci. & Technol., Dalian Maritime Univ., Dalian, China
Abstract :
A novel ultra-wideband (UWB) bandpass filter with hybrid microstrip and asymmetric coplanar waveguide (ACPW) structure is proposed. The filter is realized by coupling between an ACPW quarter-wavelength resonator and two microstrip open-circuited stubs. Parameters of the design were obtained by electromagnetic (EM) simulation and optimization. From the simulation results, it can be shown that the passband frequency range (-3dB bandwidth) is from 3.1GHz to 10.6 GHz, which satisfies to the range allocated to UWB system by FCC. Moreover, the filter can exhibit a better performance at upper stopband from 12GHz to 19GHz with |S21| less than -10dB. The size of the proposed filter is around 0.25×0.25 wavelength of center frequency, which is relatively small.
Keywords :
band-pass filters; band-stop filters; coplanar waveguides; electromagnetic coupling; microstrip filters; resonator filters; ultra wideband communication; ACPW structure; asymmetric coplanar waveguide structure; coupling; electromagnetic optimization; electromagnetic simulation; frequency 12 GHz to 19 GHz; frequency 3.1 GHz to 10.6 GHz; hybrid microstrip structure; microstrip open-circuited stub; quarter-wavelength resonator; stopband filter; ultra-wideband bandpass filter; Band pass filters; Coplanar waveguides; Design optimization; Electromagnetic waveguides; Microstrip filters; Microstrip resonators; Passband; Radio spectrum management; Resonator filters; Ultra wideband technology; Bandpass filters (BPFs); asymmetric coplanar waveguide (ACPW); microstrip; ultra wideband (UWB);
Conference_Titel :
Microwave, Antenna, Propagation and EMC Technologies for Wireless Communications, 2009 3rd IEEE International Symposium on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-4076-4
DOI :
10.1109/MAPE.2009.5355882
