Title :
Compact LTCC dual-band bandpass filter using stepped impedance resonators
Author :
Xin Dai ; Xiu Yin Zhang ; Ze Yu Cai
Author_Institution :
Sch. of Electron. & Inf. Eng., South China Univ. of Technol., Guangzhou, China
Abstract :
This paper presents a low-temperature co-fired ceramic (LTCC) dual-band bandpass filter with compact size and high selectivity. By using one set of stepped impedance resonators (SIRs), a 2.45/5.2GHz dual band filter is achieved. A novel source-load coupling is induced to generate three transmission zeros (TZs), resulting in high selectivity. The circuit size is 2.8 mm×2.5 mm×0.8 mm. The filter responses are presented to verify the theoretical predications.
Keywords :
band-pass filters; ceramics; electric impedance; resonator filters; SIR; TZ; compact LTCC dual-band bandpass filter; compact size; filter responses; frequency 2.45 GHz; frequency 5.2 GHz; high selectivity; low-temperature cofired ceramic; source-load coupling; stepped impedance resonators; transmission zeros; Abstracts; Couplings; Dual band; Educational institutions; Radio frequency; LTCC; dual-band bandpass filter; miniaturization; quarter-wavelength resonators; stepped-impedance resonators;
Conference_Titel :
Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2013
Conference_Location :
Chengdu
DOI :
10.1109/CSQRWC.2013.6657364
