Title :
Elliptic function filters designed in LTCC
Author :
Zhang, Sheng Zhang ; Yu, Zhi Yuan ; Li, Can
Author_Institution :
China Univ. of Electron. Sci. & Technol., Chengdu, China
Abstract :
A 35GHz elliptic function four poles bandpass filter that is compatible with multi-layer substrate integrated wave-guide (MSIW) technique based on low temperature co-fired ceramics (LTCC) is presented. The filter consists of four MSIW cavities in a multi-layer design, with evanescent-mode coupling between adjacent cavities and a cross coupling between the first and last cavities, and are fed by micro-strip lines through slot apertures. The simulated filter response has a bandwidth of 1.6% centered at 35 GHz with an insertion loss of 1dB, and two poles at 34.39 GHz and 35.73 GHz, respectively.
Keywords :
band-pass filters; ceramics; elliptic filters; microstrip lines; millimetre wave filters; waveguide filters; 1 dB; 34.39 GHz; 35 GHz; 35.73 GHz; LTCC; MSIW cavities; MSIW technique; bandpass filter; elliptic function filters; evanescent-mode coupling; insertion loss; low temperature co-fired ceramics; microstrip lines; multilayer design; multilayer substrate integrated waveguide; slot apertures; Apertures; Band pass filters; Bandwidth; Coupling circuits; Frequency; Insertion loss; Microwave filters; Resonator filters; Symmetric matrices; Transmission line matrix methods; LTCC; elliptic filter; substrate integrated wave-guide (SIW);
Conference_Titel :
Microwave Conference Proceedings, 2005. APMC 2005. Asia-Pacific Conference Proceedings
Print_ISBN :
0-7803-9433-X
DOI :
10.1109/APMC.2005.1606297
