Title :
LTCC-MLC chip-type balun realised by LC resonance method
Author :
Tang, C.W. ; Chang, C.Y.
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
5/23/2002 12:00:00 AM
Abstract :
A multilayer ceramic balun designed in the 2.4 GHz ISM band frequency is presented. A multilayer structure to realise the low temperature co-fired ceramic (LTCC) balun is proposed. This type of balun comprises an embedded capacitor and meandered or spiral coupled lines. The use of an LC resonator can shrink the length of a coupled transmission line and can be designed very easily to have various balanced output port impedances. Excellent performance of phase and amplitude balance may be achieved by the proposed method. Measured results of the LTCC-multilayer ceramic (MLC) balun match well with the computer simulation
Keywords :
baluns; ceramics; coupled transmission lines; electric impedance; microwave devices; 2.4 GHz; ISM band frequency; LC resonance method; LTCC-MLC chip-type balun; amplitude balance; balanced output port impedances; coupled transmission line; embedded capacitor; equivalent circuit; low temperature co-fired ceramic balun; meandered coupled lines; multilayer ceramic balun; multilayer structure; phase balance; spiral coupled lines;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20020340
