DocumentCode :
3433919
Title :
Novel technique for performance improvement in impedance-transforming planar Marchand baluns
Author :
Phromloungsri, R. ; Srisathit, S. ; Chongcheawchamnan, M. ; Robertson, I.D.
Author_Institution :
Dept. of Telecommun. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand
Volume :
1
fYear :
2005
fDate :
4-6 Oct. 2005
Abstract :
A new technique which significantly improves the performance of a microstrip Marchand balun is described in this paper. The technique uses a series capacitor at the unbalanced input port to improve the matching bandwidth and inductors at the ground connections to greatly improve amplitude/phase balance. The technique is demonstrated with experimental results of a 50-150 Ω balun at 900 MHz. The measured results show amplitude/phase tracking within 0.1 dB and 1 degree over a 40% operating bandwidth.
Keywords :
baluns; capacitors; inductors; microstrip components; 50 to 150 ohm; 900 MHz; capacitors; impedance-transforming planar Marchand baluns; inductors; microstrip Marchand balun; unbalanced input port; Bandwidth; Capacitors; Couplers; Impedance matching; Inductors; Microstrip; Microwave photonics; Microwave technology; Microwave theory and techniques; Transmission lines;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Microwave Conference, 2005 European
Print_ISBN :
2-9600551-2-8
Type :
conf
DOI :
10.1109/EUMC.2005.1608911
Filename :
1608911
Link To Document :
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