Institution of Engineering and Technology;Stevenage: Institution of Engineering and Technology
摘要:
摘要： Techniques for selectivity enhancement of lumped-distributed baluns are proposed. Transmission zeros are introduced by adding circuit components to the balun. First, novel balun circuits that possess a transmission zero in differential-mode operation are proposed. A shunt capacitor is then, added to the balun to provide a mechanism for tuning the position of the zero. To further improve the frequency selectivity, one more transmission zero that appears in both three-port and differential-mode operations is introduced by adding one transmission line and two capacitors to the balun. The proposed circuits are realised by using a low-temperature, co-fired ceramic process and validated by measurements. 出版者： Stevenage: Institution of Engineering and Technology 出版日期： 2012-01-31 出處： IET microwaves, antennas & propagation, 2012-01, Vol.6 (2), p.165-171 版權： 2015 INIST-CNRS 版權： Copyright The Institution of Engineering & Technology Jan 2012 識別號： ISSN: 1751-8725 識別號： EISSN: 1751-8733 識別號： DOI: 10.1049/iet-map.2011.0063
