Design of compact diplexer with novel matching network using cascaded quadruplet filters
Authors:
- 22 December 2016
- journal article
- research article
- Published by Wiley in Microwave and Optical Technology Letters
- Vol. 59 (2) , 315-318
Abstract
This letter reports a new kind of matching network to design diplexer. The matching network is comprised by two open‐circuited and one short‐circuited transmission lines. By properly adjusting the input admittance of the matching network, each channel of the diplexer can be designed independently. Therefore, the diplexer can be easily realized by the connection of different bandpass filters without further tuning. Moreover, the proposed matching network occupies little place, and thus the size of the diplexer is mostly determined by the filters. Systematic design procedure for the network is fully presented in this letter. To illustrate the concept, a diplexer is designed, fabricated, and measured. Simulated and measured results are found to be in good agreement with each other. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:315–318, 2017Keywords
Funding Information
- National Natural Science Foundation of China (61571194)
This publication has 10 references indexed in Scilit:
- Compact and High-Isolation Diplexer Using Dual-Mode Stub-Loaded ResonatorsIEEE Microwave and Wireless Components Letters, 2014
- Compact Balanced-to-Balanced Microstrip Diplexer With High Isolation and Common-Mode SuppressionIEEE Microwave and Wireless Components Letters, 2013
- Frequency diplexer using multimode bandpass filters with high stopband attenuation levelElectronics Letters, 2013
- Design of Microstrip Lowpass-Bandpass DiplexerIEEE Microwave and Wireless Components Letters, 2013
- High isolation diplexer using quarter-wavelength resonator filterElectronics Letters, 2012
- Microstrip Diplexer Design Using Common T-Shaped ResonatorIEEE Microwave and Wireless Components Letters, 2011
- Signal-Interference Stepped-Impedance-Line Microstrip Filters and Application to DuplexersIEEE Microwave and Wireless Components Letters, 2011
- High Isolation and Compact Diplexer Using the Hybrid ResonatorsIEEE Microwave and Wireless Components Letters, 2010
- UMTS diplexer design using dual-mode stripline ring resonatorsElectronics Letters, 2007
- Microstrip diplexers design with common resonator sections for compact size, but high isolationIEEE Transactions on Microwave Theory and Techniques, 2006