Wide-band low-loss high-isolation microstrip periodic-stub diplexer for multiple-frequency applications

作者: B. Strassner , K. Chang

DOI: 10.1109/22.954789

关键词:

摘要: This paper introduces a three-port microstrip multifrequency diplexer used in phased-array transceiver system that employs band-stop filters with open-circuited stubs for band selection and separation. The is designed to take 10, 12, 19, 21 GHz into port 1 separate 10 19 2 12 part 3 minimal dispersion. insertion loss each frequency varies from 0.4 3.4 db the return better than dB. isolation between channels at four frequencies greater 50 Each passband created adjacent stopbands has bandwidth over GHz. using periodic collectively have advantages of low loss, high rejection, wide-band performance on channel, easy fabrication. type many applications transceivers communication systems.

参考文章(8)
George Lawrence Matthaei, Leo Young, Edward McClung Thompson Jones, Microwave Filters, Impedance-Matching Networks, and Coupling Structures ,(1980)
G. Czawka, A new ring microstrip diplexer 12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195). ,vol. 2, pp. 518- 522 ,(1998) , 10.1109/MIKON.1998.740834
M.H. Capstick, Microstrip lowpass-bandpass diplexer topology Electronics Letters. ,vol. 35, pp. 1958- 1960 ,(1999) , 10.1049/EL:19991303
G.L. Matthaei, E.G. Cristal, Multiplexer Channel-Separating Units Using Interdigital and Parallel-Coupled Filters IEEE Transactions on Microwave Theory and Techniques. ,vol. 13, pp. 328- 334 ,(1965) , 10.1109/TMTT.1965.1125997
A.F. Sheta, J.P. Coupez, G. Tanne, S. Toutain, J.P. Blot, Miniature microstrip stepped impedance resonator bandpass filters and diplexers for mobile communications international microwave symposium. ,vol. 2, pp. 607- 610 ,(1996) , 10.1109/MWSYM.1996.511007
G. Henryk, Microwave diplexer with direct coupled filters 12th International Conference on Microwaves and Radar. MIKON-98. Conference Proceedings (IEEE Cat. No.98EX195). ,vol. 2, pp. 620- 623 ,(1998) , 10.1109/MIKON.1998.740933
R.J. Wenzel, Printed-Circuit Complementary Filters for Narrow Bandwidth Multiplexers IEEE Transactions on Microwave Theory and Techniques. ,vol. 16, pp. 147- 157 ,(1968) , 10.1109/TMTT.1968.1126635
David M Pozar, Microwave Engineering ,(1990)