Multi-coupled resonator microwave diplexer with high isolation

Book chapter


Nwajana, Augustine O. and Yeo, K. 2016. Multi-coupled resonator microwave diplexer with high isolation. in: Proceedings of the 2016 46th European Microwave Conference (EuMC) Institute of Electrical and Electronics Engineers (IEEE). pp. 1167-1170
AuthorsNwajana, Augustine O. and Yeo, K.
Abstract

A microwave diplexer achieved by coupling a dual-band bandpass filter onto two single-bands (transmit, Tx and receive, Rx) bandpass filters is presented. This design eliminates the need for employing external junctions in diplexer design, as opposed to the conventional design approach which requires separate junctions for energy distribution. A 10-pole (10th order) diplexer has been successfully designed, simulated, fabricated and measured. The diplexer is composed of 2 poles from the dual-band filter, 4 poles from the Tx bandpass filter, and the remaining 4 poles from the Rx bandpass filter. The design was implemented using asynchronously tuned microstrip square open-loop resonators. The simulation and measurement results show that an isolation of 50 dB is achieved between the diplexer Tx and Rx bands. The minimum insertion loss is 2.88 dB for the transmit band, and 2.95 dB for the receive band.

Book titleProceedings of the 2016 46th European Microwave Conference (EuMC)
Page range1167-1170
Year2016
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Publication dates
Print19 Jan 2016
Publication process dates
Deposited06 Sep 2017
Event2016 46th European Microwave Conference (EuMC)
ISBN978-2-87487-043-9
978-1-5090-1514-6
Digital Object Identifier (DOI)doi:10.1109/EuMC.2016.7824556
Web address (URL)https://doi.org/10.1109/EuMC.2016.7824556
Additional information

© 2016 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.

Accepted author manuscript
License
CC BY
Permalink -

https://repository.uel.ac.uk/item/852qy

  • 11
    total views
  • 68
    total downloads
  • 2
    views this month
  • 7
    downloads this month

Related outputs

8 pole high temperature superconductor microstrip dual band bandpass filter design
Yeo, K. and Lancaster, Michael J. 2011. 8 pole high temperature superconductor microstrip dual band bandpass filter design. in: Proceedings of 2011 IEEE MTT-S International Microwave Symposium Institute of Electrical and Electronics Engineers (IEEE). pp. 1-4
Quasi-elliptic microstrip bandstop filter using tap coupled open-loop resonators
Yeo, K. and Vijaykumar, Punna 2012. Quasi-elliptic microstrip bandstop filter using tap coupled open-loop resonators. Progress In Electromagnetics Research C. 35, pp. 1-11.
A novel microstrip dual-band bandpass filter using dual-mode square patch resonators
Yeo, K. and Nwajana, Augustine Onyenwe 2013. A novel microstrip dual-band bandpass filter using dual-mode square patch resonators. Progress In Electromagnetics Research C. 36, pp. 233-247.
Filtered power splitter using microstrip square open loop resonators
Dainkeh, Amadu, Nwajana, Augustine O. and Yeo, K. 2016. Filtered power splitter using microstrip square open loop resonators. Progress In Electromagnetics Research C. 64, pp. 133-140.
Microwave Diplexer Purely Based on Direct Synchronous and Asynchronous Coupling
Nwajana, A. O. and Yeo, K. 2016. Microwave Diplexer Purely Based on Direct Synchronous and Asynchronous Coupling. Radioengineering. 25 (2), pp. 247-252.
Low cost SIW Chebyshev bandpass filter with new input/output connection
Nwajana, Augustine O., Yeo, K. and Dainkeh, Amadu 2017. Low cost SIW Chebyshev bandpass filter with new input/output connection. in: 2016 16th Mediterranean Microwave Symposium (MMS) Institute of Electrical and Electronics Engineers (IEEE). pp. 1-4
Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling
Nwajana, Augustine, Dainkeh, A. and Yeo, K. 2017. Substrate Integrated Waveguide (SIW) Bandpass Filter with Novel Microstrip-CPW-SIW Input Coupling. Journal of Microwaves, Optoelectronics and Electromagnetic Applications. 16 (2), pp. 393-402.