Novel compact tunable bandpass filter using capacitively loaded H-shaped resonator

Hany A. Atallah, Adel B. Abdel-Rahman, Kuniaki Yoshitomi, Ramesh Pokharel

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, a new compact bandpass filter with continued large tunable frequency band is proposed and developed for reconfigurable communication applications and mostly for filtenna designs in cognitive radio (CR) systems. The symmetrical H-shaped resonator consists of two connected rectangular microstrip resonators. The technique is based on centrally loading the H-shaped resonator with only a single varactor diode. Tunability is achieved by electrically tuning the operating frequency of the filter by adjusting the varactor capacitance using DC voltage. Increasing the varactor capacitance results in decreasing the resonant even-mode of the H-shaped resonator without affecting the dominant odd-mode. Furthermore, the simple biasing of the varactor diode has no effect on the filter performance. Measurement results show that the proposed filter is capable of tuning over a wide operating band of 2.32 GHz covering continuous bands from 3.68 to 6 GHz. Moreover, the scattering parameters of the proposed filter are successfully optimized with numerical experimentation techniques using 3D full-wave electromagnetic simulator. The proposed design is fabricated and measured for verification purposes. Good agreement is found between the simulated and the measured data.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages233-236
Number of pages4
ISBN (Electronic)9781509002467
DOIs
Publication statusPublished - Mar 23 2016
EventIEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 - Cairo, Egypt
Duration: Dec 6 2015Dec 9 2015

Publication series

NameProceedings of the IEEE International Conference on Electronics, Circuits, and Systems
Volume2016-March

Other

OtherIEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015
CountryEgypt
CityCairo
Period12/6/1512/9/15

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Novel compact tunable bandpass filter using capacitively loaded H-shaped resonator'. Together they form a unique fingerprint.

  • Cite this

    Atallah, H. A., Abdel-Rahman, A. B., Yoshitomi, K., & Pokharel, R. (2016). Novel compact tunable bandpass filter using capacitively loaded H-shaped resonator. In 2015 IEEE International Conference on Electronics, Circuits, and Systems, ICECS 2015 (pp. 233-236). [7440291] (Proceedings of the IEEE International Conference on Electronics, Circuits, and Systems; Vol. 2016-March). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICECS.2015.7440291