Switchable bandstop to bandpass filter using parallel-coupled resonator

Zahari, M.K. and Ahmad, B.H. and Wong, P.W. and Shairi, N.A. (2018) Switchable bandstop to bandpass filter using parallel-coupled resonator. Asia-Pacific Microwave Conference Proceedings, APMC . pp. 513-516.

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A new prototype of switchable bandstop to bandpass filter was designed and fabricated by using parallel-coupled lossy resonator. The lossy resonator topology was used to partially compensate for the losses. The fundamentals of having two lossy Q resonator structures are that it exhibits a bandpass filter, where the parallel-coupled resonator is disconnected with the λ/4 wavelength. PIN diodes are used to change the filter's response. In the experiments, the filter exhibited a high-Q bandstop response when the PIN diodes were switched 'ON' with an operating frequency of 2.4GHz, an attenuation of 75dB and return loss S11 > 20dB. The lossy bandpass filter was produced when the PIN diodes were switched 'OFF'. The theoretical analysis together with the fabrication results were presented in this paper. © 2017 IEEE.

Item Type:Article
Impact Factor:cited By 0; Conference of 2017 IEEE Asia Pacific Microwave Conference, APMC 2017 ; Conference Date: 13 November 2017 Through 16 November 2017; Conference Code:134147
Uncontrolled Keywords:Crystal resonators; Microwave filters; Notch filters; Resonators; Semiconductor diodes, absorptive; Band pass; Band-stop; Low-loss; Switchable filters, Bandpass filters
ID Code:21856
Deposited By: Ahmad Suhairi
Deposited On:01 Aug 2018 02:58
Last Modified:01 Aug 2018 02:58

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