@inproceedings{scholars8578,
           pages = {513--516},
           title = {Switchable bandstop to bandpass filter using parallel-coupled resonator},
         journal = {Asia-Pacific Microwave Conference Proceedings, APMC},
       publisher = {Institute of Electrical and Electronics Engineers Inc.},
             doi = {10.1109/APMC.2017.8251494},
            year = {2017},
            note = {cited By 6; Conference of 2017 IEEE Asia Pacific Microwave Conference, APMC 2017 ; Conference Date: 13 November 2017 Through 16 November 2017; Conference Code:134147},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044742292&doi=10.1109\%2fAPMC.2017.8251494&partnerID=40&md5=cc431ed4e075e78747dc7ab0e8ec86a8},
        keywords = {Crystal resonators; Microwave filters; Notch filters; Resonators; Semiconductor diodes, absorptive; Band pass; Band-stop; Low-loss; Switchable filters, Bandpass filters},
        abstract = {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 {\^I}?/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. {\^A}{\copyright} 2017 IEEE.},
          author = {Zahari, M. K. and Ahmad, B. H. and Wong, P. W. and Shairi, N. A.},
            isbn = {9781538606407}
}