@article{scholars13982,
           title = {Synthesis of chained-elliptic function waveguide bandpass filter with high rejection},
            year = {2020},
             doi = {10.2528/pierc19112002},
           pages = {61--75},
         journal = {Progress In Electromagnetics Research C},
          volume = {99},
            note = {cited By 3},
       publisher = {Electromagnetics Academy},
        abstract = {{\^a}??This paper describes the synthesis of a bandpass filter to achieve high selectivity and rejection properties using a new class of filter functions called chained-elliptic function filters. Chained-elliptic filters have higher selectivity than Chebyshev function filters and have the property of sensitivity to manufacturing tolerance reduction in chained-function filters. The proposed design has high selectivity and reduced sensitivity, enabling easier and faster filter fabrication. The characteristic polynomials of chained-elliptic function filters are derived (through chaining elliptic filtering function) and extracted to form a coupling matrix of the bandpass filter. The novel transfer polynomials are given in detail, and a thorough investigation of the filter characteristics is performed. A theoretical comparison with Chebyshev and elliptic filters of the same order is performed to ascertain the demonstrated advantages of this proposed filter class. A high frequency narrow-band fourth-order chained-elliptic function waveguide filter centred at 28 GHz with a fractional bandwidth of 1.61 is fabricated to validate the proposed design concept. A good match among the measured, simulated, and ideal filter responses is shown where the overall responses between measurement and simulation have a difference of approximately 2 which is within the acceptable limit. The chained-elliptic function concept will be useful in designing low-cost high-performance microwave filters with various fabrication technologies for millimetre-wave applications. {\^A}{\copyright} 2020, Electromagnetics Academy. All rights reserved.},
            issn = {19378718},
          author = {Ng, G. S. and Cheab, S. and Wong, P. W. and Soeung, S.},
             url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078913475&doi=10.2528\%2fpierc19112002&partnerID=40&md5=14c5e9d758b25fbbfb6dc7a7631eb607},
        keywords = {Bandpass filters; Bandwidth; Chebyshev filters; Elliptic filters; Microwave filters; Millimeter waves, Characteristic polynomials; Elliptic function filters; Fabrication Technologies; Filter characteristics; Fractional bandwidths; Manufacturing tolerances; Measurement and simulation; Millimetre wave applications, Waveguide filters}
}