TY  - JOUR
A1  - Ng, G.S.
A1  - Cheab, S.
A1  - Wong, P.W.
A1  - Soeung, S.
Y1  - 2020///
TI  - Synthesis of chained-elliptic function waveguide bandpass filter with high rejection
SN  - 19378718
ID  - scholars13982
SP  - 61
N1  - cited By 3
PB  - Electromagnetics Academy
UR  - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85078913475&doi=10.2528%2fpierc19112002&partnerID=40&md5=14c5e9d758b25fbbfb6dc7a7631eb607
EP  - 75
KW  - Bandpass filters; Bandwidth; Chebyshev filters; Elliptic filters; Microwave filters; Millimeter waves
KW  -  Characteristic polynomials; Elliptic function filters; Fabrication Technologies; Filter characteristics; Fractional bandwidths; Manufacturing tolerances; Measurement and simulation; Millimetre wave applications
KW  -  Waveguide filters
VL  - 99
JF  - Progress In Electromagnetics Research C
N2  - �??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. © 2020, Electromagnetics Academy. All rights reserved.
AV  - none
ER  -