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Design of Highly Selective Band-pass Filter with Wide Stop-band using Open Stubs and Spurlines for Satellite Communication (SATCOM) Applications

Authors:
Nitin Muchhal
Mostafa Elkhouly
Kurt Blau
Shweta Srivastava

Keywords: Composite BPF; Open Stub; Spurlines; Harmonic Suppression; SATCOM

Abstract:
A miniaturized selective composite microstrip band pass filter (BPF) with a 3-dB fractional bandwidth of 52.5% (14.2 GHz to 24.5 GHz) with wide upper stop-band for SATCOM application is proposed. The design consists of a composite BPF implanted with pair of quarter-wavelength open-circuited stub and spurline. These elements are combined to form a miniaturized filter with a compact occupied area of 0.72λg× 0.55 λg (≈ 0.26 cm2). The filter is simulated on 0.008” (0.203 mm) Rogers 4003C with dielectric constant, ɛr=3.55 using commercial full-wave electromagnetic simulator HFSS v16. Simulated results show that BPF has resonant frequency (f0) as 14.2 GHz and wide (>3f0) stop band without increasing circuit size. Further, Spur line behaves as notch filter to suppress the first harmonics (or second pass-band) of proposed BPF.

Pages: 6 to 11

Copyright: Copyright (c) IARIA, 2022

Publication date: April 24, 2022

Published in: conference

ISSN: 2308-4480

ISBN: 978-1-61208-939-3

Location: Barcelona, Spain

Dates: from April 24, 2022 to April 28, 2022