Microwave Bandpass Filters for Wideband Communications

Abstract

This paper presents a compilation of important review in the development of microwave filters for wideband technology used in previous years. The major research work for each year is reviewed. Several wideband filters based on the planar and non-planar circuits are compared and examined in order to propose a new topology of wideband filter using Suspended Stripline Structure (SSS). More importantly, this new proposed structure will be integrated with the Defects Ground Structure (DGS) to form an advanced hybrid system for wideband applications. This system will produce the band-pass and band-stop responses simultaneously in order to discriminate between the desired and undesired signals in the wideband spectrum. The proposed system outlined in this paper, featuring new innovation in hybrid structure as well as providing an insight of the direction of future research works. The contribution of this study is useful for applications where the reduction of physical volume is very important, while maintaining its good performance such as Ultra-Wideband (UWB), commercial radar as well as the wideband warfare receiver. As for future works, integration techniques between the UWB filter and DGS will be designed and analyzed to form an advanced new microwave device in order to produce bandpass and bandreject response in the same structure simultaneously.

Compact differential bandpass filter with a narrow notched band using APCL structure suitable for UWB application

“…1 and 2(a) illustrate a configuration of a SPCL for the input and output, respectively. The exact equivalent circuit of one section of parallel coupled line includes two series open -ended stubs which are cascaded through a connecting line, have already been proposed in the previous literatures [25], whereas equivalent models for SPCL are derived for the first time and shown in Figs. 1 and 2(b).…”

Riset Band Pass Filter Mikrostrip – State of the Art

“…Hasil kerja para peneliti dan insinyur terdokumentasikan dalam banyak laporan. Publikasi [1][2][3][4][5][6][7][8] menunjukkan pilihan buku dalam bidang teknik filter pada frekuensi tinggi dan gelombang mikro. Tulisan ini membahas tutorial perancangan bandpass filter, dengan memulai menggunakan metoda insertion loss, yang memanfaatkan penggunakan fungsi aproksimasi seperti pendekatan Butterworth, Chebyshev dan Elliptis.…”

Uwb-BPF With Application Based Triple Notches and Suppressed Stopband

“…2(b). The resonant modes of this MMR are evaluated from its input admittance (Y in ), at the left end looking into the right [11]:…”