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Media type:
E-Article
Title:
A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges
Contributor:
Al-Yasir, Yasir I. A.;
Ojaroudi Parchin, Naser;
Abdulkhaleq, Ahmed M.;
Bakr, Mustafa S.;
Abd-Alhameed, Raed A.
Published:
MDPI AG, 2020
Published in:
Sensors, 20 (2020) 8, Seite 2356
Language:
English
DOI:
10.3390/s20082356
ISSN:
1424-8220
Origination:
Footnote:
Description:
Differentially driven devices represent a highly promising research field for radio frequency (RF), microwave (MW), and millimeter-wave (mmWave) designers and engineers. Designs employing differential signals are essential elements in low-noise fourth-generation (4G) and fifth-generation (5G) communications. Apart from the conventional planar MW components, differential–fed balanced microstrip filters, as promising alternatives, have several advantages, including high common-mode rejection, low unwanted radiation levels, high noise immunity, and wideband harmonic suppression. In this paper, a comprehensive and in-depth review of the existing research on differential-fed microstrip filter designs are presented and discussed with a focus on recent advances in this research and the challenges facing the researchers. A comparison between different design techniques is presented and discussed in detail to provide the researchers with the advantages and disadvantages of each technique that could be of interest to a specific application. Challenges and future developments of balanced microstrip bandpass filters (BPFs) are also presented in this paper. Balanced filters surveyed include recent single-, dual-, tri-, and wide-band BPFs, which employ different design techniques and accomplish different performances for current and future wireless applications.