A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges

Al-Yasir, Yasir I. A.; Ojaroudi Parchin, Naser; Abdulkhaleq, Ahmed M.; Bakr, Mustafa S.; Abd-Alhameed, Raed A.

Abstract

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.

Citation

Al-Yasir, Y. I. A., Ojaroudi Parchin, N., Abdulkhaleq, A. M., Bakr, M. S., & Abd-Alhameed, R. A. (2020). A Survey of Differential-Fed Microstrip Bandpass Filters: Recent Techniques and Challenges. Sensors, 20(8), Article 2356. https://doi.org/10.3390/s20082356

• Journal Article Type: Article
• Acceptance Date: Apr 14, 2020
• Online Publication Date: Apr 21, 2020
• Publication Date: 2020
• Deposit Date: Feb 21, 2022
• Publicly Available Date: Feb 21, 2022
• Journal: Sensors
• Electronic ISSN: 1424-8220
• Publisher: MDPI
• Peer Reviewed: Peer Reviewed
• Volume: 20
• Issue: 8
• Article Number: 2356
• DOI: https://doi.org/10.3390/s20082356
• Keywords: differential-fed filter; microstrip; RF; MW; 4G; 5G; bandpass
• Public URL: http://researchrepository.napier.ac.uk/Output/2840212