Analog/RF Circuits: Latest Advances and Prospects

A special issue of Electronics (ISSN 2079-9292). This special issue belongs to the section "Circuit and Signal Processing".

Deadline for manuscript submissions: closed (15 March 2025) | Viewed by 1251

Special Issue Editors


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Guest Editor
School of Electro-mechanical Engineering, Xidian University, Xi’an 710071, China
Interests: RF components and wireless communication technology
School of Electro-Mechanical Engineering, Xidian University, Xi’an 710071, China
Interests: microwave measurement technology

Special Issue Information

Dear Colleagues,

Analog and RF circuits have very important applications in (1) communication systems, including mobile communication, satellite communication and wireless sensor network systems; (2) consumer electronics systems such as smartphones, tablets, audio equipment and smart home; (3) industrial and medical fields; (4) energy and environment monitoring, etc. With the rapid development of communications and wireless technologies, many new analog and RF circuit designs are being developed. This Special Issue aims to encourage potential contributors to explore and share their original research works pertaining to these subjects. We invite prospective authors to contribute their recent research works for consideration, especially in the following topics:

  • RF filtering components and filtering integrated circuits;
  • RF antennas;
  • Other RF components and systems;
  • Wireless monitoring systems;
  • Consumer electronics systems;
  • Test and measurement techniques.

Dr. Jiankang Xiao
Dr. Wei Zhao
Guest Editors

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Keywords

  • RF components and systems
  • antennas
  • wearable circuits and systems
  • wireless monitoring systems
  • microwave measurement technique

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Published Papers (1 paper)

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Research

12 pages, 4100 KiB  
Article
Dual-Band Gysel Filtering Power Divider with a Frequency Transform Resonator and Microstrip/Slotline Phase Inverter
by Yongping Xu, Chaoyi Sun, Zhe Chen, Huayan Sun, Zeyu Huang, Runfeng Tang, Jinxiao Yang and Weilin Li
Electronics 2025, 14(1), 61; https://doi.org/10.3390/electronics14010061 - 26 Dec 2024
Viewed by 727
Abstract
This paper presents a novel dual-band Gysel filtering power divider (FPD) with an excellent isolation performance and a significantly wide isolation bandwidth. Although Gysel power dividers have been extensively studied in the field of radio frequency (RF), the integration of filtering functionality and [...] Read more.
This paper presents a novel dual-band Gysel filtering power divider (FPD) with an excellent isolation performance and a significantly wide isolation bandwidth. Although Gysel power dividers have been extensively studied in the field of radio frequency (RF), the integration of filtering functionality and the expansion of isolation bandwidth remain challenging. The proposed design addresses these challenges by incorporating frequency transform resonators (FTRs) and a microstrip/slotline (M/S) phase inverter into the classic Gysel topology. The FTR is directly connected to the output port to provide a dual-band response, enabling the Gysel FPD to operate without external coupling between the resonator and the port. The M/S phase inverter is a dual-layer 180° phase shifter, designed to replace the conventional 180° transmission lines loaded between the two isolation resistors of the Gysel FPD, achieving a wide isolation bandwidth. To validate the proposed design method, a dual-band Gysel FPD with center frequencies of 1.4 GHz and 1.7 GHz is designed, fabricated, and measured. The measured results show that the in-band return loss is greater than 20 dB, and the in-band insertion loss is about 0.6 dB, and the amplitude and phase imbalance characteristics are good. In addition, the 20 dB-isolation fractional bandwidth achieves 97% (0.78–2.25 GHz). The measured results show excellent agreement with the simulation results, validating the effectiveness of the proposed design methodology. Full article
(This article belongs to the Special Issue Analog/RF Circuits: Latest Advances and Prospects)
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