{"title":"Low-Loss Differential SPST Switch With Filtering Response and Common-Mode Suppression","authors":"Shipeng Zhao, Zhongbao Wang, Hongmei Liu, Mingming Gao, Shaojun Fang","doi":"10.1002/cta.4412","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>In this paper, a novel low-loss differential switch with filtering response and common-mode (CM) suppression is proposed for RF communication system. The single-pole single-throw (SPST) switch toggles ON and OFF states of the switch by controlling the voltage to PIN diodes loaded on the feeding transmission slotline. Microstrip-to-slotline transition provides intrinsic CM suppression for differential switch. The frequency selectivity is achieved by using modified dumb-belled slotline resonator, and the design process of its resonant operating mechanism is provided. The fabricated and measured differential SPST switch prototype exhibits bandpass filtering response with low insertion loss under the ON state. For the OFF state of the differential SPST switch, it can demonstrate wideband rejection characteristics. More importantly, CM noises can be effectively suppressed in this design.</p>\n </div>","PeriodicalId":13874,"journal":{"name":"International Journal of Circuit Theory and Applications","volume":"53 9","pages":"5054-5060"},"PeriodicalIF":1.6000,"publicationDate":"2024-12-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Circuit Theory and Applications","FirstCategoryId":"5","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/cta.4412","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}
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Abstract
In this paper, a novel low-loss differential switch with filtering response and common-mode (CM) suppression is proposed for RF communication system. The single-pole single-throw (SPST) switch toggles ON and OFF states of the switch by controlling the voltage to PIN diodes loaded on the feeding transmission slotline. Microstrip-to-slotline transition provides intrinsic CM suppression for differential switch. The frequency selectivity is achieved by using modified dumb-belled slotline resonator, and the design process of its resonant operating mechanism is provided. The fabricated and measured differential SPST switch prototype exhibits bandpass filtering response with low insertion loss under the ON state. For the OFF state of the differential SPST switch, it can demonstrate wideband rejection characteristics. More importantly, CM noises can be effectively suppressed in this design.
期刊介绍：
The scope of the Journal comprises all aspects of the theory and design of analog and digital circuits together with the application of the ideas and techniques of circuit theory in other fields of science and engineering. Examples of the areas covered include: Fundamental Circuit Theory together with its mathematical and computational aspects; Circuit modeling of devices; Synthesis and design of filters and active circuits; Neural networks; Nonlinear and chaotic circuits; Signal processing and VLSI; Distributed, switched and digital circuits; Power electronics; Solid state devices. Contributions to CAD and simulation are welcome.
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