4-Pole Tunable Absorptive Bandstop Filters Using Folded Coupled-Lines With an Inductor
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DOI: 10.1109/access.2022.3221461
Abstract: The ever-growing field of wireless communication requires efficient radio frequency transceivers with tunable absorptive bandstop filters that can prevent the interference of out-of-band and reflected signals. This paper presents 4-pole tunable absorptive bandstop filters using… read more here.
Keywords: bandstop; bandstop filters; absorptive bandstop; pole tunable ... See more keywords
A Symmetrical Broadband Tight-Coupled Directional Coupler With High Directivity Using Three-Folded-Coupled Lines
Sign Up to like & getrecommendations! Published in 2022 at "IEEE Transactions on Circuits and Systems II: Express Briefs"
DOI: 10.1109/tcsii.2022.3169160
Abstract: In this brief, a novel symmetrical broadband tight-coupled directional coupler with high directivity using three-folded-coupled lines is proposed and implemented. The directional coupler is consisted of two simple coupled lines and two three-folded-coupled (TFC) lines,… read more here.
Keywords: coupler; directivity; tex math; inline formula ... See more keywords
A Coupler With Simultaneously Tunable Phase, Frequency and Coupling Coefficient
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DOI: 10.1109/tcsii.2022.3198637
Abstract: A novel coupled-line coupler with tunable frequency, coupling coefficient and phase difference is proposed with a reduced number of varactor diodes. The proposed coupler consists of two weakly coupled lines cascaded using varactors and two… read more here.
Keywords: coupler; frequency coupling; frequency; coupling coefficient ... See more keywords