Novel Dielectric Resonator-Based Microstrip Filters with Adjustable Transmission and Equalization Zeros

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Xuất bản năm:Electronics vol. 14, no. 13 (2025), p. 2557-2589
Tác giả chính: Espinosa-Adams, David
Tác giả khác: Llorente-Romano, Sergio, González-Posadas Vicente, Jiménez-Martín, José Luis, Segovia-Vargas, Daniel
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MDPI AG
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100 1 |a Espinosa-Adams, David  |u Signal Theory and Communications Department (DTSC), University Carlos III of Madrid (UC3M), Avenida de la Universidad 30, 28911 Leganés, Spain; daespino@ing.uc3m.es (D.E.-A.); sllorent@ing.uc3m.es (S.L.-R.) 
245 1 |a Novel Dielectric Resonator-Based Microstrip Filters with Adjustable Transmission and Equalization Zeros 
260 |b MDPI AG  |c 2025 
513 |a Journal Article 
520 3 |a This work presents a comprehensive technological study of dielectric resonator-based microstrip filters (DRMFs), encompassing the design, fabrication, and rigorous characterization of the <inline-formula>TE01δ</inline-formula> mode. Through systematic coupling analysis, we demonstrate filters featuring novel input–output coupling techniques and innovative implementations of both transmission zeros (4-2-0 configuration) and equalization zeros (4-0-2 configuration), specifically designed for demanding space and radar receiver applications, while the loaded quality factor (<inline-formula>QL</inline-formula>) and insertion loss do not match those of dielectric resonator cavity filters (DRCFs), our solution significantly surpasses conventional microstrip filters (MFs), achieving <inline-formula>QL</inline-formula>> 3000 compared to typical <inline-formula>QL</inline-formula>≈ 200 for coupled-line MFs in X-band. The fabricated filters exhibit exceptional performance as follows: input reflection (<inline-formula>S11</inline-formula>) below −18 dB (4-2-0) and −16.5 dB (4-0-2), flat transmission response (<inline-formula>S21</inline-formula>), and out-of-band rejection exceeding −30 dB. Mechanical tuning enables precise control of input–output coupling, inter-resonator coupling, cross-coupling, and frequency synthesis, while equalization zeros provide tailored group delay characteristics. This study positions DRMFs as a viable intermediate technology for high-performance RF systems, bridging the gap between conventional solutions. 
653 |a Insertion loss 
653 |a Cavity resonators 
653 |a Simulation 
653 |a Equalization 
653 |a Satellite communications 
653 |a Intermediate technology 
653 |a Bandwidths 
653 |a Radar receivers 
653 |a Design 
653 |a Measurement techniques 
653 |a Cross coupling 
653 |a Group delay 
653 |a Manufacturing 
653 |a Superhigh frequencies 
653 |a Electronic filters 
653 |a Configurations 
653 |a Microstrip devices 
700 1 |a Llorente-Romano, Sergio  |u Signal Theory and Communications Department (DTSC), University Carlos III of Madrid (UC3M), Avenida de la Universidad 30, 28911 Leganés, Spain; daespino@ing.uc3m.es (D.E.-A.); sllorent@ing.uc3m.es (S.L.-R.) 
700 1 |a González-Posadas Vicente  |u Ingeniería Audiovisual y Comunicaciones Department (DIAC), ETSI y Sistemas de Telecomunicación (ETSIyST), Polytechnic University of Madrid (UPM), Calle Nicolas Tesla, 28031 Madrid, Spain; vicente.gonzalez@upm.es (V.G.-P.); joseluis.jimenez@upm.es (J.L.J.-M.) 
700 1 |a Jiménez-Martín, José Luis  |u Ingeniería Audiovisual y Comunicaciones Department (DIAC), ETSI y Sistemas de Telecomunicación (ETSIyST), Polytechnic University of Madrid (UPM), Calle Nicolas Tesla, 28031 Madrid, Spain; vicente.gonzalez@upm.es (V.G.-P.); joseluis.jimenez@upm.es (J.L.J.-M.) 
700 1 |a Segovia-Vargas, Daniel  |u Signal Theory and Communications Department (DTSC), University Carlos III of Madrid (UC3M), Avenida de la Universidad 30, 28911 Leganés, Spain; daespino@ing.uc3m.es (D.E.-A.); sllorent@ing.uc3m.es (S.L.-R.) 
773 0 |t Electronics  |g vol. 14, no. 13 (2025), p. 2557-2589 
786 0 |d ProQuest  |t Advanced Technologies & Aerospace Database 
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