Zobrazeno 1 - 10
of 3 735
pro vyhledávání: '"Hybrid coupler"'
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 24, Iss 3, Pp 243-253 (2024)
This article presents a transmit/receive switch that utilizes a broadband microstripline hybrid coupler. The proposed switch is suitable for application in both 3T and 7T magnetic resonance imaging. It operates within three frequency ranges, covering
Externí odkaz:
https://doaj.org/article/8243dfdcd1a84fd59ea7e0948c12ec79
Autor:
Zahra Akhoondmahdi, Ahmad Bakhtafrouz
Publikováno v:
IEEE Access, Vol 12, Pp 134926-134936 (2024)
Microwave devices using printed gap waveguide technology, such as inverted microstrip gap waveguide (IMGW), are essential for millimeter-wave applications. In this article, a new wideband monopulse comparator composed of four wideband rat-race hybrid
Externí odkaz:
https://doaj.org/article/ae415eb1e6464a5983560573185683cd
Autor:
Youngje Sung
Publikováno v:
IEEE Access, Vol 12, Pp 123835-123842 (2024)
In this study, a dual-feed polarization diversity antenna with a broadside or conical radiation pattern is proposed for fifth-generation (5G)-NR applications. The antenna’s design incorporates a radiator created using a circular slot, segmented int
Externí odkaz:
https://doaj.org/article/7e35db60c1ab4210ac00765e1c7290b3
Akademický článek
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Publikováno v:
IEEE Journal of Microwaves, Vol 3, Iss 4, Pp 1199-1211 (2023)
This article provides for the first time a detailed discussion of the optimal assignment of adjacent output phase differences in terms of matrix performance out of all possible combinations in generalized one-dimensional parallel switching matrices w
Externí odkaz:
https://doaj.org/article/99e2f63eb6e54b22972f4829bb268c3c
Autor:
Sobhan Roshani, Salah I. Yahya, Maher Assaad, Muhammad Akmal Chaudhary, Fawwaz Hazzazi, Yazeed Yasin Ghadi, Sarmad M. Ali, Saeed Roshani
Publikováno v:
Symmetry, Vol 15, Iss 12, p 2149 (2023)
In this paper, a new structure of the quadrature hybrid coupler (QHC) with compact size is proposed using capacitive composite lines and meandered open stubs. The proposed coupler works at 1.6 GHz with a 0.4 GHz bandwidth, which shows 25% fractional
Externí odkaz:
https://doaj.org/article/abdb0d5205e14d84b80442bc3c4d82e2
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 4, Pp 452-458 (2022)
This paper introduces a miniaturized Butler matrix design method using a folded structure. The Butler matrix was fabricated in multi-layers using low-temperature co-fired ceramics (LTCC) and designed to operate at 28 GHz. The conventional one-plane B
Externí odkaz:
https://doaj.org/article/7f38fd57fc5d46bb8899deb06ea3b5a3
Autor:
Young Kim
Publikováno v:
Journal of Electromagnetic Engineering and Science, Vol 22, Iss 2, Pp 95-102 (2022)
An analysis method for a multi-section rat-race hybrid coupler with a large bandwidth is presented. The proposed coupler has only a few additional microstrip lines compared to a single-section coupler. A complete analysis method is derived and valida
Externí odkaz:
https://doaj.org/article/7dc9179ef86447f1aa21a4e3bb7b9ac6
Autor:
Mohamed Atef Abbas, Mehmet Faruk Cengiz, A. M. M. A. Allam, Diaa E. Fawzy, Hadia M. Elhennawy, Mohamed Fathy Abo Sree
Publikováno v:
IEEE Access, Vol 10, Pp 129781-129790 (2022)
A novel circular reconfigurable metasurface (MS) based compact ultra-wideband (UWB) hybrid coupler is developed for Ku-band applications. The coupler is developed using the substrate-integrated gap waveguide (SIGW) technology. The coupler structure c
Externí odkaz:
https://doaj.org/article/58c871516fd3498f94af43687dc8c069
Autor:
Son Xuat Ta, Van Cuong Nguyen, Bang-Tam Nguyen-Thi, Thai Bao Hoang, An Ngoc Nguyen, Khac Kiem Nguyen, Chien Dao-Ngoc
Publikováno v:
IEEE Access, Vol 10, Pp 21883-21891 (2022)
This paper presents a dual-circularly polarized (dual-CP) antenna with simple configuration, low-profile, and wide bandwidth. Its primary radiating element is an aperture-coupled patch loaded with a stacked patch for a wide operational bandwidth. A s
Externí odkaz:
https://doaj.org/article/165976372f5a41a7ac42b14fa15699fb