Microstrip EHF Butler Matrix Design and Realization
نویسندگان
چکیده
منابع مشابه
Microstrip Butler matrix design and realization for 7 T MRI.
This article presents the design and realization of 8 × 8 and 16 × 16 Butler matrices for 7 T MRI systems. With the focus on low insertion loss and high amplitude/phase accuracy, the microstrip line integration technology (microwave-integrated circuit) was chosen for the realization. Laminate material of high permittivity (ε(r) = 11) and large thickness (h = 3.2 mm) is shown to allow the best t...
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The aim of this investigation is to realize a Butler matrix for a multibeam base station antenna dedicated to a U MTS application; this matrix has been realized with microstrip technology. The antenna associated with this application is a network of patches distributed in a tree structure and fed by electromagnetic coupling. The patch distribution structure used in this experiment allowed a g r...
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Abstract—This paper describes a method to estimate the fixed phase shifts of the Microstrip 8×8 Butler Matrix, realized in one substrate board which is designed and fabricated for our 7-Tesla Magnetic Resonance Imaging (MRI) system. This method is based on a global optimization problem to minimize a cost function including a variety of 64 functions as a function of the fixed phase shifts of the...
متن کاملA Design of Compact Ultra Wideband Coupler for Butler Matrix
A design of 3 dB compact ultra wideband (UWB) coupler for a 4 × 4 Butler Matrix, which is operating between 3 and 11 GHz frequency range, is presented in this paper. The proposed design uses multilayer technology that allows having a compact and broad bandwidth coupler. The design uses elliptically shaped broadside coupled strips and a slot created in a common ground plane of two dielectric sub...
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Microstrip realization of beam forming network integrated with dual-band antenna array on silicon substrate is presented. Design and implementation of broad band topologies of hybrid and phase shifter are discussed and further integrated to realize wideband 4× 4 Butler matrix. Proposed wideband Butler matrix is used to realize single-band and dual band antenna architectures on silicon substrate...
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ژورنال
عنوان ژورنال: ETRI Journal
سال: 2005
ISSN: 1225-6463
DOI: 10.4218/etrij.05.1005.0012