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Journal Antennas №4 for 2014 г.
Article in number:
Experience's generalization of components development for upper segment of mm-band phased array antennas with ferrite phase shifters
Keywords: phased array antenna radiator Faraday phase shifter W-band
Authors:
E. V. Komissarova - Senior Teacher, Department of Radioelectronic Systems and Devices, Bauman Moscow State Technical University. E-mail: mc_ken@list.ru
V. M. Krekhtunov - Ph.D. (Eng.), Associate Professor, Department of Radioelectronic Systems and Devices, Bauman Moscow State Technical University. E-mail: krehtunov@bk.ru
Abstract:
The research results of the development of phased array antennas of short-wave segment of the millimeter band (W-band) are considered. The arrays are based on integration of Faraday ferrite phase shifter and waveguide-dielectric radiator. Performance parameters of antennas and the devices specific to the W-band are analyzed. This includes fabrication technological aspects, automation and complexity of layout, such as the output wires of the control system of beam beyond the opening flat multi-element positioning. Design of the waveguide ferrite Faraday's shifters with magnetic memory elements is proposed which can be implemented in the short-wave segment of the millimeter waveband. The drawback of usually implemented scheme of waveguide ferrite Faraday's shifters includes ferrite rods with conductive coating on their side surfaces, which leads to low performance and excessive control energy requirements. Proposed scheme is based on open ferrite rod and is free of those lacks. It is characterized by extremely high performance and reduced control energy which is determined only by the volume of ferrite rod and a ferrite staples of magnetic core and their parameters. Theoretical and experimental researches allowed to produce W-band reflective elements whose cross-section allows assembly of PAA with electrical beam scanning. Beam - 3dB-width is 4, scanning sector is ±15° in both planes. Beam positioning time does not exceed 10 μs, and control energy is below 10 μJ.
Pages: 38-42
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