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Journal Antennas №4 for 2011 г.
Article in number:
Millimeter-Wave Antenna Arrays and Phased Antenna Arrays
Keywords: phased antenna arrays millimeter-wave
Authors:
I. S. Baklashov, K. K. Klionovski
Abstract:
The article deals with the scope and design of modern phased array antennas and antenna arrays for millimeter waves. Currently, millimeter-wave technology has practical application in industry and in military field. Millimeter arrays used in radar stations, wireless systems, control systems for the traffic situation. We consider design of the waveguide, waveguide - slot antenna arrays. Investigate their characteristics - the radiation pattern, gain, and efficiency. Described embodiments of the slot antenna arrays based on rectangular, radial and plane-parallel waveguides. Array antennas based on microstrip distribution system characterized by a low efficiency, compared to the waveguide structure. Reviewed the design and characteristics of the radiation reflective microstrip antenna arrays. On the basis of these structures can be implemented as a mechanical and electrical beam scanning in the application of semiconductor or ferroelectric phase shifters. Marked with reflective design of antenna arrays to work with the signals of both linear and circular polarization. We consider the phased array antenna with the electric sector scan ± 25°. Described the structure of the radiating elements. This phased antenna array is working with the signals of circular polarization. To control the position of the beam, in this lattice is used ferrite phase shifters with phase increments 45°. The article examines the structure of multi-beam waveguide - a slot antenna array with beamforming schemes of two types - the matrix and the optical. Optical scheme of beamforming provides higher stability of beams with varying frequency. The main problem of creating millimeter-wave arrays is to achieve high efficiency.
Pages: 20-30
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