Single-layer dual-frequency reflective array antenna working in C wave band and X wave band
A reflect array antenna, C-band technology, applied to devices that make antennas work in different bands at the same time, antenna arrays that are powered on separately, antennas, etc. Problems such as poor beam symmetry, to achieve the effect of simple processing, reducing cross-polarization components, and widening bandwidth
Pending Publication Date: 2022-07-05
SHANXI UNIV
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Problems solved by technology
[0004] In recent years, research on single-layer structure reflectarray antennas has developed rapidly. For example, Thomas Smith proposed a dual-band Circularly polarized reflectarray antenna, using two split rings to realize the work of reflectarray antenna at 20GHz and 30GHz, but the symmetry of the beam on the measured pattern is poor; Zahra Hamzavi-Zarghani and Zahra Atlasbaf in the paper "A New Broadband Single -LayerDual-Band Reflectarray Antenna in X-and Ku-Bands" proposed a single-layer dual-frequency reflectarray antenna working in X and Ku bands. By etching slots on the square patch, changing the size of the slots can be used in X-band and Ku-Bands. Phase shift is achieved on the Ku band, but the linearity and smoothness of the phase shift curve are poor; R.Shamsaee Malfajani and B.AbbasiArand designed an orthogonally polarized The dual-frequency reflectarray antenna, the author loads the delay line on the circular ring and the circular patch to achieve phase shift, so as to work in the X and K bands at the same time, but the aperture efficiency of the antenna is affected by the feedforward mode of the reflectarray. and reduce
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[0032] like figure 1 As shown, a single-layer dual-frequency reflective array antenna working in the C-band and X-band includes a dual-frequency slot patch antenna 1 and an antenna reflection surface, and the dual-frequency slot patch antenna 1 is located above the antenna reflection surface; The array antenna adopts the feed mode of forward feed, that is, the slot patch antenna is vertically incident on the reflection array, and the distance between the feed source and the antenna reflection surface is 79.4mm.
[0033] like figure 2 As shown in the figure, the dual-frequency slot patch antenna 1 is used as the radiation feed source of the reflection array, which is composed of a dual-frequency slot patch 2 and a feed medium layer 3, and is fed by coaxial feeding. The slot patch 2 is attached to the bottom of the feed medium layer 3, and two symmetrical slots are etched on the dual-frequency slot patch 2. The feed medium layer 3 adopts a relative permittivity of 2.65 and a t...
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The invention belongs to the field of antennas in radio equipment, and particularly relates to a single-layer dual-frequency reflective array antenna working in a C wave band and an X wave band. The microstrip reflective array antenna is characterized in that a dual-frequency structure reflection unit of a printed double-square ring and an external square ring loading delay line is used as a reflection unit form of the microstrip reflective array antenna and is arranged on a first dielectric layer according to a certain interval. The reflective array antenna comprises a dual-frequency slot patch antenna serving as a reflective array radiation feed source and an antenna reflecting surface, and the reflecting surface is composed of a reflective array composed of dual-frequency structure reflecting units, a first dielectric layer, a second dielectric layer, an air layer and a metal ground layer. The double-frequency structure reflection unit is printed on one surface of the first dielectric layer of the printed circuit board.
Description
technical field [0001] The invention belongs to the field of antennas in radio equipment, in particular to a single-layer dual-frequency reflection array antenna working in C-band and X-band. Background technique [0002] In today's era, science and technology are developing rapidly, and the development of wireless communication is even more remarkable. Reflective array antenna is a new type of reflector antenna, which is composed of a series of reflector units. The phase shift characteristics of these reflector units can compensate the phase of electromagnetic waves incident from the feed source to the reflector surface, and finally achieve the effect of in-phase radiation of reflected waves. , so that the directivity and gain of the beam are greatly improved. [0003] Although the planar reflector array antenna has the advantages of small size and light weight, it also has the disadvantage of narrow operating bandwidth, which also limits its application range. For a comm...
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IPC IPC(8): H01Q21/06H01Q15/14H01Q19/10H01Q5/20H01Q5/30H01Q3/34
CPCH01Q21/065H01Q21/064H01Q15/14H01Q19/10H01Q5/20H01Q5/30H01Q3/34
Inventor刘宇峰杨志远陈新伟马润波张文梅
OwnerSHANXI UNIV