Broadband dual-frequency dual-circular-polarization microstrip antenna array with small frequency ratio
A microstrip antenna, dual circularly polarized technology, which is applied in the directions of individually powered antenna arrays, antenna arrays, independent antenna unit combinations, etc. Processing and other problems, to achieve the effect of easy processing, good radiation characteristics and low cost
Inactive Publication Date: 2017-01-04
NANJING UNIV OF SCI & TECH
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[0003] Document 1 (A new design of dual band dual circular-polarized micro-stripantenna array, in Proc.IEEE ICMTCE, Beijing, China, May.2011, pp.203–205.) discloses a dual-band dual circular-polarized micro-stripantenna array 2×2 microstrip antenna array, working at 2.0GHz and 2.2GHz, but the antenna array and feed network are distributed at different levels, which makes the processing process complicated and the cost increased
Document 2 (Dual-band and dual-circularly polarized shared-aperture array antennas with single-layer substrate, IEEE Trans. Antennas Propag., vol.64, no.1, pp.109–116, Jan.2016.) discloses a A single-feed dual-frequency dual-circularly polarized microstrip antenna array, but due to the limitation of its single-port feed, it is impossible to achieve a dual-frequency antenna array with a small frequency ratio
There are other stacked microstrip antennas based on the multi-layer dielectric board structure. The multi-layer dielectric board structure can achieve isolation between different frequency bands, but its processing technology is complicated, which is not conducive to processing and high cost
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[0035] combine figure 1 , figure 2 with image 3 , a microstrip antenna array with broadband dual-frequency dual-circular polarization and small frequency ratio, including a first sub-array, a second sub-array, a third sub-array and a fourth sub-array, and the four sub-arrays are all arranged on a dielectric substrate 11 surface; the first subarray and the third subarray work at a first working frequency, the second subarray and the fourth subarray work at a second working frequency, and the first working frequency and the second working frequency are different;
[0036] Each sub-array includes three units, and each unit in the first sub-array and the third sub-array includes the first microstrip line 5, the second microstrip line 7, the third microstrip line 8, the first quarter Wavelength impedance converter 6, the first square microstrip antenna 1, the second square microstrip antenna 2, the first narrow slot 3 and the second narrow slot 4; the first quarter wavelength i...
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Abstract
The invention discloses a broadband dual-frequency dual-circular-polarization microstrip antenna array with a small frequency ratio. The broadband dual-frequency dual-circular-polarization microstrip antenna array comprises a dielectric substrate 11, and 2N+1 subarrays arranged on the dielectric substrate 11, wherein 2N subarrays with an odd number work at a first working frequency; 2N subarrays with an even number work at a second working frequency; N is a natural number; and the subarrays of two working frequencies are alternately arranged. By a distributed parameter microstrip line design, the broadband dual-frequency dual-circular-polarization microstrip antenna array with the small frequency ratio has the advantages of being of a single-layer plane structure, easy to process, easy to integrate, easy to array, low in cost, low in loss, good in radiation characteristic, high in stability, suitable for mass production and the like, and can be used for communication systems of satellite communication and the like.
Description
technical field [0001] The invention relates to a microstrip antenna array, in particular to a microstrip antenna array with wideband, dual-frequency, double-circular polarization and small frequency ratio. Background technique [0002] In recent years, with the rapid development of satellite communications, circularly polarized antennas have attracted widespread attention due to their good suppression of multipath effects and high polarization isolation between transmit and receive. There is also an increasing need for polarized antenna arrays. [0003] Document 1 (A new design of dual band dual circular-polarized micro-stripantenna array, in Proc.IEEE ICMTCE, Beijing, China, May.2011, pp.203–205.) discloses a dual-band dual circular-polarized micro-stripantenna array The 2×2 microstrip antenna array works at 2.0GHz and 2.2GHz, but the antenna array and the feeding network are distributed on different levels, which makes the processing process complicated and the cost incr...
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Login to View More IPC IPC(8): H01Q1/50H01Q1/38H01Q21/00H01Q21/06H01Q21/30
CPCH01Q21/0075H01Q21/065H01Q21/30
Inventor 陈峤羽韩思琪张金栋冯敏吴文冯普祥吴翠翠
Owner NANJING UNIV OF SCI & TECH