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
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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 impe
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