Radiation linear array and design method thereof

Abstract

The embodiment of the invention provides a radiation linear array and a design method thereof. The radiation linear array is arranged on the front surface of a dielectric substrate, is correspondinglyconnected with the output end of the power divider and is fed by the power divider, the radiation linear array comprises an external connection end located in the middle and connected with the outputend of the power divider, and a plurality of array elements which are linearly arranged and symmetrically arranged at the two sides of the external connection end. The array elements are the same inshape and size, one side, close to the external end, of each array element is also connected with an impedance conversion section, and one side, far away from the external end, of each array element is connected to an impedance conversion section connected with the adjacent array element far away from one side of the external end through a feeder line. The impedance conversion section connected with the array element adjacent to the external end is connected to the external end, and the area of each impedance conversion section is gradually increased from the middle of the radiation linear array to the two ends symmetrically. According to the embodiment, the effective radiation area of the array elements is ensured, the occupied area of the radiation linear array is reduced, and the miniaturization of products is facilitated.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of microstrip array antennas, in particular to a radiation linear array and a design method thereof. Background technique [0002] The microstrip array antenna generally includes a radiation line array and a power divider for feeding each radiation line array, and each radiation line array includes a plurality of array elements and a feeder line connecting each array element. [0003] The existing radiating linear array realizes the effective current weight assignment of each array element, thereby controlling the side lobe level of the microstrip array antenna, especially the suppression of the first side lobe level. There are mainly two schemes in antenna design, among which, the first one is to connect multiple array elements with the same shape and size on the same side of the feeder line to connect with the feeder line, and then adjust the matching joints at the connection between ...

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Problems solved by technology

There are mainly two schemes in antenna design, among which, the first is to connect multiple array elements with the same shape and size to the feeder on the same side of the feeder, and then adjust the matching joints at the connection between each array element and the feeder. However, this scheme increases the size of the radiation line array, which is not conducive to the miniaturization of the product; the second is to directly connect multiple array elements in series through the feeder line, and then adjust the size of each array element In order to realize the current weighted assignment, however, this scheme reduces the effective radiation area of ​​the array element, and the gain of the overall antenna will also be reduced

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