Microstrip array antenna and microstrip power divider thereof

Abstract

The embodiment of the invention provides a microstrip array antenna and a microstrip power divider thereof. The microstrip power dividers are arranged on the front surface of the dielectric substrateand are connected with the radiation linear arrays in a one-to-one correspondence manner; the antenna comprises a main feeder line, and an input end and a plurality of output ends which are arranged on the main feeder line, each path of output end is correspondingly connected with one radiation linear array and feeds the connected radiation linear array; one end of the main feeder serves as an input end, output ends are sequentially formed from the input end to the tail end of the main feeder, the output ends are parallel to one another and intersect with the main feeder, and included angles between the output ends and sections from the input end to the output ends of the main feeder are acute angles or obtuse angles. According to the design principle of an antenna, the included angle between each output end and the section between the input end of the main feeder line and each output end is an acute angle or an obtuse angle, so any two adjacent output ends generate a constant phase difference, the feeder line of each output end does not need to be completed; the structure is simpler, and the design cost and the antenna loss are lower.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of antennas, in particular to a microstrip array antenna and a microstrip power splitter thereof. Background technique [0002] Existing microstrip array antennas usually include a dielectric substrate, a microstrip power splitter and a plurality of radiation line arrays that are arranged on the front of the dielectric substrate, and each output end of the microstrip power splitter is connected to a radiation line array and feeds the connected radiating linear array. In order to realize beam forming and main beam deflection, the existing microstrip array antenna usually sets the feeder at the output end of the microstrip power divider as a curved shape, and changes the feeder at different output ends The bending length of each output end is to achieve a constant phase difference at each output end; however, in the existing design, in order to consider the wiring layout and the constant ...

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Problems solved by technology

[0002] Existing microstrip array antennas usually include a dielectric substrate, a microstrip power splitter and a plurality of radiation line arrays that are arranged on the front of the dielectric substrate, and each output end of the microstrip power splitter is connected to a radiation line array and feeds the connected radiating linear array. In order to realize beam forming and main beam deflection, the existing microstrip array antenna usually sets the feeder at the output end of the microstrip power divider as a curved shape, and changes the feeder at different output ends The bending length of each output end is to achieve a constant phase difference at each output end; however, in the existing design, in order to consider the wiring layout and the constant phase difference at each output end, the feeder line at each output end is bent too long, occupying an area, and increasing the size of the entire antenna , which also increases the cost; in addition, because the feeder is too long and the bending is complicated, the loss and unnecessary radiation of the antenna will also be greatly increased

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