Structure of dual-frequency broadband microstrip antenna

Abstract

A structure of a double-frequency broadband microstrip antenna comprises a printed board, a base, a first electric connector and a second electric connector. A first radiation element and a second radiation element are arranged on the printed board; the diameters of the first radiation element and the second radiation element are different; the printed board is arranged on the base, and the printed board and the base form two independent air cavities, namely a first air cavity and a second air cavity; the first radiation element is located at the first air cavity, and the second radiation element is located at the second air cavity; a probe of the first electric connector is connected with the first radiation element and is used for transmitting signals to the first radiation element; and a probe of the second electric connector is connected with the second radiation element and is used for transmitting signals to the second radiation element. The two radiation elements with different sizes are arranged on the printed board, the two independent air cavity structures are formed between the printed board and the base, the two radiation elements with different sizes are used for realizing different frequencies, and the two air cavities can realize the broadband of different microstrip antennas.

Description

technical field [0001] The invention relates to the technical field of antennas, in particular to a structure of a dual-frequency broadband microstrip antenna. Background technique [0002] Microstrip antennas have been widely used because of their small size, light weight, and ease of fabrication. However, with the rapid development of radio technology, the requirements for antennas are getting higher and higher, and antennas with dual frequency points and broadband are required. Therefore, Dual-band microstrip antennas have broad application space. The traditional microstrip antenna has only one double-layer printed board. Due to its inherent structural characteristics, it can only work at a single frequency point and has a narrow bandwidth, which cannot meet engineering requirements and greatly limits its application. At present, it can realize The dual-frequency microstrip antenna is designed for multi-layer printed board superposition. [0003] For the design technolo...

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Problems solved by technology

The traditional microstrip antenna has only one double-layer printed board. Due to its inherent structural characteristics, it can only work at a single frequency point and has a narrow bandwidth, which cannot meet engineering requirements and greatly limits its application. At present, it can realize The way of dual-band microstrip antenna is superposition design of multi-layer printed board

[0003] For the design technology that adopts multi-layer printed board stacking to achieve dual-frequency points and wide-band antenna, usually the magnetic field pattern will appear asymmetrical, the electric field pattern will appear concave in the side-fire direction, and the technical indicators of the antenna will be affected. Great impact on the working environment and poor stability

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