Integrated dual-frequency printed single dipole antenna

Abstract

An integrated type double frequency printing single dipole antenna mainly including, a microwave base plate, a first double frequency single dipole antenna, a second double frequency single dipole antenna base plate and an earthing surface. The base plate includes a first surface and a second surface, the first and second double frequency single dipole antenna is arranged on the first surface of the base plate, and is stimulated by a first or second feed in port through a first or second microstrip feed in wire. each of the first and second double frequency single dipole antenna includes a first horizontal radiating metal wire, a second horizontal radiating metal wire and a vertical radiating metal wire. One end of the vertical radiating metal wire is a feed in point connected to the first or the second microstrip feed in wire. The earthing surface is arranged on the second surface of the base plate, wherein the earthing surface includes a primary earthing surface and a projecting earthing surface extending between the first and second antenna.

Description

technical field [0001] The present invention relates to an antenna system, and more to an integrated dual-frequency printed single dipole antenna applied to a wireless local area network. Background technique [0002] With the vigorous development of wireless communication, everyone has higher and higher requirements for communication quality. Today's products not only pay attention to thinness and shortness, but also have good and stable communication quality. However, the multi-path attenuation effect significantly reduces the communication quality of the system. . Therefore, it is necessary to use antenna diversity to overcome the multipath fading effect of the wireless communication system. [0003] Generally speaking, the current common antenna diversity is achieved by frequency diversity, time diversity or spatial diversity. In frequency diversity, the system switches between different frequencies to overcome multipath fading effects. In a time diversity system, sig...

AI Technical Summary

Problems solved by technology

[0005] Although U.S. Patent No. 5,990,838 has provided a spatial diversity (spatial diversity) antenna system to improve the multipath attenuation effect of the wireless communication system, but this design is only suitable for single-band operation, and the antenna system has two feed ports It is still impossible to obtain better isolation (its isolation S21 is higher than -20dB)

Furthermore, U.S. Patent No. 5,990,838 needs to use a multi-layer printed substrate, which requires complex structures and high manufacturing costs.

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