Multi-channel antenna

Abstract

The multi-waveband antenna includes tuner, earthing element, circuit shorter and feeding lines. The tuner provides the first resonant mode and the second resonant mode corresponding to the first waveband and the second waveband separately. The earthing element includes the main earthing surface, the first earthing regulator and the second earthing regulator. The main earthing surface includes the first earthing point corresponding to the first resonant mode and the second earthing point corresponding to the second resonant mode, the first earthing regulator is used in regulating impedance matching of the first resonant mode and the bandwidth of the first waveband and the second earthing regulator is used in regulating impedance matching of the second resonant mode and the bandwidth of the second waveband. The circuit shorter has one end connected to the tuner, the other end to the second earthing point and feeding points connected to the feeding lines.

Description

technical field [0001] The present invention relates to a multi-band antenna, and in particular to an integrated multi-band antenna which utilizes a single resonant structure to generate multi-band electromagnetic waves. Background technique [0002] In a wireless communication system, an antenna is a window used to transmit and receive electromagnetic waves, and its electrical characteristics are good enough to affect the quality of communication. Generally, when an antenna transmits and receives signals, it often produces multi-path (Multi-path) interference. The effective countermeasure is to use the so-called antenna diversity (Antenna Diversity) method. When the system is used in a single frequency range, two single-frequency antennas can be used to form an antenna diversity system. For example: the 5GHz frequency band used by WLAN802.1la or the 2.4GHz frequency band used by WLAN802.11b usually use a master (Master) antenna and a slave (Slave) antenna to achieve the pu...

AI Technical Summary

Problems solved by technology

Therefore, the electromagnetic wave transmission efficiency in this high frequency band is often poor

For the frequency ranges required for WLAN802.11a / b / g to operate: 2.4-2.4835GHz, 5.15-5.35GHz, 5.47-5.725GHz, and 5.725-5.825GHz, this method is obviously not applicable, because each frequency band in the 5GHz frequency range None of them have a multiplier relationship, and their overall bandwidth is quite large (1GHz)

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