Multi-band antennas and communication equipment

Abstract

The embodiment of the invention discloses a multi-frequency antenna and communication equipment, belonging to the technical field of communication. The multi-frequency antenna includes a reflector, at least one high-frequency unit and at least one low-frequency unit, each high-frequency unit includes a balun structure, a coupling structure and a radiation arm structure, the balun structure includes two balun substructures, and the coupling structure includes Two coupling substructures, the radiation arm structure includes two radiation arms, in which: the high frequency unit and the low frequency unit are installed on the reflector; each coupling substructure is electrically connected to a balun substructure and a radiation arm; the coupling A substructure for transmitting signals with frequencies above a preset threshold and blocking signals with frequencies below a preset threshold. With the present invention, due to the existence of the coupling structure, the frequency of the electromagnetic waves radiated by the equivalent monopole antenna is higher than the preset threshold, avoiding the working frequency band of the low-frequency unit, and furthermore, the equivalent monopole antenna does not It will cause interference to the signal radiated and transmitted by the low frequency unit.

Description

Technical field [0001] The present application relates to the field of communication technology, and more particularly to a multi-frequency antenna and a communication device. Background technique [0002] The multi-frequency antenna is also an antenna having a plurality of operating bands, including reflecting plates, at least one high frequency unit, and at least one low frequency unit, wherein each high frequency unit comprises a Bragon structure and a radiation arm structure. The radiation arm structure is a symmetrical arrangement of two radiation arms, and the ends of the two radiation arms are electrically connected to the Baren structure, and the radiation arm structure is used to radiate electromagnetic waves to the outside of the radiation; BALANCE-UNBALANCE, BALUN It is the transliteration of the "balanced unbalanced converter" abbreviation, which is a device for signaling the radiation arm structure and cable of the antenna. Among them, the distance between the Garlen...

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Problems solved by technology

[0004] When the low-frequency unit is working, the above-mentioned equivalent monopole antenna will generate a low-frequency induced current under the influence of the electromagnetic wave of the low-frequency unit. The low-frequency induced current causes the monopole antenna to radiate low-frequency electromagnetic waves outward, and the electromagnetic wave The frequency is approximately equal to the frequency of the electromagnetic wave radiated by the low-frequency unit, causing interference to the signal radiated and transmitted by the low-frequency unit

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