Multi-frequency antenna and wireless communication device with the multi-frequency antenna

A multi-frequency antenna and main antenna technology, which is applied to devices, antenna supports/installation devices, antennas, etc. that make the antennas work in different frequency bands at the same time, and can solve the communication systems and antenna bandwidths that are not easy to meet a variety of different frequency bands at the same time. not wide enough

Active Publication Date: 2020-06-19
SHENZHEN FUTAIHONG PRECISION IND CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional single-frequency antenna devices cannot meet people's needs for multi-band wireless communication devices. Therefore, in order to meet users' needs for multi-band wireless communication devices, multi-band antenna devices need to be used
However, traditional multi-band antennas are often not wide enough to meet the requirements of communication systems in different frequency bands at the same time.

Method used

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  • Multi-frequency antenna and wireless communication device with the multi-frequency antenna
  • Multi-frequency antenna and wireless communication device with the multi-frequency antenna
  • Multi-frequency antenna and wireless communication device with the multi-frequency antenna

Examples

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Embodiment Construction

[0047] see figure 1 , the wireless communication device 100 in a preferred embodiment of the present invention may be, but not limited to, a mobile phone or a tablet computer. The wireless communication device 100 includes a circuit substrate 10 , a multi-frequency antenna 200 and a carrier 30 . The multi-frequency antenna 200 is electrically connected to the circuit substrate 10 and disposed on the carrier 30 . The multi-frequency antenna 200 includes a main antenna 201, a parasitic antenna 202 and a switching circuit 203 (such as image 3 shown). The main antenna 201 includes a feeding portion 21 , a grounding portion 22 , a radiation portion 23 and a grounding extension path 24 . Both the feeding portion 21 and the grounding portion 22 are electrically connected to the circuit substrate 10 , and are respectively used for feeding signals and providing grounding for the antenna. The ground extension path 24 is connected to the ground portion 22 and the radiation portion 2...

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Abstract

The present invention provides a multi-frequency antenna, which includes a main antenna, a parasitic antenna and a switching circuit. The main antenna includes a radiation part, a feeding part, a grounding part and a ground extension path connected to the radiation part and the grounding part; For feeding current signals; the ground part is used to provide grounding for the multi-frequency antenna; the switching circuit is electrically connected to the ground extension path, and is used to switch different matching circuits to the ground extension path to change the multi-frequency antenna The low-frequency resonant frequency; the parasitic antenna is spaced apart from the main antenna and coupled to the main antenna to excite a high-frequency resonant mode. The multi-frequency antenna has a relatively wide bandwidth. The invention also relates to a wireless communication device with the multi-frequency antenna.

Description

technical field [0001] The invention relates to the field of antennas, in particular to a multi-frequency antenna and a wireless communication device with the multi-frequency antenna. Background technique [0002] With the rapid development of wireless communication technology and information processing technology and the improvement of people's living standards, portable wireless communication devices such as mobile phones and personal digital assistants (personal digital assistant, PDA) are emerging and entering thousands of households, making consumers The convenience brought by high technology can be enjoyed anytime and anywhere, making these portable wireless communication devices an indispensable part of modern people's daily life. [0003] In these wireless communication devices, the antenna device used to transmit and receive radio waves to transmit and exchange radio signals is undoubtedly one of the most important components in the wireless communication device. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q5/10H01Q1/50H01Q1/24
CPCH01Q1/243H01Q5/328H01Q5/371H01Q5/378H01Q5/335
Inventor 林彦辉
Owner SHENZHEN FUTAIHONG PRECISION IND CO LTD
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