Double-frequency antenna

An antenna and frequency band technology, which is applied in the field of multi-band planar inverted F-shaped antennas, can solve the problems of increasing product cost burden, coaxial cables are easy to fall off, etc., and achieve the effect of avoiding cost burden

Inactive Publication Date: 2013-06-26
ARCADYAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the conventional technology has a problem that the coaxial cable is easy to come off
In addition, the additional coaxial cable increases the cost burden of the product at the same time

Method used

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Examples

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Embodiment Construction

[0035] An embodiment of the present invention provides a Planar Inverse-F Antenna (PIFA), which can receive a feed-in signal and a ground signal through a circuit on a Printed Circuit Board (PCB).

[0036] Please refer to FIG. 1 , which shows a perspective view of an antenna according to a preferred embodiment of the present invention. The antenna 10 is disposed on the PCB 100 , and the PCB 100 includes a signal transmission unit 200 , grounding units 300 a and 300 b for respectively providing a feed-in signal and a grounding signal to the antenna 10 .

[0037] Please refer to FIG. 2 , which shows a schematic diagram of the antenna 10 of this embodiment. The antenna 10 is, for example, used in an electronic device for information transmission via the communication protocol 802.11 a / b / g / n formulated by The Institute of Electrical and Electronics Engineers (IEEE). The antenna 10 supports a communication frequency band of 2.4 GHz to 2.5 GHz And communication frequency band 4.9GH...

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Abstract

An antenna is arranged on a circuit board provided with a signal transmission unit and a grounding unit. The antenna comprises a conductor support section, a radiator and a grounding section, wherein the radiator is used for operating a first frequency band and includes a feed-in branch section coupled with the signal transmission unit for receiving a feed-in signal; the grounding section is electrically connected with the radiator through the conductor support section and includes a slot cavity and a grounding branch section; the slot cavity extends from the top surface of the grounding section to the inner side of the grounding section; the grounding branch section is coupled with the grounding unit; and a resonant cavity is formed between the radiator and the slot cavity and has a resonant frequency for operating a second frequency band.

Description

technical field [0001] The present invention relates to an antenna, and in particular to a multi-band Planar Inverse-F Antenna (IFA). Background technique [0002] In today's era of rapid technological development, various sizes of lightweight antennas have been developed to be used in various sizes of increasingly lightweight handheld electronic devices (such as mobile phones or notebook computers) or wireless transmission devices (such as APs) middle. For example, the Planar Inverse-F Antenna (PIFA), which has a light structure, good transmission performance, and can be easily installed on the inner wall of a handheld electronic device, already exists and is widely used in a variety of handheld electronic devices. In the wireless transmission of the device or in the wireless communication device. [0003] For example, the ground signal and the signal to be transmitted through the PIFA are respectively transmitted through the outer conductor layer and the inner layer of t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01Q1/22H01Q1/24H01Q5/00H01Q9/04H01Q13/08
Inventor 黄智勇郑平熙李长荣
Owner ARCADYAN
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