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Radio frequency antenna

A radio frequency antenna and antenna structure technology, which is applied to the connection of the antenna and the antenna grounding switch structure, and the device that enables the antenna to work in different frequency bands at the same time, can solve the problems of consuming research and development costs, unable to match the space, and poor communication effect, etc. The effect of reducing R&D costs

Inactive Publication Date: 2016-04-06
SHENXUN COMP KUNSHAN +1
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Problems solved by technology

[0004] However, when the traditional inverted F antenna is installed in the mobile communication device, the communication effect of the antenna will be affected by the material of the mobile communication device casing, that is, the frequency band range of the traditional inverted F antenna will be affected by the material of the mobile communication device casing , resulting in poor communication effects, and the impact of different materials is also different, so the traditional inverted F antenna often needs to be redesigned according to the demand to adjust its applicable frequency band
[0005] However, the redesign process usually changes the required area and volume of the inverted-F antenna, that is to say, redesigning the inverted-F antenna will cause the space it occupies cannot match the original mobile communication device, and then the mobile communication device needs to be redesigned. Communication devices, resulting in a large amount of research and development costs

Method used

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Embodiment Construction

[0018] figure 1 It is a schematic circuit diagram of a radio frequency antenna according to an embodiment of the present invention. figure 2 for figure 1 A schematic diagram of the radio frequency antenna. image 3 for figure 1 A schematic diagram of the architecture of another embodiment of the radio frequency antenna. see Figure 1-3 , the radio frequency antenna includes a planar inverted-F antenna structure 10 and a capacitive shunt circuit 20 . The capacitive shunt circuit 20 is electrically connected between the planar inverted-F antenna structure and the ground 50 .

[0019] The planar inverted-F antenna structure 10 includes a radiation part 11 , a ground part 12 and a feeding part 13 . The feeding part 13 is coupled to the radiation part 11 , and the ground part 12 is coupled between the radiation part 11 and the ground 50 .

[0020] In some embodiments, the radiating part 11 is divided into a first section 111 and a second section 112 by the coupling area wit...

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Abstract

The invention discloses a radio frequency antenna which comprises a planar inverted-F antenna structure, a plurality of capacitor assemblies and a switching unit. The planar inverted-F antenna structure comprises a radiation portion, a grounding portion and a feed-in portion. The grounding portion is coupled to the radiation portion; the feed-in portion is coupled to the radiation portion; one end of each capacitor assembly is coupled to the radiation portion; the switching unit is connected between the other end of each capacitor assembly and the ground; and the switching unit is grounded through one of the capacitor assembly. Therefore, the inverted-F antenna structure is adjusted from the original frequency band to corresponding suitable frequency band by means of capacitance effect of the conducted capacitor assemblies.

Description

【Technical field】 [0001] The invention provides a radio frequency antenna, especially a radio frequency antenna with adjustable frequency band. 【Background technique】 [0002] Mobile communication devices such as mobile phones, smart phones, and tablets in the market all form a wireless connection with a remote telecom operator through an antenna, thereby enabling voice communication or image communication with another mobile communication device. [0003] Recently, mobile communication devices are equipped with built-in antennas, such as the inverted F antenna (PIFA) installed in the mobile communication device. It is easy to cause damage due to collision with foreign objects, and can improve the appearance aesthetics of the mobile communication device. [0004] However, when the traditional inverted F antenna is installed in the mobile communication device, the communication effect of the antenna will be affected by the material of the mobile communication device casing, ...

Claims

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Application Information

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IPC IPC(8): H01Q5/00H01Q1/50
Inventor 李彦庆
Owner SHENXUN COMP KUNSHAN
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