Built-in antenna for hand-held communication equipment
A technology of handheld communication equipment and built-in antenna, applied in the direction of antenna support/installation device, radiating element structure, etc., it can solve the problems of not very wide bandwidth and lack of good methods for widening the bandwidth of high-frequency parts, etc., to achieve the working frequency More bandwidth, better application value and promotion prospects, and obvious effects
Inactive Publication Date: 2010-05-26
徐锋
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Problems solved by technology
[0004] At present, there is a built-in antenna of a handheld communication device that adds a parasitic antenna on the basis of a planar inverted F-shaped antenna. The parasitic antenna is directly grounded. This antenna is called a double-feed antenna. This method can effectively broaden the high-frequency part of the antenna. bandwidth, but in actual application, it is found that the bandwidth of the widened high-frequency part is not very wide
[0005] The existing technology has achieved good results in widening the bandwidth of the low-frequency part of the built-in antenna of the handheld communication device, and can increase the bandwidth of the high-frequency part through the form of a parasitic antenna, but there is no good way to further broaden the bandwidth of the high-frequency part
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[0016] Such as figure 1 Shown: the built-in antenna for handheld communication equipment provided by the embodiment of the present invention includes a main antenna (1) and a parasitic antenna (2), the main antenna (1) is connected with a main matching circuit (3), and the parasitic A parasitic matching circuit (4) is connected to the antenna (2), with a plane size of 10mm*36mm and a height of 5mm.
[0017] The built-in antenna for the handheld communication device provided by the embodiment of the present invention connects the parasitic matching circuit to the parasitic antenna, so as to further widen the bandwidth of the high-frequency part and realize two high- and low-frequency resonances on the two antenna bodies at the same time. Almost at the same time, the high and low frequency bandwidth of the antenna is doubled.
[0018] The specific implementation is as figure 2 As shown, the main antenna and the parasitic antenna are planar inverted F-shaped antennas. The main...
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The invention provides a built-in antenna for hand-held communication equipment, which comprises a main antenna (1) and a parasitic antenna (2), wherein a main matching circuit (3) is connected with the main antenna (1), and a parasitic matching circuit (4) is connected with the parasitic antenna (2). The invention has the advantages of smaller volume, wider bandwidth of working frequency, and the like, thus the hand-held communication equipment has stronger functions and smaller volume. The invention realizes the purpose of carrying out high frequency resonance and low frequency resonance simultaneously on two antenna bodies, provides more possibility for widening high frequency bandwidth and low frequency bandwidth of the antenna, has very important study value, and simultaneously has good application value and popularization prospect in industrial production because of low improvement cost and obvious effect.
Description
technical field [0001] The invention relates to antenna technology, especially a built-in antenna for handheld communication equipment. Background technique [0002] In recent years, the development of mobile communication is in the ascendant, and the corresponding handheld communication equipment has also changed rapidly. The antenna of handheld communication equipment has developed from an external retractable antenna to an external cylindrical antenna, and finally to a built-in antenna. The functions of mobile phones are becoming more and more abundant, the volume is getting smaller and smaller, the frequency range is getting wider and wider, and the performance requirements are higher. How to design a built-in antenna for a handheld communication device with a smaller size but a wider frequency is a current research direction in the industry. [0003] The built-in antennas used in handheld communication devices are generally single-fed antennas, commonly known as monopo...
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IPC IPC(8): H01Q1/22H01Q1/36
Inventor 徐锋
Owner 徐锋