Multi-frequency antenna
A multi-frequency antenna and wire technology, applied to antennas, devices that enable antennas to work in different bands at the same time, and the structure of radiation elements, etc., can solve the problem of inability to cover multiple system frequency bands, inability to achieve broadband effects, and large production errors, etc. problems, to achieve the effect of improving antenna radiation efficiency, uniform surface current distribution, and smooth impedance changes
Active Publication Date: 2011-04-20
昆山展腾电子科技有限公司
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Problems solved by technology
[0005] Although the above-mentioned antenna can form multi-frequency operation, it has the following disadvantages: the distance between the first conductive sheet A1 and the second conductive sheet B1 is too short, so the bandwidth at low frequency and high frequency is not enough to cover multiple frequencies. A system frequency band, and in actual production, if the spacing is too small, the production error will increase and the yield rate will decrease; at the same time, the feed-in line and the feed-in point are located close to the first connection part A2, which is a traditional inverted-F antenna architecture, the bandwidth of the antenna has a certain upper limit, and the broadband effect cannot be achieved
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no. 1 example
[0017] see figure 2 , is the first embodiment of the multi-frequency antenna of the present invention, which includes a radiator 21, and the radiator 21 includes: a microwave substrate 211; a coupling conductor 212 located on the surface of the microwave substrate 211; a first conductor 213, Located on the surface of the microwave substrate 211 and adjacent to the coupling conductor 212, the coupling conductor 212 forms a coupling structure with the first conductor 213, and has a coupling gap, and the coupling gap can be less than 3mm at the smallest point, by the coupling structure Electrical signals can be fed into the antenna; a second conductor 214 is located on the surface of the microwave substrate 211, one end of which is connected to the first conductor 213, and the other end extends away from the first conductor 213; The third conductor 215 is located on the surface of the microwave substrate 211, and its extension direction is approximately parallel to the first con...
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The invention relates to a multi-frequency antenna with function of wide frequency, which comprises a radiator, a feed-in wire, a first extended conductor and a second extended conductor. The radiator is provided with a micro-wave substrate, a coupling conductor, a first conductor, a second conductor, a third conductor and a connecting conductor; wherein the coupling conductor is connected with asignal positive terminal of the feed-in wire, while the third conductor is connected with a signal negative terminal of the feed in line, which is used for transmitting electric signal. The radiator can produce multi-frequency mode of the antenna, simultaneously, the radiator is connected with both the first extension conductor and the second extension conductor, which can effectively adjust the distribution of electric current and change of impedance on the surface of the antenna, thus achieving the effect of wide frequency.
Description
technical field [0001] The invention is a multi-frequency antenna, especially a multi-frequency antenna with broadband effect. Background technique [0002] The rapid development of wireless communication in recent years has shown huge potential and business opportunities. At the same time, many systems have been developed. The technologies and channels they adopt are different, and they each occupy a place in different regions and markets. However, this phenomenon It has also caused trouble and inconvenience to system suppliers and consumers. One of the most important points is that different systems use different frequencies, such as GSM900, PCS1900 and UMTS. [0003] In order to make the operation more convenient for users, the industry has invested a lot of manpower to develop multi-frequency integrated products. However, the first difficulty to be overcome is the antenna. The antenna can be said to be the beginning and end of wireless communication, and its characterist...
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IPC IPC(8): H01Q5/00H01Q13/08H01Q1/38H01Q5/10H01Q5/20H01Q5/364H01Q5/378
Inventor 林圣智邱宗文萧富仁
Owner 昆山展腾电子科技有限公司