A dual frequency antenna
A dual-frequency antenna and antenna part technology, which is applied to the structural connection of the antenna and the antenna grounding switch, and the device that enables the antenna to work in different frequency bands at the same time, can solve the problem of increasing the overall size of the antenna and unable to meet the microwave frequency band and the millimeter wave frequency band at the same time. Wireless communication work requirements, low antenna frequency and other issues, to achieve the effect of saving processing costs, compact structure, and high integration
Active Publication Date: 2021-10-29
BEIJING JIAOTONG UNIV
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Problems solved by technology
[0004] The working frequency bands of existing dual-band or multi-band antennas are mostly low-frequency bands below 6 GHz, so the frequency ratio between different working frequency bands of these antennas will be very small, which cannot meet the working requirements of wireless communication in the microwave band and millimeter wave band at the same time
At the same time, the high-frequency and low-frequency radiation structures of existing large-frequency multi-frequency antennas are mostly discrete designs, which are essentially two independent antenna units that are integrated together by horizontal or vertical arrangement, which virtually increases the antenna's total measurement
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[0050] In order to illustrate the present invention more clearly, the present invention will be further described below in conjunction with preferred embodiments and accompanying drawings. Similar parts in the figures are denoted by the same reference numerals. Those skilled in the art should understand that the content specifically described below is illustrative rather than restrictive, and should not limit the protection scope of the present invention.
[0051] Such as figure 1 As shown, an embodiment of the present invention provides a dual-frequency antenna, which is mainly composed of a high-frequency part and a low-frequency part.
[0052] In the specific implementation of the present invention, the dual-band antenna mainly includes a substrate 3, electrode layers 8 respectively arranged on both sides of the substrate 3, and an antenna part, and the antenna part includes a metal strip 1 with a bent part. In the embodiment, the number of bending parts of the metal stri...
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The invention discloses a dual-frequency antenna, which includes a substrate; electrode layers and antenna parts respectively arranged on both sides of the substrate; the antenna part includes: a metal strip with a bent part; arranged on the metal strip several slits; and metal vias formed on the edge of the metal strip and arranged in a line; wherein, the metal strip includes an open circuit end and a feed port end, and the open circuit end of the metal strip is located at the The end of the bent part; several of the slits are alternately distributed on both sides of the center line extending from the open-circuit end of the metal strip to the symmetrical direction of the open-circuit end of the metal strip; the substrate and the The metal strips and metal vias on the substrate constitute the substrate integrated waveguide. The present invention can realize a large frequency ratio without increasing the size of the original antenna.
Description
technical field [0001] The invention relates to the technical fields of electronics and communication information, in particular to a dual-frequency antenna. Background technique [0002] Most modern wireless communication systems have multiple working frequency bands. However, with the rapid development of wireless communication technology, the multi-band work requirements of wireless communication systems have put forward new design requirements for the antenna as an important part of the system. Under the premise of meeting the requirements of multiple working frequency bands, dual-band or multi-band antennas can effectively save the space occupied by the antenna, reduce the size of the entire antenna system, and also facilitate the integration of the entire wireless system and reduce costs. Therefore, in recent years, it has been It is a hotspot in the field of antenna research. [0003] The working frequency band of existing wireless communication equipment is mostly ...
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IPC IPC(8): H01Q1/38H01Q1/50H01Q5/20H01Q5/307H01Q5/35
CPCH01Q1/38H01Q1/50H01Q5/20H01Q5/307H01Q5/35
Inventor 李雨键刘杨王均宏张展陈美娥李铮
Owner BEIJING JIAOTONG UNIV