Portable DNA simulation reconfigurable antenna
A reconstruction antenna, portable technology, applied in the direction of antenna, helical antenna, non-resonant long antenna, etc., to achieve the effect of high gain, simple structure and convenient reconstruction
Inactive Publication Date: 2014-09-03
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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Problems solved by technology
Although the various existing methods can achieve frequency reconfigurability to a certain extent, their common disadvantage is that once the antenna is fabricated, it can only be adjusted within the designed frequency bands
Method used
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Embodiment Construction
[0025] see figure 1 , a frequency reconfigurable antenna based on DNA inspiration, the structure includes a ground plate 4 and an active helical wire 1 connected to the feed circuit through the ground 4, and also includes a coaxial with the active helical wire 3 A parasitic helical wire 1 wound in the same direction, on the same helical cylindrical surface, and at the same helix angle, and a lumped element 5 is provided between the active helical wire 3 and the parasitic helical wire 1 . That is to say, both the active helical wire 1 and the parasitic helical wire 3 can be left helical or both are right helical, and both have the same structure and are arranged coaxially, but the position of the starting end on the ground plate 4 is different.
[0026] The parasitic helical wire 3 is connected to the ground plate 4 by means of a grounding capacitor 2, and the grounding capacitor 2 can be a component capable of realizing a capacitive function, for example, a wooden block is us...
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The invention discloses a portable DNA simulation reconfigurable antenna which structurally comprises a ground plate and an active helical metal wire connected with a feed circuit through the ground plate, and further comprises a parasitic helical metal wire which is coaxial with and has the same helical cylindrical surface with the active helical metal wire and is wound at the same helical angle together with the active helical metal wire; and a lumped element is arranged between the active helical metal wire and the parasitic helical metal wire. According to the reconfigurable antenna provided by the invention, through changing the type and the position of the lumped element, two main functions of wideband and work frequency point adjustability are realized. The antenna with different functions can be applied to a different antenna system; a double-helix structural antenna with wide wideband and high gain can be used for a radio receiving system; and the band width, gain, axial ratio and other indexes of the system can be optimized through adjusting the intensity or position of inductance; and the frequency adjustable double-helix antenna, which is realized through adding a capacitor, can be used for a radio transmitting terminal.
Description
technical field [0001] The invention relates to an antenna used in the radio communication field, in particular to a portable DNA-simulated reconfigurable antenna, which can realize reconfigurable frequency. Background technique [0002] As a component used to transmit and receive radio waves, the antenna plays a pivotal role in the wireless communication system and is an indispensable part of the wireless communication system. With the rapid development of high-frequency satellite communication systems, radar, wireless communication systems, especially the construction of global 3G and 4G networks, the requirements for antennas are getting higher and higher. On the one hand, the antenna needs to be able to work in multiple frequency bands, has a variety of working modes and has good transmission performance; Antennas are considered to be one of the best solutions to the above problems. Reconfigurable antennas are divided into frequency reconfigurable antennas (includi...
Claims
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IPC IPC(8): H01Q1/36H01Q11/08H01Q5/00
Inventor 王朗杨顺李乐伟杨森雷传球刘汉立
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA