Apparatus and method for adjusting diameter of spiral antenna, and spiral antenna
A helical antenna and helical technology, applied in the field of antenna research, can solve the problem of a single working mode of the helical antenna
Active Publication Date: 2016-07-06
GUANGDONG IND TECHN COLLEGE
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Problems solved by technology
[0013] The main purpose of the present invention is to overcome the shortcomings and deficiencies of the prior art, to provide a device for adjusting the diameter of the helical antenna, which can randomly change the diameter of the helical antenna, thereby changing the radiation pattern of the helical antenna, so that the helical antenna can Mode, axial mode, and conical mode can be converted arbitrarily, which solves the problem of single working mode of the existing helical antenna
Method used
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Embodiment 1
[0080] see figure 2 — Figure 6 In this embodiment, a device for adjusting the diameter of a helical antenna includes a helical bracket, a rotating shaft, a strut, a dielectric cover, a stepping motor for a rotating shaft, a stepping motor for retracting and retracting lead wires, a control circuit, a base, and the like. Wherein the base includes a base cover plate and a base box, and the control circuit is fixed on a PCB circuit board, and the PCB circuit board, the rotating shaft stepping motor, and the lead wire retractable stepping motor are all arranged in the base, wherein the lead wire retractable stepping motor The stepper motor fixing frame is fixed on the base through the lead wire. The medium cover is arranged above the base, and the two are connected by buckles. The control circuit is connected with external equipment through a waterproof joint. In this embodiment, the base is made of metal materials, the ball bearings are made of ceramic bearings, and the rest ...
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The invention discloses an apparatus and a method for adjusting the diameter of a spiral antenna, and the spiral antenna. The apparatus comprises a spiral bracket, a rotary shaft and supporting rods, wherein the axial line of the rotary shaft coincides with the axial line of the spiral bracket; the supporting rods comprise fixed structures, sliding rings, supporting rod bodies and supporting rod threading rings; multiple convex plates are arranged on the rotary shaft in the circumferential direction; the fixed structures are fixed on the convex plates; the sliding rings are clamped on the spiral bracket, and capable of sliding along the spiral bracket; wires used for forming the spiral antenna pass through each supporting rod threading ring on each supporting rod; and a rotary shaft stepper motor and a lead collecting and releasing stepper motor are both connected with a control circuit separately. The spiral antenna provided by the invention is arranged on the supporting rods; with the rotation of the rotary shaft stepper motor, the diameter of the spiral antenna is changed as well; meanwhile, due to the rotation of the lead collecting and releasing stepper motor, the collecting and releasing of the flexible wires can be realized; and therefore, the automatic adjustment of the diameter of the spiral antenna is realized, and the problem of single operating mode of the existing spiral antenna is solved.
Description
technical field [0001] The invention relates to the field of antenna research, in particular to a device and method for adjusting the diameter of a helical antenna and the helical antenna. Background technique [0002] A helical antenna is a type of antenna that can transmit and receive polarized electromagnetic signals that rotate in space. This kind of antenna is usually used in the ground station of satellite communication. It is made of metal wire or metal tube into a helical shape. It is fed with an unbalanced feeder, such as a coaxial cable. The inner conductor of the coaxial line is connected to one end of the helix. The outer conductor is connected to the floor. [0003] Helical antennas usually consist of multiple helical sections and a reflector. The reflectors are round or square. The helical portion has a radius between one-eighth and one-quarter wavelength. The minimum size of the antenna depends on the frequency of the low-frequency signal used, and the rad...
Claims
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IPC IPC(8): H01Q11/08
CPCH01Q11/08
Inventor 董兵
Owner GUANGDONG IND TECHN COLLEGE