A Wide Beam Pattern Reconfigurable Rectenna
A technology of rectifying antenna and pattern, which is applied to antennas, resonant antennas, antenna grounding devices, etc., to achieve the effects of light weight, simple structure and high rectification efficiency
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Embodiment 1
[0031] The pattern of the reconfigurable receiving antenna is as follows: figure 1As shown, it includes circular radiation patch 1, four parasitic patches 2, 3, 4, 5, eight switches 7, 8, 9, 10, 11, 12, 13, 14, dielectric substrate with ground 15 and feeder Electric coaxial probe 18; the circular radiation patch 1 is located at the center of the dielectric substrate 15, and the feeding coaxial probe 18 is located at the center of the circular radiation patch 1; four parasitic patches 2, 3, 4, 5 have the same size and shape, and are arranged around the circular radiation patch 1 as the center; each parasitic patch has an arc-shaped gap at the same position; every two switches are a switch group, and the two switches are arranged side by side across Connected to both sides of the arc-shaped slit of each parasitic patch; there is a via hole 16 inside the arc-shaped slit of each parasitic patch; a feed network 17 is connected to the outside of each parasitic patch; each feed The ...
Embodiment 2
[0044] A rectifier circuit with a complex impedance compression network, its structure diagram is as follows figure 2 As shown, it is printed on a strip of dielectric substrate, including two pre-capacitors 19, 21, two rectifier diodes 20, 22, π-type impedance compression network 23, two output filters 24, 25, two resistors 26, 27 and the first matching branch; the rectification circuit is divided into the same two rectification circuit branches, and each rectification circuit branch is composed of a precapacitor, a rectifier diode, an output filter and a resistor; the precapacitor, output The filter and the resistor are connected in series, a rectifier diode is connected in parallel between the precapacitor and the output filter, and the rectifier diode is grounded through the second matching stub; the first rectification circuit branch and the second rectification circuit branch are placed rotationally symmetrically, and the first rectification circuit branch The pre-capaci...
Embodiment 3
[0048] The feeding coaxial probe 18 of the reconfigurable receiving antenna is connected with the first matching branch of the rectification circuit with a 50Ω coaxial joint to form a reconfigurable rectifying antenna with a wide beam pattern. The four sets of feed networks are controlled by the microprocessor, and the control process is as follows image 3 As shown, change the on-off state of four groups of switches, excite different parasitic patches, and make them act as directional devices or reflectors, so that the rectenna can be reconfigured to obtain 13 working modes: one omnidirectional radiation mode, twelve Directional radiation scan mode. For situations where the incoming wave direction is uncertain or changes, the receiving antenna can scan the space in all directions, determine the incoming wave direction according to the output power, and switch to this mode to work.
[0049] The directional pattern reconfigurable rectenna of this embodiment is connected by the...
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Abstract
Description
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Application Information
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