Rectenna array for microwave reception

Abstract

The invention provides a rectenna array for microwave reception. According to the invention, a linear polarization binary series microstrip rectangular patch array that works at a 2.45 GHz is utilized as a reception rectenna; a microstrip line series feed is employed to enable an antenna and a rectification circuit to be at a same plane; and two short branch knots that are introduced between unit patches can be used for adjusting an orientation of an antenna directional diagram. The above-mentioned structure is very convenient to be expanded and can be applied to a design of a large-scale array. According to the invention, the array has advantages of small profile, small volume and light weight; and the array has a planar structure and is easy for coplane and conformal realization with electric equipment; moreover, the reception rectenna array is wholly manufactured on a same medium substrate and is suitable for mass production with utilization of a printed circuit technology and the costs are low; and the microstrip line feeding mode enables a rectenna array to be easy to carry out array organization; therefore, the array can be applied to a large-power occasion.

Description

technical field [0001] The invention relates to a receiving conversion device in the field of wireless microwave energy transmission, that is, a planar printed rectifying antenna array, which is used for receiving and converting microwave energy into direct current. Background technique [0002] In the 1960s, in order to solve the world's growing demand for energy, the concept of space solar power plants was proposed: In space, solar cells installed on satellites are used to collect electrical energy, and then convert electrical energy into microwaves for transmission. The receiving station is responsible for receiving microwaves, which are then converted into electrical energy and input into the grid. The Japan Aerospace Development Center is also working on a similar space solar power generation system, which is expected to start before 2030. At the research base in Hokkaido, Japanese scientists used an instrument device with a diameter of 2.4 meters to conduct an experim...

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Problems solved by technology

[0003] The erection of traditional high-voltage transmission lines consumes manpower and material resources, especially for mountains, deserts, and isolated islands with complex geographical environments.

However, the limited energy capacity of the battery needs to be charged, and the solar battery is greatly affected by the weather environment, and the conversion efficiency is not high.

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