A high-gain directional radiation dual-band receiving antenna for RF energy harvesting

Abstract

The invention discloses a high-gain directional radiation dual-frequency receiving antenna for collecting radio frequency energy, which comprises an upper circuit board, a lower circuit board, an air layer and a nylon support; the upper circuit board is fixedly connected to the lower circuit board through the nylon support; the air The layer is fixed between the upper circuit board and the lower circuit board; the upper circuit board has a microstrip-slit radiation structure, which is used to stimulate the working mode of the dual-frequency receiving antenna; the lower circuit board is a transmitting structure, which is used to improve the dual-frequency receiving antenna. The gain factor and the directional radiation of the dual-frequency receiving antenna are guaranteed. The present invention designs a receiving antenna for radio frequency energy collection in the WLAN working frequency band, which has the characteristics of high gain, double wide frequency band and directional radiation, and is used to receive radio frequency signals with clear source directions, and provides for the subsequent parts of the radio frequency energy collection system Higher input can greatly improve the efficiency of the RF energy harvesting system.

Description

technical field [0001] The invention belongs to the technical fields of antenna technology and radio frequency energy collection, and in particular relates to a high-gain directional radiation dual-frequency receiving antenna for radio frequency energy collection. Background technique [0002] Nowadays, with the popularization of the concept of "Internet of Everything", large-scale sensor networks have been applied in human society. On the one hand, these electronic devices often rely on primary batteries for power supply, and frequent replacement of batteries will increase the maintenance cost of the equipment; on the other hand, these sensors rely on electromagnetic waves for information transmission, so the radio frequency energy density in the environment is greatly increased. Based on the above two points, using RF energy harvesting technology to build a battery-free system has become a popular research object. [0003] Radio frequency energy has the advantages of stab...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem of improving the efficiency of the radio frequency energy collection system, and propose a high-gain directional radiation dual-frequency receiving antenna for radio frequency energy collection

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