Integrated power amplifier antenna system for long-distance microwave energy transmission system

Abstract

The invention discloses an integrated power amplifier antenna system for a long-distance microwave energy transmission system. The antenna system includes a power amplifying circuit, an antenna radiating unit, and a first dielectric plate, a ground layer and a second dielectric plate arranged in order from top to bottom, wherein the power amplifying circuit is connected with a first metal probe through a power amplifier output transmission line to perform feeding excitation to the antenna radiating unit, the antenna radiating unit is connected with the ground layer through at least one secondmetal probe, the at least one second metal probe makes secondary harmonic current distribution of the antenna radiating unit to be in a short circuit condition, a rectangular slit is arranged on the antenna radiating unit, and the rectangular slit and a transmission line branch make third harmonic current distribution of the antenna radiating unit to be in an open state. The antenna system is advantaged in that the antenna radiating unit is directly connected with the power amplifying circuit, passive networks between the two are omitted to achieve seamless integration, not only miniaturization of a transmitting device circuit is facilitated, but also overall output power and efficiency of the transmitting device can be improved.

Description

Technical field [0001] The invention relates to a long-distance microwave energy transmission system, in particular to a power amplifier antenna integrated system for a long-distance microwave energy transmission system. Background technique [0002] With the rapid development of technologies such as 5G, sensors, and the Internet of Things, higher requirements have been put forward for energy supply methods for various electric-power-driven equipment such as field sensors, robots, drones, and marine unmanned equipment. Limited by the application environment of these devices, it is becoming more and more difficult to realize the energy supply method of replacing the battery manually. Wireless Power Transmission (WPT) is an effective method to solve the above-mentioned energy supply. WPT can transmit energy wirelessly from transmitting equipment to receiving equipment. Compared with other energy supply methods such as solar energy and wind energy, WPT has the advantages of miniatu...

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Problems solved by technology

Therefore, the power amplifier output impedance matching network, power amplifier output harmonic control network and antenna input impedance matching network in the existing amplifier integrated antenna are essential parts, while the power amplifier output impedance matching network, power amplifier output harmonic control network and Antenna input impedance matching network The existence of these passive networks not only takes up extra space and is not conducive to the miniaturization of the transmitting device circuit, but also their own losses and the imperfect matching of the impedance when they are cascaded with each other greatly restrict the transmission equipment. The overall output power and efficiency of the MPT system also deviates from the design purpose of the efficiency priority of the MPT system

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