Handheld microwave monitoring antenna master control circuit and method thereof

Abstract

The invention discloses a handheld microwave monitoring antenna master control circuit and a method thereof. The handheld microwave monitoring antenna master control circuit comprises a monitoring antenna, a signal comparison module, a gating switch, an amplifier and an output module, wherein the output end of the monitoring antenna and the input end of the gating switch are connected through the signal comparison module, one path of output of the gating switch is directly connected with the output module, the other path of output is connected with the output module through the amplifier, and the gating switch is a single-pole double-throw switch. The handheld microwave monitoring antenna master control circuit can judge the intensity of microwave signals received by the monitoring antenna so as to select a through path or an amplification path, thereby improving the accuracy of a measurement result. The PIN single-pole double-throw switch is adopted, thereby reducing nonlinear variations of the microwave signals. The overall circuit is simple in structure and high in practicability.

Description

technical field [0001] The invention relates to an antenna main control circuit, in particular to a hand-held microwave monitoring antenna main control circuit and method capable of judging the strength of microwave signals received by the monitoring antenna. Background technique [0002] The existing microwave measurement method is: the monitoring antenna receives the microwave signal propagating in the air, and directly transmits the received microwave signal to the microwave measurement equipment or transmits the received microwave signal to the microwave measurement equipment after amplification, which is convenient for microwave The measurement equipment processes the microwave information to obtain measurement results. The above method can effectively measure the microwave signal, so as to obtain the corresponding information such as temperature, humidity, distance, speed and thickness, but the above method has the following problems: [0003] 1. The received microwav...

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Problems solved by technology

[0003] 1. The received microwave signal is directly transmitted to the measurement equipment. If the intensity of the microwave signal is weak at this time, it is difficult for the measurement equipment to extract useful information when processing it, thus affecting the measurement result;

[0004] 2. The received microwave signal is amplified and then transmitted to the measuring equipment. If the intensity of the microwave signal received by the monitoring antenna is strong enough at this time, the microwave signal is amplified again, which will cause distortion of the microwave signal, resulting in measurement inaccurate result

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