Cantilever beam receiver front end for collecting excess energy and leakage energy of Internet of Things

Abstract

The invention provides a cantilever beam receiver front end for collecting excess energy and leakage energy of the Internet of Things. The cantilever beam receiver front end uses a microwave antenna receives signals and accesses a microwave filter for filtering, then a signal is transmitted to a cantilever beam constant amplitude device for performing self detection and collecting the excess energy so as to collect the excess energy and achieve constant amplitude output, the output constant amplitude signal is conveyed into a low noise amplifier and is amplified, the amplified signal is conveyed to a clamped beam mixer used for collecting oscillating signal leakage energy to collect the energy of the local oscillating signal leaked by a mixing structure, and the mixed signal is conveyed toan intermediate frequency filter to achieve intermediate frequency output. The collected excess energy and leakage energy are converted by an AC / DC conversion module into DC voltage and is stored ina battery, and the battery for storing energy is connected with a DC power supply in parallel for supplying power to an active circuit. The cantilever beam receiver front end not only receives the signal, but also can collect the excess energy and leakage energy so as to prevent the self mixing of the local oscillating signal, reduce the power dissipation, protect the low noise amplifier and improve the stability of the system.

Description

technical field [0001] The invention proposes a cantilever beam receiver front end for collecting excess energy and leakage energy of the Internet of Things, which belongs to the technical field of micro-electro-mechanical systems (MEMS). Background technique [0002] As one of the core components of the Internet of Things, the microwave receiver front-end plays an important role in the development of the Internet of Things today. The rapid development of the Internet of Things is of great significance to the economic and social development of the whole country and the improvement of informatization level. However, some defects in the front end of the traditional microwave receiver limit its application in the Internet of Things, such as using AGC technology to control the gain of the low-noise amplifier to stabilize the output signal. When the signal received by the antenna suddenly becomes larger, it is easy to cause The internal device is burned, and the reliability is n...

AI Technical Summary

Problems solved by technology

However, some defects in the front end of the traditional microwave receiver limit its application in the Internet of Things, such as using AGC technology to control the gain of the low-noise amplifier to stabilize the output signal. When the signal received by the antenna suddenly becomes larger, it is easy to cause The internal device is burned, and the reliability is not high; in addition, part of the local oscillation signal leaks to the low-noise amplifier through the frequency mixing device, and then is blocked to generate reflected waves. This reflected wave is mixed with the local oscillation signal again, and will appear in the A DC signal is generated at the output, which not only causes a DC offset, but also increases DC power consumption

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