Method for testing rectification conversion efficiency in radio frequency self-wake-up switch

Abstract

The invention relates to a method for testing rectification conversion efficiency in a radio frequency self-awakening switch. The radio frequency self-awakening switch is placed in an effective position in front of a radio frequency energy source; an on-off control circuit in the radio frequency automatic wake-up switch is switched off, and wires are externally connected to an electronic load, an ampere meter and a voltmeter to serve as a power measurement circuit; collecting and recording rectified and converted current and voltage data in the radio frequency self-awakening switch obtained by the power measuring circuit, and calculating to obtain a rectified and converted power value; removing the radio frequency self-awakening switch, and placing the radio frequency energy collection antenna at the same position as the radio frequency self-awakening switch; connecting the output end of the radio frequency energy collection antenna to a frequency spectrograph; starting the radio frequency energy source, collecting and recording current and voltage data output by the radio frequency energy collection antenna and obtained by the frequency spectrograph, and calculating to obtain a power value before rectification conversion; and the rectification conversion efficiency in the radio frequency self-wake-up switch is calculated. The rectification conversion efficiency of the internal circuit of the radio frequency self-wake-up switch can be measured simply and precisely.

Description

Technical Field

[0001] This invention belongs to the field of radio frequency testing technology and relates to a test method for the internal rectification and conversion efficiency of a radio frequency self-wake-up switch. Background Technology

[0002] As a key component of low-power systems such as the Internet of Things (IoT) and wireless sensor networks, the conversion efficiency of the internal rectifier circuit of the RF wake-up switch directly affects the overall performance and battery life of the device. Currently, the efficiency testing of RF rectifier circuits mainly relies on manually adjusting signal source parameters and load resistance, obtaining data through multiple experiments. This process is not only labor-intensive and time-consuming, but also easily affected by fluctuations in environmental parameters, resulting in limited test accuracy. Traditional methods also often rely on commercial simulation software for theoretical analysis, but these tools have insufficient frequency and power adaptability, making it difficult to accurately calculate matching losses and actual conversion efficiency.

[0003] CN210350094U describes a receiving and rectifying antenna system. Through the arrangement of the antenna body, antenna array module, rectifier circuit module, and horizontal adjustment support module, it enables excellent energy focusing characteristics, thereby improving the energy receiving gain. While this patent improves the energy receiving gain, the testing method remains traditional, involving a large workload, long processing time, and susceptibility to environmental parameter fluctuations, thus limiting testing accuracy. During efficiency testing, some test schemes require complex calibration using high-end equipment such as vector network analyzers. This not only results in high equipment costs, but also involves multiple offline processing steps, long test cycles, and the introduction of errors. Furthermore, the test is highly complex and prone to damage due to improper operation. Summary of the Invention

[0004] The purpose of this invention is to solve the above-mentioned problems and provide a method for testing the internal rectification and conversion efficiency of an RF self-wake-up switch.

[0005] To achieve the above objectives, the present invention provides a method for testing the internal rectification conversion efficiency of an RF self-wake-up switch, comprising: S1. Set up and connect the radio frequency signal source and the radio frequency power amplifier to form a radio frequency energy source; S2. Place the radio frequency self-wake-up switch in the effective position in front of the radio frequency power source; S3. Disconnect the on / off control circuit in the radio frequency wake-up switch and connect the external wires to the electronic load, ammeter and voltmeter as a power measurement circuit. S4. Start the radio frequency power source and collect and record the current and voltage values ​​of the rectified converter inside the radio frequency self-wake-up switch obtained from the power measurement circuit, according to the formula. Obtain the power value of the rectified converter; S5. Remove the RF self-wake-up switch and place the RF energy harvesting antenna in the same position as the RF self-wake-up switch; S6. Connect the radio frequency energy harvesting antenna to the spectrum analyzer; S7. Start the radio frequency energy source and collect and record the current and voltage values ​​output by the radio frequency energy harvesting antenna obtained from the spectrum analyzer, according to the formula. Obtain the power value before rectification and conversion by the RF self-wake-up switch; S8. According to the formula The rectifier conversion efficiency within the RF self-wake-up switch was calculated, and the test was completed.

[0006] Furthermore, in S2, the effective position of the radio frequency self-wake-up switch should be appropriate and ensure that the radio frequency self-wake-up switch operates normally.

[0007] Furthermore, the on / off control circuit in S3 is connected to the load and power measurement circuit by extending wires outward through a 0-ohm resistor pad.

[0008] Furthermore, in S5, the position of the radio frequency energy harvesting antenna must be the same as the position of the radio frequency self-wake-up switch in S2, while keeping the position of the radio frequency energy source unchanged.

[0009] The beneficial effects of the present invention are as follows: The method for testing the rectification and conversion efficiency of the internal circuit of the RF self-wake-up switch of the present invention can measure the rectification and conversion efficiency of the internal circuit of the RF self-wake-up switch with high precision and simplicity. It can be applied to various tasks such as RF rectifier circuit efficiency evaluation, RF rectifier circuit adjustment and calibration, RF device selection, and energy conversion research and development. Attached Figure Description

[0010] Figure 1 The circuit diagram shows the method for testing the internal rectification and conversion efficiency of the RF self-wake-up switch according to the present invention. Detailed Implementation

[0011] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the embodiments will be briefly described below. Obviously, the drawings described below are merely some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0012] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described in detail here, but the embodiments of the present invention are not limited to the following embodiments.

[0013] like Figure 1As shown, this invention provides a method for testing the rectification and conversion efficiency within an RF self-wake-up switch, comprising: S1, setting up and connecting an RF signal source and an RF power amplifier to form an RF energy source; S2, placing the RF self-wake-up switch in an effective position in front of the RF energy source to ensure that the RF self-wake-up switch can work normally; S3, removing the 0-ohm resistor controlling the on / off state within the RF energy source to disconnect the circuit, leading wires outward from the 0-ohm resistor pads, and connecting external wires to an electronic load, an ammeter, and a voltmeter as a power measurement circuit; S4, starting the RF energy source and collecting and recording the current and voltage values ​​of the rectification and conversion within the RF self-wake-up switch obtained by the power measurement circuit, and then applying the formula... Obtain the rectified power value; S5, remove the RF self-wake-up switch and place the RF energy harvesting antenna in the same position as the RF self-wake-up switch; S6, connect the output terminal of the RF energy harvesting antenna to the spectrum analyzer; S7, start the RF energy source and collect and record the current and voltage values ​​output by the RF energy harvesting antenna obtained by the spectrum analyzer, according to the formula... Obtain the power value output by the radio frequency energy harvesting antenna; S8, according to the formula The rectifier conversion efficiency within the RF self-wake-up switch was calculated, and the test was completed.

[0014] The present invention provides a method for testing the rectification efficiency of an internal RF self-wake-up switch. This method utilizes conventional, simple, and technologically mature devices such as ammeters and voltmeters to acquire data and calculate rectification efficiency, eliminating the need for specialized instruments and reducing costs. Furthermore, the accuracy of this method is significantly higher than traditional signal source adjustment methods. Traditional signal source adjustment methods are not only labor-intensive and time-consuming but also susceptible to environmental parameter fluctuations, limiting their accuracy. In contrast, the present invention, using ammeters and voltmeters, can control the error rate to below 0.5%, greatly improving testing accuracy. Therefore, the method of this invention can be used for RF rectifier circuit efficiency evaluation, RF rectifier circuit adjustment and calibration, RF device selection, energy conversion research and development, and more.

[0015] The above description is merely one embodiment of the present invention and is not intended to limit the invention. Those skilled in the art will recognize that the present invention can be modified and varied in various ways. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A method for testing the internal rectification and conversion efficiency of an RF self-wake-up switch, characterized in that, Includes the following steps: S1. Set up and connect the radio frequency signal source and the radio frequency power amplifier to form a radio frequency energy source; S2. Place the radio frequency self-wake-up switch in the effective position in front of the radio frequency power source; S3. Disconnect the on / off control circuit in the RF automatic wake-up switch and connect the external wires to the electronic load, ammeter and voltmeter as a power measurement circuit. S4. Start the radio frequency power source and collect and record the current and voltage data of the rectifier conversion in the radio frequency self-wake-up switch obtained by the power measurement circuit, and calculate the power value of the rectifier conversion. S5. Remove the RF self-wake-up switch and place the RF energy harvesting antenna in the same position as the RF self-wake-up switch; S6. Connect the output of the radio frequency energy harvesting antenna to the spectrum analyzer; S7. Start the radio frequency energy source and collect and record the current and voltage data output by the radio frequency energy harvesting antenna obtained by the spectrum analyzer, and calculate the power value before rectification and conversion. S8. Calculate the rectification conversion efficiency inside the RF self-wake-up switch and complete the test.

2. The method for testing the rectification and conversion efficiency within the RF self-wake-up switch according to claim 1, characterized in that, In S2, the effective position for placing the radio frequency self-wake-up switch refers to the position that enables the radio frequency self-wake-up switch to operate normally.

3. The method for testing the rectification and conversion efficiency within the RF self-wake-up switch according to claim 1, characterized in that, The on / off control circuit in S3 is connected to the load and power measurement circuit by leading wires out through the 0-ohm resistor pad.

4. The method for testing the rectification and conversion efficiency within the RF self-wake-up switch according to claim 1, characterized in that, In step S5, the position of the radio frequency energy harvesting antenna must be the same as the position of the radio frequency self-wake-up switch in step S2, while keeping the position of the radio frequency energy source unchanged.

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