Sub-1G radio frequency front-end circuit design based on RF energy detection and parameter adjustment method based on RF energy detection

Abstract

The invention discloses a sub-1G radio frequency front-end circuit design based on RF energy detection and a parameter adjustment method based on RF energy detection. The procedure for adjusting parameter values of components in a second-order elliptic function low-pass filter on the basis of RF energy detection specifically comprises the following steps that a channel energy value is obtained; energy loss of a wireless signal on a transmission line and the communication distance between nodes are calculated; according to the calculated energy loss on the transmission line and the communication distance between the nodes, the parameter values of the components of the second-order elliptic function filter are adjusted. The stability and the reliability of the designed Sub-1G radio frequency front-end circuit are high, the parameter values of the components in the second-order elliptic function low-pass filter can be adjusted on the basis of RF energy detection, the purpose that the transmission line and the impedance of the load are matched with the impedance of a radio frequency source is achieved by replacing the actual electronic component values of the radio frequency circuit, and transmission at the maximum transmission power is achieved.

Description

technical field [0001] The invention relates to the field of radio frequency technology, in particular to a Sub-1G radio frequency front-end circuit design and parameter adjustment method based on RF energy detection. Background technique [0002] The Sub-1G frequency band is an application-free transmission and reception frequency in our country. It can be used directly and has strong penetration. It is suitable for applications with many obstacles and wireless transmission. Sub-1G can be subdivided into four series of 433MHz, 470MHz, 868MHz, and 915MHz according to the wireless transmission frequency band. Compared with the 2.4G frequency band, the Sub-1G frequency band has a better effect in terms of coverage and capacity, and is currently widely used in the fields of mobile communications and wireless networks. [0003] The existing RF front-end circuits generally have complex structures, low system stability and reliability, large power loss on the transmission line, a...

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Problems solved by technology

[0003] The existing RF front-end circuits generally have complex structures, low system stability and reliability, large power loss on the transmission line, and the parameter values ​​of the components in the circuit are calculated theoretically, so the actual effect is far from ideal. There is no technical solution for adjusting the component parameter values ​​of the RF front-end circuit

Therefore, the existing RF front-end circuit design structure is unreasonable, and the component parameter values ​​​​of the circuit cannot be adjusted based on RF energy detection, so that the transmission of the maximum transmission power cannot be achieved

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