RF attenuation patch equivalent attenuation control circuit

Abstract

The invention discloses an RF attenuation patch equivalent attenuation control circuit, which comprises a reference signal source, a patch socket, an electrically adjustable attenuator and a micro control unit. The electrically adjustable attenuator is arranged on an RF signal transmission line requiring certain attenuation. The reference signal source is connected to the patch socket, and the attenuation patch inserted into the patch socket is used for attenuating a reference signal outputted by the reference signal source. An analog-to-digital conversion module in the micro control unit is configured to convert the attenuated reference signal into corresponding data. The micro control unit controls the electrically adjustable attenuator to generate an attenuation value equivalent to theattenuation patch according to the converted data. Therefore, the RF attenuation patch equivalent attenuation control circuit can avoid the attenuation deviation between different attenuation patches,and stably generate equivalent attenuation, thereby solving the limitation of applying the attenuation patch to the RF transmission system, and avoiding design redundancy of the RF transmission system. .

Description

technical field [0001] The invention relates to the technical field of radio frequency transmission, in particular to an equivalent attenuation control circuit of a radio frequency attenuation insert. Background technique [0002] In the radio frequency transmission system, it is usually necessary to use attenuation inserts or EQ slope inserts to adjust the radio frequency signal, but due to the discrete factors of attenuation devices, even if the attenuation inserts or EQ slope inserts of the same manufacturer have different specifications, the return loss There is also a big difference between the error and the standard attenuation, especially in the field construction application, the attenuation insert or the EQ slope insert used may be provided by many different manufacturers, because the processing technology and design scheme of different manufacturers are different, It will lead to uncertain deviations in the return loss and insertion loss of the attenuation insert o...

AI Technical Summary

Problems solved by technology

[0002] In the radio frequency transmission system, it is usually necessary to use attenuation inserts or EQ slope inserts to adjust the radio frequency signal, but due to the discrete factors of attenuation devices, even if the attenuation inserts or EQ slope inserts of the same manufacturer have different specifications, the return loss There is also a big difference between the error and the standard attenuation, especially in the field construction application, the attenuation insert or the EQ slope insert used may be provided by many different manufacturers, because the processing technology and design scheme of different manufacturers are different, It will lead to uncertain deviations in the return loss and insertion loss of the attenuation insert or the EQ slope insert itself, and when these deviation factors are cascaded with the radio frequency transmission system, the attenuation accuracy or attenuation slope, Indicators such as gain flatness and return loss will deteriorate or fail to meet the requirements. Therefore, in order to reduce the impact on the radio frequency transmission system, in actual use, there are often constraints on the manufacturer and model used, and it is also necessary to control the radio frequency transmission system. Compatible design of the system increases the difficulty of designing RF transmission products

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