Method and technology for stabilizing electrical performance of semi-flexible radio frequency cable, semi-flexible radio frequency cable and connection structure for semi-flexible radio frequency cable

Abstract

The invention discloses a method for stabilizing electrical performance of a semi-flexible radio frequency cable, wherein an inner conductor, an insulating medium and an outer conductor at the connected part of the semi-flexible radio frequency cable which is connected with a radio frequency device are sequentially arranged in an exposed manner; a bending section is predefined on the exposed insulating medium; and at least one groove is formed in the bending section in the circumferential direction of the semi-flexible radio frequency cable. A connection structure for the semi-flexible radio frequency cable comprises the inner conductor, the insulating medium and the outer conductor, which are sequentially arranged in the exposed manner; the outer conductor and the inner conductor are connected with the corresponding parts of the radio frequency device respectively; the exposed insulating medium is provided with the predefined bending section; and at least one groove is formed in the bending section of the insulating medium in the circumferential direction. According to the method disclosed by the invention, the consistency and the electrical performance of a radio frequency device product are effectively improved; and the method is easy to implement.

Description

technical field [0001] The invention relates to the field of mobile communication, in particular to a method for stabilizing the electrical performance of a semi-flexible radio frequency cable, a semi-flexible radio frequency cable and a connection structure for realizing the method. Background technique [0002] The connection between the RF device and the semi-flexible RF cable affects the electrical performance of the entire RF device. The connection includes the connection method, the firmness of the connection, the stability of the connection structure, and whether the electrical performance of the RF device after connection reach the optimal index, etc. At present, in most cases, the connection between RF devices and semi-flexible RF cables still relies on manual welding. Due to the influence of welding personnel's technology, experience and other factors, the electrical performance of welded RF devices will be higher in some indicators. Large fluctuations make it dif...

AI Technical Summary

Problems solved by technology

The semi-flexible radio frequency cable includes an inner conductor, an insulating medium, an outer conductor and a sheath coaxially arranged from the inside to the outside. The "semi-flexible" feature has a negative impact when the semi-flexible RF cable is bent to a large extent, specifically: in the field of mobile communication antennas, the requirements for intermodulation indicators of radio frequency devices are particularly high, and the third-order intermodulation indicators of base station antennas The minimum requirement is -107dBm (2*43dBm input). After the conventional cable medium is bent, the mechanical stress in the bent part is difficult to eliminate, which will cause or increase the risk of reaching the intermodulation index after the cable is connected to the RF port.

Or this will lead to or increase the difficulty of achieving the intermodulation index after the cable is connected to the RF port; even if some RF devices with special structures can realize automatic welding, it is obviously difficult to meet the increasingly high quality requirements of hardware products in mobile communication technology. high demands

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