Antenna Thimble

The antenna thimble is energized or turned on, most of which are in contact with the copper wall through the oblique downward direction, and the spring bears a small amount, so the inner wall of the copper sleeve is required to be smooth, and most of the current must be conducted through the spring, and the requirements for the spring will be It is very high. The three basic parts of the needle shaft, spring and needle tube are formed by riveting and pre-pressing with precision instruments. There is a precise spring structure inside. The surface coating of the thimble is generally gold-plated, which can be better To improve its anti-corrosion function, mechanical properties, electrical properties, etc. The needle tip has sharp needles, grasping needles, round needles, knife needles, etc.

Antenna thimbles are generally used in precision connections in electronic products such as mobile phones, communications, military, automotive, medical, aerospace and other electronic products, which can improve the corrosion resistance, stability and durability of these connectors. Since the antenna thimble is a very fine probe Therefore, the application in precision connectors can reduce the weight of the connector and the volume of the appearance, which can make the connector more delicate and beautiful.

Compared with the antenna shrapnel, at the same working height, due to the shorter current path, it has smaller distributed capacitance and distributed inductance, especially in the high frequency band, which is more conducive to impedance matching. Based on the same working height, it is much higher than the shrapnel in the self-resonant frequency band. , The loss is smaller, which is conducive to the efficient transmission of high-frequency signals. In the design of the metal frame, the signal transmission can be carried out more flexibly, so that the antenna radiation is farther away from the main board and its components, which is more conducive to the performance of the antenna. The solution is also more flexible. In the design of metal battery cover, metal frame, and ultra-thin model, the space is better utilized. The antenna thimble can realize the connection solution of high current, which is easier to realize the waterproof structure, and the precise and stable connection point is beneficial to the radio frequency. Signal transmission, when used for antenna connectors, a more stable connection point can obtain more stable RF performance without frequency offset, the thimble design saves limited PCB board space during installation, and the thimble internal The contact end of the needle head adopts a bevel design, and the bevel force component ensures a stable contact between the needle and the inner wall of the needle sleeve, so that the thimble is not easy to move during the compression process, and maintains a stable contact impedance. This stable connection point can obtain stable High RF electrical performance, the resonance point of VSWR will not be shifted, and the thimble adopts a detachable floating connection, which does not need to be welded during the installation process, which is convenient for users to disassemble.