Radio frequency switching unit capable of being used for automatic testing of WCDMA (Wideband Code Division Multiple Access) /GSM (Global System for Mobile Communication) terminal radio frequency

Abstract

The invention discloses a radio frequency switching unit which can be applied to automatic testing of WCDMA (Wideband Code Division Multiple Access) / GSM (Global System for Mobile Communication) terminal radio frequency. The radio frequency switching unit is composed of an input and output radio frequency port, radio-frequency coaxial switches, a radio-frequency coaxial attenuator, a power divider, a filter, a circulator, an isolator and a control circuit board, wherein all the devices are connected through semi-rigid radio-frequency coaxial cables. The control circuit board receives a control instruction sent by a PC (Personal Computer) machine through an RS232 (Recommend Standard 232) interface to control the opening / closing state of each switch in the internal part and simultaneously feed back a corresponding instruction to the PC machine for determining whether the closing state of the switches is correct or not. The construction and switching of each test link is realized by controlling the opening / closing state of each radio-frequency switch. The control instruction is clear and simple and is suitable for rapid secondary development to be applied to a corresponding automatic testing system. The radio frequency switching unit completely meets the demand for automatically testing the radio frequency of WCDMA / GSM terminal equipment and has the characteristics of rapid switching, high reliability, high stability, strong capacity of resisting disturbance, simple control method, high cost performance and the like.

Description

technical field [0001] The present invention generally relates to a radio frequency unit, and more specifically relates to a radio frequency switching unit which can be used for WCDMA / GSM terminal radio frequency automatic testing. Background technique [0002] With the continuous development of radio technology and the continuous increase of types of radio equipment, the radio frequency detection of radio equipment is faced with many problems such as low test automation, long detection time, heavy workload, frequent manual hardware connections, etc., and the consistency of test results, inconsistent Indicators such as certainty can no longer meet the increasing accuracy requirements of testing laboratories. With the issuance of my country's mobile communication 3G licenses, 3G mobile communication terminal equipment, especially WCDMA / GSM terminal equipment, has been widely used. Aiming at the problems existing in the detection process and the current testing requirements o...

AI Technical Summary

Problems solved by technology

[0003] For the RF switching unit used in the RF testing of WCDMA / GSM terminals, traditional methods often rely on manual connection switching RF links, or use standard program-controlled switches produced by equipment suppliers such as Agilent, R&S, etc. unit; using manual connection to switch the radio frequency link test time is long, and it is easy to cause human error and low repeatability of test results; use standard program-controlled switching unit to form the radio frequency switching unit of WCDMA / GSM terminal, its disadvantages are The complexity of the system is too high and the investment is huge, which makes the cost of testing remain high

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