Signal test system and method without radio frequency test socket with symmetrical tuning unit

Abstract

The present invention is a non-radio frequency test seat signal test system with a symmetrical tuning unit, which is applied to a test system without a radio frequency test seat; when in use, a radio frequency test probe, a symmetrical tuning unit and a test instrument module are used, and the radio frequency test probe connects the antenna The matching circuit is connected to the symmetrical tuning unit, the symmetrical tuning unit is connected to the test instrument module, the symmetrical tuning unit is used to match the antenna matching circuit, and a symmetrical two-port radio frequency path is formed between the radio frequency chip and the test instrument. The symmetrical tuning unit and the antenna matching circuit form a symmetrical radio frequency path, which ensures that the return loss of the two directions of the radio frequency path is very close, so as to achieve the purpose of ensuring the authenticity of the detection effect when detecting from one direction, and ensure the dual-port network of the entire radio frequency path Excellent RF performance, on the basis of reducing RF test sockets, reduces the operational complexity of impedance matching, saves adjustment time and verification time, and ensures the effectiveness of the detection effect.

Description

technical field [0001] The invention relates to the technical field of radio frequency signal testing, in particular to a signal testing system and method without a radio frequency test seat with a symmetrical tuning unit. Background technique [0002] In recent years, with the continuous development of communication technology, the popularity of wireless products has become higher and higher, and the number of wireless products produced in the world is also increasing every year, and people's production and life are becoming more and more convenient. Wireless products (represented by mobile phones) mainly refer to the communication frequency of 300kHz ~ 300GHz, and the communication signals in this frequency range are also called radio frequency signals. In order to ensure the quality of the RF signal on the motherboard of wireless products and meet a series of the most basic wireless communication requirements of wireless products, it is usually necessary to perform board-...

AI Technical Summary

Problems solved by technology

At present, more RF test sockets are added to the motherboard of wireless products through the design and development stage; the number of RF test sockets on the motherboard of wireless products in the 2-4G era is calculated in single digits, and this number will rise to 10 in the 5G era The above is to meet the needs of traditional board-level RF testing; for wireless products with increasingly complex designs, higher performance, and better user experience, the design space on the motherboard is very limited, and more than 10 RF test sockets It is only to meet the test requirements of ensuring the quality of radio frequency signals before the launch of wireless products, and does not improve the quality of sending and receiving radio frequency signals on the board of wireless products after listing

Instead, it is necessary to reserve more than 10 board-level RF test socket installation spaces on the limited motherboard space in the wireless product design stage, and increase the material cost of wireless products

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