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Phase shift circuit, phase shifter and radiation performance test method and device

A phase-shifting circuit and phase-shifter technology, applied in directions such as antenna radiation patterns, can solve the problems that TD-LTE terminals cannot use radiation receiving performance, calculation, etc.

Inactive Publication Date: 2018-07-03
LEADCORE TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, the reference signal antenna relative phase (Reference Signal Antenna Relative Phase, RSARP) of the main and auxiliary receiving channels of the Time Division Long Term Evolution (TD-LTE) zero-IF receiver architecture has a random ±180° flip characteristics, it is impossible to calculate the relative phase of the reference signal antenna of the stable primary and secondary receiving channel like the Frequency Division Double Long Term Evolution (FDD-LTE) mode, because the relative phase of the reference signal antenna of the TD-LTE receiver The ±180° flip feature makes it impossible for existing TD-LTE terminals to use the radiation two-stage method to complete the radiation receiving performance test

Method used

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  • Phase shift circuit, phase shifter and radiation performance test method and device
  • Phase shift circuit, phase shifter and radiation performance test method and device
  • Phase shift circuit, phase shifter and radiation performance test method and device

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Embodiment 1

[0030] figure 1 A schematic structural diagram of a phase-shifting circuit provided by Embodiment 1 of the present invention. This embodiment is applicable to the relative phase of the main and auxiliary channel reference signal antennas in testing the radiation reception performance of multi-antenna user equipment, such as figure 1 As shown, the phase shifting circuit includes: a clock signal input source 110 , a phase shifter 120 , a main receiving channel 130 and an auxiliary receiving channel 140 .

[0031] The input end of the phase shifter 120 is connected with the output end of the clock signal input source 110, and the first output end of the phase shifter 120 is respectively connected with the in-phase component branch of the main receiving channel 130 and the in-phase component branch of the auxiliary receiving channel 140, The second output end of the phase shifter 120 is respectively connected to the phase shift component branch of the main receiving channel 130 an...

Embodiment 2

[0044] image 3 A flow chart of a method for testing the radiation performance of a phase-shifting circuit provided by Embodiment 2 of the present invention, the method is executed by the phase-shifting circuit and the phase shifter in the above-mentioned embodiment, as image 3 As shown, the test method of the radiation performance specifically includes the following steps:

[0045] Step 310, obtain the relative phase of the reference signal antenna through the phase shifting circuit.

[0046] Wherein, the reference signal antenna relative phase can be the average phase of all resource elements carried by the cell-specific reference signal received by the reference antenna (RX0) within the LTE channel bandwidth and all resource elements carried by the cell-specific reference signal received by the reference antenna (RX1) ( R0) the difference between the average phase. Exemplarily, assuming that the absolute phase of the main receiving channel of the terminal is Phase0 and t...

Embodiment 3

[0051] Figure 4 A schematic structural diagram of a test device for the radiation performance of a phase-shifting circuit provided in Embodiment 3 of the present invention, as shown in Figure 4 As shown, the test device for the radiation performance of the phase shifting circuit includes: a relative phase acquisition module 410 and a two-stage method test module 420 .

[0052] A relative phase acquisition module 410, configured to acquire the reference signal antenna relative phase RSARP through a phase shift circuit;

[0053] The two-stage method testing module 420 is configured to use the radiation two-stage method to test the radiation receiving performance based on the reference signal antenna relative phase acquired by the relative phase acquisition module.

[0054] The above-mentioned device can execute the methods provided by all the foregoing embodiments of the present invention, and has corresponding functional modules and advantageous effects for executing the abo...

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Abstract

An embodiment of the invention discloses a phase shift circuit, a phase shifter and a radiation performance test method and device. The phase shift circuit comprises the phase shifter, a main receiving channel and an auxiliary receiving channel. The input end of the phase shifter is connected with the output end of a clock signal input source; a first output end of the phase shifter is connected with a same-phase component branch of the main receiving channel and a same-phase component branch of the auxiliary receiving channel; and a second output end of the phase shifter is connected with a phase shifting component branch of the main receiving channel and a phase shifting component branch of the auxiliary receiving channel. According to the phase shift circuit, the phase shifter and the radiation performance test method and device, the main receiving channel and the auxiliary receiving channel share one phase shifter to realize signal phase shift, so that generation of random + / - 180degree reversal of reference signal antenna relative phase of the main / auxiliary receiving channel can be prevented, and a TD-LTE terminal can adopt a radiation two-stage method to finish test of radiation reception performance.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of mobile communication testing, in particular to a phase shifting circuit, a phase shifter and a testing method and device for radiation performance. Background technique [0002] The radiation two-stage method is a commonly used test method for testing the radiation reception performance of multi-antenna user equipment in an evolved UMTS Terrestrial Radio Access Network (Evolved UMTS Terrestrial Radio Access Network, E-UTRAN). [0003] In the prior art, the reference signal antenna relative phase (Reference Signal Antenna Relative Phase, RSARP) of the main and auxiliary receiving channels of the Time Division Long Term Evolution (TD-LTE) zero-IF receiver architecture has a random ±180° flip characteristics, it is impossible to calculate the relative phase of the reference signal antenna of the stable primary and secondary receiving channel like the Frequency Division Double Long T...

Claims

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Application Information

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IPC IPC(8): G01R29/10
CPCG01R29/10
Inventor 林代娟张勇陈文杰
Owner LEADCORE TECH
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