CN211656163U

CN211656163U - 32 port power tolerance test system

Info

Publication number: CN211656163U
Application number: CN202020758099.2U
Authority: CN
Inventors: 李荣明; 唐静; 吴雪; 朱斌
Original assignee: Nanjing Hualuo Communication Technology Co ltd
Current assignee: Nanjing Hualuo Communication Technology Co ltd
Priority date: 2020-05-10
Filing date: 2020-05-10
Publication date: 2020-10-09
Anticipated expiration: 2030-05-10

Abstract

The utility model discloses a 32 port power tolerance test system, the input port connection of instrument signal source and broadband power amplifier, the output port of broadband power amplifier with the input port connection who closes the way module, the output port that closes the way module is connected with switch unit's common port, switch unit's an output port and coupling unit's input port connection, switch unit's an output port and terminal power load are connected, coupling unit's output port connection is surveyed the piece, the power meter is connected with coupling unit's coupling end, the computer is connected with switch unit's control end, the computer still with the instrument signal source, the power meter is connected. The utility model discloses satisfy general power capacity test system's test function to open 32 power test ports on this basis, can send 32 port carrier power simultaneously, improve production efficiency. The power capacity testing system is low in loss and cost and efficient.

Description

32 port power tolerance test system

Technical Field

The utility model relates to the field of communication technology, more specifically say, in particular to 32 port power tolerance test system.

Background

With the development of the 5G technology, in order to meet the requirements of ensuring the communication capability and the call quality of the system and improve the reliability and the safety of the mobile communication system, a power tolerance test must be performed on the passive device. The power tolerance test is to examine the bearing capacity of the product to the input power to judge the power-resisting performance of the device. In a wireless communication system, the utilization rate of passive devices is greatly increased, and the test efficiency is high, so that the test requirements of suppliers can be met.

The power capacity test system popularized by the communication enterprises at present has limitations in the realization of systems and functions, and is mainly reflected in the limitation of the number of test channels.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a low-loss, low-cost high-efficient 32 port power tolerance test system.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a32-port power tolerance testing system comprises an instrument signal source, a broadband power amplifier, a combining module, a switch unit, a coupling unit, a 32-port antenna, a computer and a power meter, wherein the instrument signal source is connected with an input port of the broadband power amplifier, an output port of the broadband power amplifier is connected with an input port of the combining module, an output port of the combining module is connected with a common port of the switch unit, an output port of the switch unit is connected with an input port of the coupling unit, an output port of the switch unit is connected with a terminal power load, an output port of the coupling unit is connected with a tested piece, the power meter is connected with a coupling end of the coupling unit, the computer is connected with a control end of the switch unit, and the computer is further connected with the instrument signal source and the power meter.

Further, the model of the meter signal source is keysight N5172B.

Furthermore, the combining module comprises a one-to-four combiner and four one-to-eight combiners, an input port of the one-to-four combiner and input ports of the four one-to-eight combiners are both connected with the broadband power amplifier, common ends of the four one-to-eight combiners are connected with output ports of the one-to-four combiner, and output ports of the four one-to-eight combiners are connected with input ports of the switch unit.

Further, the switch unit is composed of thirty-two one-to-two radio frequency switches.

Further, the coupling unit is composed of thirty-two dual directional couplers.

Compared with the prior art, the utility model has the advantages of: the utility model discloses satisfy general power capacity test system's test function to open 32 power test ports on this basis, can send 32 port carrier power simultaneously, improve production efficiency. The power capacity testing system is low in loss and cost and efficient.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a 32-port power margin test system of the present invention.

Fig. 2 is a schematic diagram of a combiner module in the 32-port power margin test system of the present invention.

Detailed Description

The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, and the scope of the present invention can be more clearly and clearly defined.

Referring to fig. 1, the present invention provides a 32-port power tolerance testing system, which includes an instrument signal source 101, a broadband power amplifier 201, a combining module 301, a switch unit 401, a coupling unit 501, a 32-port antenna 601, a computer 701 and a power meter 801, wherein the instrument signal source 101 is connected to an input port of the broadband power amplifier 201, an output port of the broadband power amplifier 201 is connected to an input port of the combining module 301, an output port of the combining module 301 is connected to a common port of the switch unit 401, an output port of the switch unit 401 is connected to an input port of the coupling unit 501, an output port of the switch unit 401 is connected to a terminal power load, an output port of the coupling unit 501 is connected to a tested device, the power meter 801 is connected to a coupling end of the coupling unit 501, the computer 701 is connected to a control end of the switch unit 401, the computer 701 is also connected with the meter signal source 101 and the power meter 801, and the 32-port antenna 601 is connected with the coupling unit 501.

The model of the instrument signal source 101 is keysight N5172B, signals of different frequency bands can be sent out according to different requirements of the computer 701, and the instrument signal source is a vector signal generator and has excellent ACLR performance. Accurate repeatability; the working frequency range should meet the requirement of generating China mobile frequency band; the instrument signal source 101 should have good phase noise performance and generate high-quality single carrier and multi-carrier signals, and the frequency bands supported by the instrument signal source 101 are as follows: 9kHz to 6GHz, output level control range: -144dBm- +19 dBm.

The broadband power amplifier 201 can be selected in the prior art according to needs, needs to support a frequency band of 1GHZ-6GHZ, has an equipment protection function, comprises over-excitation protection, overvoltage protection and over-temperature protection, and has a power amplifier mode supporting continuous waves and pulse waves, the average power is 200W, and the test power of each port can reach 32 dBm.

Referring to fig. 2, the combining module 301 includes a one-to-four combiner 3011 and four one-to-eight combiners 3012, an input port of the one-to-four combiner 3011 and input ports of the four one-to-eight combiners 3012 are all connected to the broadband power amplifier 201, common ends of the four one-to-eight combiners 3012 are connected to output ports of the one-to-four combiner 3011, and output ports of the four one-to-eight combiners 3012 are connected to input ports of the switch unit 401. A one-to-four combiner 3011 requires support for frequency bands: 700MHZ-3G, standing wave less than or equal to 1.4, insertion loss less than or equal to 0.6dB, power resistance: 500W, one-to-eight combiner 3012 requires to support frequency bands: 700MHZ-3G, standing wave less than or equal to 1.4, insertion loss less than or equal to 1.5dB, power resistance: 100W.

The switch unit 401 is composed of thirty-two one-to-two radio frequency switches, wherein 1 channel of the one-to-two radio frequency switch is connected with the coupler in the coupling unit, and the other 1 channel is connected with the matched power load.

The coupling unit 501 is composed of thirty-two dual directional couplers, and detects the magnitude of the transmitted power, and the reverse power is used for detecting the change of the standing-wave ratio of the tested piece.

The power meter 801 detects that the coupling unit receives the forward power and the reverse power, is connected with a USB interface of the computer, and uploads power detection data to the upper computer.

The computer 701 can control the switching of the test frequency, power and channel of the whole system, perform data analysis on the AD signal acquired by the power (the existing analysis software can be adopted), and visually display information parameters of the system, such as forward power, reverse power, standing-wave ratio, and the like.

The working principle of the utility model is that the output end of the instrument signal source 101 is connected with the broadband power amplifier 201, the output signal is amplified by the power amplifier, the combiner module 301 divides the received transmitting signal into 32 branches, and the 32 channels are ensured to transmit carrier power at the same time; in addition, each path of port is connected with a 1-in-2 radio frequency switch in series. A channel 1 of the radio frequency switch is connected with the bi-directional coupler, and a channel 2 is connected with a terminal power load; when the 32 test ports are all connected with the tested piece, the computer controls the switch units to be all switched to the channel 1; when the 32 test ports are only used for part of the ports, the computer controls the switch unit 401 to switch the port of the tested piece to be tested to the channel 1, while the unused test port switch unit is switched to the channel 2, and all the terminal power loads are loaded; the transmitting power is transmitted to the input port of the tested piece through the output port of the double directional coupler with low loss. When the power capacity of the passive device is tested, the forward coupling port and the reverse coupling port of the double directional coupler are connected with the power meter to carry out power detection, and the computer carries out standing wave variable quantity analysis on the collected power so as to judge whether the power capacity test of the tested piece meets the test requirement.

Although the embodiments of the present invention have been described with reference to the accompanying drawings, various changes and modifications can be made by the owner within the scope of the appended claims, and the protection scope of the present invention should not be exceeded by the claims.

Claims

1. A 32-port power margin test system, characterized by: the device comprises an instrument signal source, a broadband power amplifier, a combining module, a switch unit, a coupling unit, a 32-port antenna, a computer and a power meter, wherein the instrument signal source is connected with an input port of the broadband power amplifier, an output port of the broadband power amplifier is connected with an input port of the combining module, an output port of the combining module is connected with a public port of the switch unit, an output port of the switch unit is connected with an input port of the coupling unit, an output port of the switch unit is connected with a terminal power load, an output port of the coupling unit is connected with a tested piece, the power meter is connected with a coupling end of the coupling unit, the computer is connected with a control end of the switch unit, and the computer is also connected with the instrument signal source and the power meter.

2. The 32-port power margin test system of claim 1, wherein: the model of the instrument signal source is keysight N5172B.

3. The 32-port power margin test system of claim 1, wherein: the combining module comprises a one-in-four combiner and four one-in-eight combiners, the input port of the one-in-four combiner and the input ports of the four one-in-eight combiners are connected with the broadband power amplifier, the public ends of the four one-in-eight combiners are connected with the output port of the one-in-four combiner, and the output ports of the four one-in-eight combiners are connected with the input port of the switch unit.

4. The 32-port power margin test system of claim 1, wherein: the switch unit is composed of thirty-two one-to-two radio frequency switches.

5. The 32-port power margin test system of claim 1, wherein: the coupling unit consists of thirty-two dual directional couplers.