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CN-121978403-A - Nonlinear harmonic testing device

CN121978403ACN 121978403 ACN121978403 ACN 121978403ACN-121978403-A

Abstract

The application provides a nonlinear harmonic testing device, and relates to the technical field of radio frequency nonlinear testing. The device comprises a first circuit board, a second circuit board, a flexible circuit board and a crimping piece, wherein the first circuit board and the second circuit board are oppositely arranged, at least part of the second circuit board and the first circuit board are positioned on the same layer, two ends of the flexible circuit board are respectively and correspondingly connected with the first circuit board and the second circuit board, the crimping piece is arranged on one side of the first circuit board and one side of the second circuit board in a straddling mode and is electrically connected with the first circuit board and the second circuit board, the flexible circuit board and the crimping piece are oppositely arranged, and the crimping piece is used for being crimped with a piece to be tested. According to the embodiment of the application, the signal current can vertically pass through the to-be-tested piece, so that the current trend of the to-be-tested piece in equipment is simulated, the test error caused by the current direction difference is reduced, the authenticity of nonlinear harmonic test is ensured, and the flexible circuit board is additionally arranged to expand the harmonic detection range.

Inventors

  • ZHUANG TIANYU
  • DING KAIMING
  • CHEN XIONG
  • LIU SHENGJUN
  • WANG HAIYING

Assignees

  • 华勤技术股份有限公司

Dates

Publication Date
20260505
Application Date
20260403

Claims (10)

  1. 1. A nonlinear harmonic testing apparatus, comprising: A first circuit board (100); A second circuit board (200), wherein the first circuit board (100) is arranged opposite to the second circuit board (200), and at least part of the second circuit board (200) and the first circuit board (100) are positioned on the same layer; a flexible circuit board (300), wherein two ends of the flexible circuit board (300) are respectively and correspondingly connected with the first circuit board (100) and the second circuit board (200); The crimping piece (400), crimping piece (400) stride to establish first circuit board (100) with one side of second circuit board (200) and all with first circuit board (100) with second circuit board (200) electricity is connected, flexible circuit board (300) with crimping piece (400) set up in opposite directions, crimping piece (400) are used for with await measuring piece (10) crimping.
  2. 2. The nonlinear harmonic testing apparatus in accordance with claim 1, wherein the crimp (400) is detachably connected with at least one of the second circuit board (200) and the first circuit board (100).
  3. 3. The nonlinear harmonic testing apparatus in accordance with claim 2, wherein the pressure bonding member (400) comprises a first pressure bonding bar (410) and a second pressure bonding bar (420), the first pressure bonding bar (410) is disposed on the first circuit board (100) and indirectly coupled with a first transmission line (110) thereon, the second pressure bonding bar (420) is disposed on the second circuit board (200) and indirectly coupled with a second transmission line (210) thereon, a portion of the second pressure bonding bar (420) is suspended above the first pressure bonding bar (410), and the part to be tested (10) is pressure bonded between the first pressure bonding bar (410) and the second pressure bonding bar (420).
  4. 4. A nonlinear harmonic testing apparatus according to claim 3, wherein the second bead (420) comprises a first section (421), a second section (422) and a third section (423) connected in sequence, the first section (421) and the first bead (410) being arranged opposite in a first direction, the second section (422) being arranged obliquely, the third section (423) and the first bead (410) being arranged opposite in a second direction, and the third section (423) being suspended on the second transmission line (210) in the first direction, wherein the first direction is perpendicular to the second direction.
  5. 5. The nonlinear harmonic testing apparatus in accordance with claim 3 or 4, further comprising a first base (500) and a second base (600) disposed opposite to each other, the first circuit board (100) being disposed on the first base (500), the second circuit board (200) being disposed on the second base (600), and a portion of the second base (600) extending to the relief portion (501) of the first base (500) such that at least a portion of the second circuit board (200) is located on the same layer as the first circuit board (100).
  6. 6. The nonlinear harmonic testing apparatus in accordance with claim 5, wherein the second base (600) is further provided with a clamping groove (601), at least a portion of the second batten (420) is disposed in the clamping groove (601), and the clamping groove (601) is located at a side of the second base (600) facing the first base (500).
  7. 7. The nonlinear harmonic testing apparatus according to any one of claims 1-4, wherein the second circuit board (200) is moved relative to the first circuit board (100) in a height direction of the first circuit board (100).
  8. 8. The nonlinear harmonic testing apparatus according to any one of claims 1-4, wherein two ends of the flexible circuit board (300) are respectively and correspondingly electrically connected to the reference stratum (101) of the first circuit board (100) and the reference stratum (101) of the second circuit board (200).
  9. 9. The nonlinear harmonic testing apparatus in accordance with claim 5, further comprising a test bench on which the first pedestal (500) is mounted and a moving arm on which the second pedestal (600) is mounted at a moving end thereof, the moving arm being configured to drive the second pedestal (600) to move in a direction approaching or moving away from the first pedestal (500) to apply pressure to the part (10) under test.
  10. 10. The nonlinear harmonic testing apparatus in accordance with claim 9, further comprising a nonlinear testing module, wherein the first circuit board (100) and the second circuit board (200) are each electrically connected to the nonlinear testing module, and wherein the nonlinear testing module is configured to input a fundamental wave signal to the first circuit board (100) and receive a nonlinear signal through the second circuit board (200).

Description

Nonlinear harmonic testing device Technical Field The application relates to the technical field of radio frequency nonlinear testing, in particular to a nonlinear harmonic testing device. Background When the high-frequency signal passes through the electronic device, a harmonic signal which is several times of the original signal frequency can be generated. In wireless electronics, non-ideal harmonic signals generated in the signal transmission link can cause radiation spurious disturbances that interfere with other communication system reception signals. The to-be-measured piece in the radio frequency front-end equipment is a main grounding current bearing structure, and nonlinear harmonic waves are easy to generate. In the related art, the harmonic testing device comprises a testing circuit board, and a piece to be tested is adhered or welded to the testing circuit board to realize signal transmission. Or the harmonic testing device comprises a butt-pressing structure based on a metal cavity, the to-be-tested piece is pressed in the butt-pressing plate, the fundamental wave signal is input from one end of the cavity and transmitted to the to-be-tested piece, and the excited nonlinear harmonic component is reflected back to the input port so as to realize signal transmission. However, the test circuit board cannot simulate the actual assembly condition of the to-be-tested piece, the opposite-pressing structure is a single-port device, the opposite-pressing structure is not matched with the signal transmission path of the actual to-be-tested piece, the actual assembly cannot be simulated, and the detection range of the harmonic wave is narrow. Disclosure of Invention The nonlinear harmonic testing device provided by the application is convenient for the to-be-tested piece to simulate the real assembly condition, and the detection range is enlarged. In order to achieve the above object, the technical scheme of the present application is as follows: The application provides a nonlinear harmonic testing device which comprises a first circuit board, a second circuit board, a flexible circuit board and a crimping piece, wherein the first circuit board and the second circuit board are oppositely arranged, at least part of the second circuit board and the first circuit board are positioned on the same layer, two ends of the flexible circuit board are respectively and correspondingly connected with the first circuit board and the second circuit board, the crimping piece is arranged on one side of the first circuit board and one side of the second circuit board in a straddling mode and is electrically connected with the first circuit board and the second circuit board, the flexible circuit board and the crimping piece are oppositely arranged, and the crimping piece is used for being crimped with a piece to be tested. In one possible implementation manner, the nonlinear harmonic testing device provided by the embodiment of the application, the crimping piece is detachably connected with at least one of the second circuit board and the first circuit board. In one possible implementation manner, the nonlinear harmonic testing device provided by the embodiment of the application comprises a first pressing strip and a second pressing strip, wherein the first pressing strip is arranged on the first circuit board and is in wired coupling with a first transmission line on the first circuit board, the second pressing strip is arranged on the second circuit board and is in wired coupling with a second transmission line on the second circuit board, a part of the second pressing strip is suspended above the first pressing strip, and the to-be-tested piece is pressed between the first pressing strip and the second pressing strip. In a possible implementation manner, the second pressing strip comprises a first section, a second section and a third section which are sequentially connected, wherein the first section and the first pressing strip are oppositely arranged in a first direction, the second section is obliquely arranged, the third section and the first pressing strip are oppositely arranged in a second direction, the third section is suspended on a second transmission line in the first direction, and the first direction is perpendicular to the second direction. In a possible implementation manner, the nonlinear harmonic testing device provided by the embodiment of the application further comprises a first base and a second base which are oppositely arranged, wherein the first circuit board is arranged on the first base, the second circuit board is arranged on the second base, and part of the second base extends into the avoidance part of the first base so that at least part of the second circuit board and the first circuit board are positioned on the same layer. In a possible implementation manner, in the nonlinear harmonic testing device provided by the embodiment of the application, a clamping groove is further formed