Auxiliary device for L wave band test

Abstract

The utility model provides an auxiliary device for an L wave band test. According to the auxiliary device for the L wave band test, an installation shell is installed at the position, close to one side, of the top of a test board, an input head is installed on one side of the installation shell through an input line, a driving amplifier is installed at the other end of the input line, and the output end of the driving amplifier is connected with the input end of a final amplifier; and the output end of the final-stage amplifier is connected with the input end of the directional coupler. According to the auxiliary device for the L wave band test, better linearity and larger dynamic range are achieved through the design method, better harmonic wave, clutter suppression, gain flatness and intermodulation indexes can be obtained, the L wave band test frequency source generates two paths of signal output, the two paths of signals can be controlled through the upper computer, and the test accuracy is improved. The frequency consistency and the power consistency are good, good out-of-band rejection is achieved, and the accuracy of L-band test data is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of L-band testing, in particular to an auxiliary device for L-band testing. Background Art

[0002] In radio technology, the term L-band has two meanings. One is the division of the electromagnetic wave spectrum, such as long wave, short wave, ultra-short wave and other bands. The other is the division of the operating frequency range of transmitters, receivers and other equipment.

[0003] When testing the L-band, the L-band is input into the band tester, and then the output band is received by the receiving end on one side of the tester. Finally, the specific information of the test can be obtained through the stability of the received band.

[0004] Traditional L-band testers generally perform single-channel testing and the signal strength is rated. During the test, there will be certain losses, which will affect the accuracy of the test data.

[0005] Therefore, it is necessary to provide an auxiliary device for L-band testing to solve the above technical problems. Utility Model Content

[0006] The utility model provides an auxiliary device for L-band testing, which solves the problem that a traditional L-band tester generally tests through a single channel and the signal strength is rated, thereby affecting the accuracy of test data.

[0007] In order to solve the above technical problems, the utility model provides an auxiliary device for L-band testing, comprising: a test bench;

[0008] A mounting shell, wherein the mounting shell is mounted on a top of the test bench near one side, an input head is mounted on one side of the mounting shell through an input line, a driving amplifier is mounted on the other end of the input line, an output end of the driving amplifier is connected to an input end of a final amplifier, an output end of the final amplifier is connected to an input end of a directional coupler, an output end of the directional coupler is connected to an input end of an isolator, an output end of the isolator is connected to one end of the mounting line, a connecting line is mounted on the other end of the mounting line through a docking connector, two shunt lines are mounted on the other end of the connecting line through a three-way connector, and a first test channel and a second test channel are mounted on the other ends of the two shunt lines, respectively;

[0009] A tester housing, the tester housing is installed at a position near the other side of the top of the test bench, a partition plate is installed at the bottom middle position of the inner wall of the tester housing, and a band receiver is installed on one side of the tester housing;

[0010] The first test channel and the second test channel are installed inside the tester housing. The other ends of the first test channel and the second test channel are connected to the band receiver. The partition plate is located between the first test channel and the second test channel. The L-band test power amplifier is used for the transmitting front end in the XX device. The carrier signal is amplified by the power amplifier to stabilize its output power at 43dBm, providing the entire system with a carrier signal with high stability and low phase noise. The coupled output is used for sampling to achieve output power indication and RF detection. The L-band test frequency source is in the XX communication test equipment to provide the system with two transmission signals.

[0011] Preferably, an operation screen is installed on the front of the mounting shell and the tester shell, the first test channel includes a signal input head, the other end of the signal input head is installed with an electric adjustment attenuator through a PLL device, and the other end of the electric adjustment attenuator is installed with a band shifter through a first TT attenuator.

[0012] Preferably, an amplifier is installed at the other end of the band transmitter, and a second TT attenuator is installed at the other end of the amplifier;

[0013] The other end of the second TT attenuator is connected to the band receiver via a line.

[0014] Preferably, the partition plate comprises a supporting layer, a first signal shielding layer is installed on one side of the supporting layer, a heat insulation layer is installed on the other side of the supporting layer, an antistatic layer is installed on the other side of the heat insulation layer, and a second signal shielding layer is installed on the other side of the antistatic layer;

[0015] The supporting layer is wood or plastic material.

[0016] Preferably, a sound insulation frame is installed on the top of the test bench, and a mounting opening is opened at the bottom of one side of the sound insulation frame;

[0017] The installation port is convenient for the input line to pass through. For details, refer to Figure 1 .

[0018] Preferably, a folding cover is rotatably connected to the top of the sound insulation frame, and a handle is installed on the front of the folding cover;

[0019] Reference for the position and shape of the sound insulation frame and folding cover Figure 1 .

[0020] Compared with the related art, the auxiliary device for L-band testing provided by the utility model has the following advantages:

[0021] Beneficial effects:

[0022] The utility model provides an auxiliary device for L-band testing. In order to increase the accuracy of L-band test data, the L-band signal is first injected into the interior of a driving amplifier through an input head and an input line, and then transmitted to the interior of a directional coupler through a final amplifier. The amplified L-band signal is then input into the interior of a first test channel and a second test channel through an isolator through an installation line and a three-way head, and the band tested by the first test channel and the second test channel is transmitted to a band receiver, and then statistics are performed through the band receiver. The L-band test power amplifier inside the installation shell adopts a cascade mode of driving amplification and final power amplifier, which can make the gain reach 53dB. The front-end driving amplifier amplifies the input signal into a medium-power signal driving amplifier. The final stage power amplifier works, and the P-1 of the final stage power amplifier is as high as 50.6dBm, so that the output power can reach 200W. The isolator can effectively prevent signal interference and leakage, and ensure the accuracy and stability of the signal. The amplified L-band is tested through the first test channel and the second test channel. More accurate and comprehensive data can be obtained. This design method has better linearity and a larger dynamic range, and can obtain better harmonics, clutter suppression, gain flatness and intermodulation indicators. The L-band test frequency source generates two signal outputs, which can be controlled by the upper computer. The frequency consistency and power consistency are good, and it has good out-of-band suppression, which improves the accuracy of the L-band test data. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic structural diagram of a preferred embodiment of the auxiliary device for L-band testing provided by the utility model;

[0024] Figure 2 A structural schematic diagram of a mounting shell is provided for the utility model;

[0025] Figure 3 A structural schematic diagram of the final stage amplification is provided for the utility model;

[0026] Figure 4 A structural schematic diagram of a tester housing is provided for the utility model;

[0027] Figure 5 The utility model provides a structural schematic diagram of an antistatic layer.

[0028] Numbers in the figure: 1, test bench, 2, installation port, 3, sound insulation frame, 4, folding cover, 5, handle, 6, input head, 7, input line, 8, installation shell, 9, connecting line, 10, shunt line, 11, first test channel, 111, signal entry head, 112, PLL device, 113, electrically adjustable attenuator, 114, first TT attenuator, 115, band device, 116, amplifier, 117, second TT attenuator, 12, tester shell, 13, band receiver, 14, second test channel, 15, three-way head, 16, docking head, 17, installation line, 18, operation screen, 19, drive amplifier, 20, final amplifier, 21, directional coupler, 22, isolator, 23, partition board, 231, support layer, 232, first signal shielding layer, 233, second signal shielding layer, 234, antistatic layer, 235, thermal insulation layer. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0030] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 ,in, Figure 1 A schematic structural diagram of a preferred embodiment of the auxiliary device for L-band testing provided by the utility model; Figure 2 A structural schematic diagram of a mounting shell is provided for the utility model; Figure 3 A structural schematic diagram of the final stage amplification is provided for the utility model;

[0031] Figure 4 A structural schematic diagram of a tester housing is provided for the utility model; Figure 5 The utility model provides a structural schematic diagram of the antistatic layer. The auxiliary device for L-band testing comprises: a test bench 1;

[0032] A mounting shell 8 is mounted on the top of the test bench 1 near one side, an input head 6 is mounted on one side of the mounting shell 8 through an input line 7, a driving amplifier 19 is mounted on the other end of the input line 7, an output end of the driving amplifier 19 is connected to an input end of a final amplifier 20, an output end of the final amplifier 20 is connected to an input end of a directional coupler 21, an output end of the directional coupler 21 is connected to an input end of an isolator 22, an output end of the isolator 22 is connected to one end of a mounting line 17, a connecting line 9 is mounted on the other end of the mounting line 17 through a docking connector 16, two shunt lines 10 are mounted on the other end of the connecting line 9 through a three-way connector 15, and a first test channel 11 and a second test channel 14 are mounted on the other ends of the two shunt lines 10, respectively;

[0033] A tester housing 12, the tester housing 12 is installed at a position near the other side of the top of the test bench 1, a partition plate 23 is installed at the bottom middle position of the inner wall of the tester housing 12, and a band receiver 13 is installed on one side of the tester housing 12;

[0034] The first test channel 11 and the second test channel 14 are installed inside the tester housing 12. The other ends of the first test channel 11 and the second test channel 14 are connected to the band receiver 13. The partition plate 23 is located between the first test channel 11 and the second test channel 14. The L-band test power amplifier is used for the transmitting front end in the XX device. The carrier signal is amplified by the power amplifier to stabilize its output power at 43dBm, providing the entire system with a carrier signal with high stability and low phase noise. The coupled output is used for sampling to achieve output power indication and radio frequency detection. The L-band test frequency source is in the XX communication test equipment to provide the system with two transmission signals. The temperature compensated crystal oscillator provides a reference signal for the phase-locked loop. The phase-locked loop lock signal output frequency is 1805-1880MHz. The host computer switches the frequency and steps within the range of 1805-1880MHz. The host computer controls the electronic attenuation for power calibration. The power consistency of the two signals is good.

[0035] The front of the installation shell 8 and the tester housing 12 are both equipped with an operation screen 18. The first test channel 11 includes a signal input head 111. The other end of the signal input head 111 is equipped with an electric adjustment attenuator 113 through a PLL device 112. The other end of the electric adjustment attenuator 113 is equipped with a band changer 115 through a first TT attenuator 114.

[0036] The components of the first test channel 11 and the second test channel 14 are the same.

[0037] An amplifier 116 is installed at the other end of the band changer 115, and a second TT attenuator 117 is installed at the other end of the amplifier 116;

[0038] The other end of the second TT attenuator 117 is connected to the band receiver 13 through a line.

[0039] The partition plate 23 comprises a supporting layer 231, a first signal shielding layer 232 is installed on one side of the supporting layer 231, a heat insulating layer 235 is installed on the other side of the supporting layer 231, an antistatic layer 234 is installed on the other side of the heat insulating layer 235, and a second signal shielding layer 233 is installed on the other side of the antistatic layer 234;

[0040] The supporting layer 231 is a wood board or a plastic material, and the heat insulating layer 235 can play a heat insulating effect.

[0041] A sound insulation frame 3 is installed on the top of the test bench 1, and a mounting opening 2 is opened at the bottom of one side of the sound insulation frame 3;

[0042] Installation port 2 is convenient for input line 7 to pass through. Figure 1 , the material of the sound insulation frame 3 and the partition board 23 is the same.

[0043] The top of the sound insulation frame 3 is rotatably connected to a folding cover 4, and a handle 5 is installed on the front of the folding cover 4;

[0044] The position and shape of the sound insulation frame 3 and the folding cover 4 are referenced Figure 1 The handle 5 is used to facilitate opening the folding cover 4.

[0045] The working principle of the auxiliary device for L-band testing provided by the utility model is as follows:

[0046] First, the L-band signal is injected into the interior of the driver amplifier 19 through the input head 6 and the input line 7, and then transmitted to the interior of the directional coupler 21 through the final amplifier 20. The amplified L-band signal is then input into the interior of the first test channel 11 and the second test channel 14 through the isolator 22 through the installation line 17 and the three-way head 15. The band tested by the first test channel 11 and the second test channel 14 is transmitted to the band receiver 13, and then statistics are performed through the band receiver 13. The L-band test power amplifier inside the installation shell 8 adopts a cascade mode of driver amplification and final power amplifier, which can make the gain reach 53dB. The front-end driver amplifier amplifies the input signal into a medium-power signal to drive the final power amplifier to work. The P-1 of the final power amplifier is as high as 50.6dBm, so that the output power can reach 200W. The isolator 22 can effectively prevent signal interference and leakage, and ensure the accuracy and stability of the signal. The amplified L-band is tested in dual channels through the first test channel 11 and the second test channel 14, so that more accurate and comprehensive data can be obtained.

[0047] Compared with the related art, the auxiliary device for L-band testing provided by the utility model has the following advantages:

[0048] Beneficial effects:

[0049] In order to increase the accuracy of the L-band test data, the L-band signal is first injected into the driver amplifier 19 through the input head 6 and the input line 7, and then transmitted to the directional coupler 21 through the final amplifier 20. The amplified L-band signal is then input into the first test channel 11 and the second test channel 14 through the isolator 22 through the installation line 17 and the three-way head 15. The band tested by the first test channel 11 and the second test channel 14 is transmitted to the band receiver 13, and then statistics are performed through the band receiver 13. The L-band test power amplifier inside the installation shell 8 adopts a driver amplifier and a final power amplifier cascade, which can make the gain reach 53dB. The front-end driver amplifier amplifies the input signal into a medium-power signal driver. The final stage power amplifier is operated, and the P-1 of the final stage power amplifier is as high as 50.6dBm, so that the output power can reach 200W. The isolator 22 can effectively prevent signal interference and leakage, and ensure the accuracy and stability of the signal. The amplified L-band is tested through the first test channel 11 and the second test channel 14 in a dual-channel manner, and more accurate and comprehensive data can be obtained. This design method has better linearity and a larger dynamic range, and can obtain better harmonic and clutter suppression, gain flatness and intermodulation indicators. The L-band test frequency source generates two signal outputs, which can be controlled by the upper computer. The frequency consistency and power consistency are good, and it has good out-of-band suppression, which improves the accuracy of the L-band test data.

[0050] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An auxiliary device for L-band testing, characterized in that: include: Test bench; A mounting shell, wherein the mounting shell is mounted on a top of the test bench near one side, an input head is mounted on one side of the mounting shell through an input line, a driving amplifier is mounted on the other end of the input line, an output end of the driving amplifier is connected to an input end of a final amplifier, an output end of the final amplifier is connected to an input end of a directional coupler, an output end of the directional coupler is connected to an input end of an isolator, an output end of the isolator is connected to one end of the mounting line, a connecting line is mounted on the other end of the mounting line through a docking connector, two shunt lines are mounted on the other end of the connecting line through a three-way connector, and a first test channel and a second test channel are mounted on the other ends of the two shunt lines, respectively; The tester housing is installed on the top of the test bench near the other side, a partition plate is installed at the bottom middle position of the inner wall of the tester housing, and a band receiver is installed on one side of the tester housing.

2. The L-band test auxiliary device according to claim 1, characterized in that: The front of the installation shell and the tester shell are both equipped with an operation screen. The first test channel includes a signal input head. The other end of the signal input head is equipped with an electric adjustment attenuator through a PLL device. The other end of the electric adjustment attenuator is equipped with a band shifter through a first TT attenuator.

3. The L-band test auxiliary device according to claim 2, characterized in that: An amplifier is installed at the other end of the band transmitter, and a second TT attenuator is installed at the other end of the amplifier.

4. The L-band test auxiliary device according to claim 1, characterized in that: The partition plate comprises a supporting layer, a first signal shielding layer is installed on one side of the supporting layer, a heat insulation layer is installed on the other side of the supporting layer, an antistatic layer is installed on the other side of the heat insulation layer, and a second signal shielding layer is installed on the other side of the antistatic layer.

5. The L-band test auxiliary device according to claim 1, characterized in that: A sound insulation frame is installed on the top of the test bench, and a mounting opening is opened at the bottom of one side of the sound insulation frame.

6. The L-band test auxiliary device according to claim 5, characterized in that: The top of the sound insulation frame is rotatably connected with a folding cover, and a handle is installed on the front of the folding cover.

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