C-band dual-channel adjustable detector

Abstract

The present invention relates to the field of signal processing, and discloses a C-band dual-channel adjustable detector including a circuit board, a detector, a main cavity, an insulator, an operational amplifier, a radio frequency insulator and a cavity cover, wherein a detachable cover of the cavity cover is arranged on the top of the main cavity, the circuit board is sintered to the bottom of the main cavity, the detector, the insulator and the operational amplifier are arranged inside the main cavity and are electrically connected to the circuit board, and two detectors and two operational amplifiers are arranged respectively; two radio frequency insulators are connected to the two ends of the main cavity by connecting screws, and the two radio frequency insulators are electrically connected to the circuit board; three insulators are arranged, including: a power supply insulator for supplying power to the C-band dual-channel adjustable detector, and two output insulators for outputting signals; and an output adjustment resistor capable of adjusting the voltage value of the output signal is included in the operational amplifier. The voltage signal output by the C-band dual-channel adjustable detector is adjustable and can process two groups of input signals at the same time.

Description

Technical Field

[0001] The invention relates to the field of detection, and in particular to a C-band dual-channel adjustable detector. Background Art

[0002] Now microwave power amplification technology is developing continuously, and detection circuits have been more and more widely used in the field of microwave power amplification. In a broad sense, detection is usually called demodulation, which is the inverse process of modulation, that is, the process of extracting the modulated signal from the modulated wave. For an amplitude modulated wave, it is the process of extracting the modulated signal from its amplitude change; for an frequency modulated wave, it is the process of extracting the modulated signal from its frequency change; for a phase modulated wave, it is the process of extracting the modulated signal from its phase change.

[0003] In a narrow sense, detection refers to the process of extracting the modulated signal from the envelope of the amplitude modulated wave. This kind of detection is sometimes called envelope detection or amplitude detection.

[0004] The detectors currently used usually output signals directly. When the voltage value of the output signal cannot match the use environment, an external operational amplifier is required to adjust the voltage of the output signal. Summary of the invention

[0005] In order to overcome the problem in the prior art that detectors usually require an external operational amplifier to adapt to the use environment, the present invention provides a C-band dual-channel adjustable detector, which outputs an adjustable voltage signal and can process two sets of input signals simultaneously.

[0006] The present invention provides a C-band dual-channel adjustable detector, which comprises a circuit board, a detector, a main cavity, an insulator, an operational amplifier, a radio frequency insulator and a cavity cover, wherein:

[0007] The removable cavity cover is arranged on the top of the main cavity, the circuit board is sintered to the bottom of the main cavity, the detector, the insulator and the operational amplifier are arranged inside the main cavity and are electrically connected to the circuit board, and two detectors and two operational amplifiers are arranged respectively;

[0008] Two radio frequency insulators are provided, the two radio frequency insulators are connected to two ends of the main cavity through connecting screws, and the two radio frequency insulators are electrically connected to the circuit board;

[0009] The insulators are provided with three components: a power supply insulator for supplying power to the C-band dual-channel adjustable detector, and two output insulators for outputting signals;

[0010] The operational amplifier includes an output adjustment resistor capable of adjusting the voltage value of the output signal.

[0011] Preferably, the two output regulating resistors are arranged directly below the cavity cover.

[0012] Preferably, three through holes are provided on the main cavity, and the three through holes correspond to the three insulators one by one, and the insulators extend to the outside of the main cavity through the corresponding through holes.

[0013] The present invention also provides a method for manufacturing a C-band dual-channel adjustable detector, the method comprising:

[0014] Step 1: Sinter the circuit board to the main cavity using 217°C solder;

[0015] Step 2: Sinter the insulator to the main cavity using 217°C solder;

[0016] Step 3: Solder the operational amplifier and the detector to the circuit board using 183°C solder;

[0017] Step 4: Connect the RF insulator to the main cavity using screws, and weld the RF insulator to the circuit board;

[0018] Step 5: Clean the C-band dual-channel adjustable detector using a gas phase cleaning machine;

[0019] Step 6: Perform a microscopic inspection on the C-band dual-channel adjustable detector after cleaning, and fix the cavity cover to the top of the main cavity.

[0020] Preferably, the sintering method in step one includes: first placing the main cavity on a welding workbench, then placing the circuit board in the main cavity and placing a sufficient amount of 217°C solder between the circuit board and the bottom of the main cavity, and finally heating the welding workbench to 230° and maintaining it for 3 minutes.

[0021] Preferably, the circuit board is provided with a plurality of vias for discharging air between the circuit board and the bottom of the main cavity.

[0022] Preferably, the circuit board is provided with a detector welding position, an operational amplifier welding position, an insulator welding position and a radio frequency insulator welding position.

[0023] In step 2, the insulator is welded to the insulator welding position;

[0024] In step three, the detector is welded to the detector welding position; and the operational amplifier is welded to the operational amplifier welding position.

[0025] According to the above technical solution, the C-band dual-channel adjustable detector has a built-in detection circuit and an operational amplifier circuit. The input signal outputs a target signal after passing through the detection circuit. The target signal enters the operational amplifier circuit. An output adjustment resistor is provided in the operational amplifier circuit. By adjusting the resistance value of the output adjustment resistor, the amplification factor of the operational amplifier circuit can be adjusted, thereby controlling the voltage value of the output signal.

[0026] The C-band dual-channel adjustable detector is provided with two detection amplifier units in parallel, and the two detection amplifier units are independent of each other, so that the C-band dual-channel adjustable detector can process two groups of input signals simultaneously. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 It is a structural schematic diagram of a C-band dual-channel adjustable detector according to a preferred embodiment;

[0029] Figure 2 is a front view of a cavity cover of a preferred embodiment;

[0030] Figure 3 is a schematic diagram of an operational amplifier of a preferred embodiment.

[0031] Description of Reference Numerals

[0032] 1 Circuit board 2 Detector

[0033] 3 Main cavity 31 Power insulator

[0034] 32 Output Isolator 4 Operational Amplifier

[0035] 5 RF insulator 6 cavity cover

[0036] 7 Output adjustment resistor DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0038] In the present invention, unless otherwise stated, directional words contained in the terms such as "facing, back-to-back, horizontal, inclined, front end, rear end, end" merely represent the orientation of the term in normal use, or are common names understood by those skilled in the art, and should not be regarded as limitations on the term.

[0039] See also Figure 1-3A C-band dual-channel adjustable detector is shown, and the C-band dual-channel adjustable detector includes a circuit board 1, a detector 2, a main cavity 3, an insulator, an operational amplifier 4, a radio frequency insulator 5 and a cavity cover 6, wherein:

[0040] The cavity cover 6 is a detachable cover arranged on the top of the main cavity 3, the circuit board 1 is sintered to the bottom of the main cavity 3, the detector 2, the insulator and the operational amplifier 4 are arranged inside the main cavity 3 and are electrically connected to the circuit board 1, and two detectors 2 and two operational amplifiers 4 are arranged respectively;

[0041] Two radio frequency insulators 5 are provided, and the two radio frequency insulators 5 are connected to two ends of the main cavity 3 through connecting screws, and the two radio frequency insulators 5 are electrically connected to the circuit board 1;

[0042] The insulators are provided with three components: a power supply insulator 31 for supplying power to the C-band dual-channel adjustable detector, and two output insulators 32 for outputting signals;

[0043] The operational amplifier 4 includes an output adjustment resistor 7 capable of adjusting the voltage value of the output signal.

[0044] Through the implementation of the above technical solution, two sets of parallel detection and amplification circuits are built in the main cavity 3 of the C-band dual-channel adjustable detector. Each detection and amplification circuit includes a radio frequency insulator 5, a detector 2, an operational amplifier 3 and an output insulator 32, wherein the radio frequency insulator 5 inputs a signal, the input signal is processed by the detector 2 to obtain a target signal, the target signal is input to the operational amplifier 3, and the output insulator 32 outputs a voltage after being amplified by the operational amplifier 3.

[0045] The output adjustment resistor 7 controls the gain of the operational amplifier, so the C-band dual-channel adjustable detector can output a suitable voltage value for the use environment by selecting a suitable output adjustment resistor 7.

[0046] The power insulator 31 can provide power for the C-band dual-channel adjustable detector.

[0047] In this embodiment, preferably, the two output regulating resistors 7 are arranged directly below the cavity cover 6 .

[0048] The cavity cover 6 is configured to be detachably connected to the main cavity 3 by means of bolts, and the cavity cover 6 of the C-band dual-channel adjustable detector can be opened by removing the bolts.

[0049] After the cavity cover 6 is opened, the operator can easily replace the output regulating resistor 7 located directly below the cavity cover 6. The two output regulating resistors 7 are located in the middle of the main cavity 3, which can provide the operator with a sufficiently large operating space to operate the output regulating resistors 7. The two output regulating resistors 7 respectively control the amplification factors of the two operational amplifiers 3. The two output regulating resistors 7 can be replaced at the same time, or only one of the output regulating resistors 7 can be replaced as needed.

[0050] After opening the cavity cover 6 of the C-band dual-channel adjustable detector, the two output adjustment resistors 7 can be replaced. The output adjustment resistors 7 are 0603 packaged resistors with a good size, which makes it easy to make the C-band dual-channel adjustable detector into a portable detector with a smaller size. Moreover, this 0603 packaged resistor can also be easily disassembled and assembled. When replacement is needed, a soldering iron and solder wire can be used to remove the original output adjustment resistor, and then a new output adjustment resistor can be soldered on.

[0051] The output voltage value can be adjusted by replacing the output adjustment resistor 7.

[0052] In this embodiment, preferably, three through holes are provided on the main cavity 3 , and the three through holes correspond to three insulators one by one, and the insulators extend to the outside of the main cavity 3 through the corresponding through holes.

[0053] The insulator is sintered to the main cavity 3 and is well sealed with the outside world through the main cavity 3, which can achieve the purpose of good waterproofing and dustproofing. Moreover, the insulator and the main cavity 3 can form a sealed metal cavity, and the interior of the sealed metal cavity can resist electromagnetic interference, so that the C-band dual-channel adjustable detector has better anti-interference performance.

[0054] A method for manufacturing a C-band dual-channel adjustable detector, comprising:

[0055] Step 1: Use 217°C solder to sinter the circuit board 1 to the main cavity 3;

[0056] Step 2: Use 217°C solder to sinter the insulator to the main cavity 3;

[0057] Step 3: Solder the operational amplifier 4 and the detector 2 to the circuit board 1 using 183°C solder;

[0058] Step 4: Connect the RF insulator 5 to the main cavity 3 and weld the RF insulator 5 to the circuit board 1;

[0059] Step 5: Use a gas phase cleaning machine to clean the C-band dual-channel adjustable detector;

[0060] Step 6: Perform a microscopic inspection on the cleaned C-band dual-channel adjustable detector, and fix the cavity cover 6 to the top of the main cavity 3.

[0061] First, the circuit board 1 is sintered to the main cavity 3 using solder with a high melting point of 217° C., so as to avoid failure of the connection between the circuit board 1 and the main cavity 3 caused by excessively high soldering temperature in the subsequent manufacturing process.

[0062] In this embodiment, preferably, the sintering method in step one includes: first placing the main cavity 3 on a welding workbench, then placing the circuit board 1 in the main cavity 3 and placing a sufficient amount of 217°C solder between the circuit board 1 and the bottom of the main cavity 3, and finally heating the welding workbench to 230° and maintaining it for 3 minutes.

[0063] By using a sufficient amount of 217°C solder to be placed between the circuit board 1 and the main cavity 3, and placing the pressing block tool on the circuit board 1, so that the pressing block tool can always apply downward pressure to the circuit board 1 during the welding process, when the temperature of the welding workbench exceeds 217°, the 217°C solder begins to melt into a liquid state, and the circuit board 1 will push the liquid 217°C solder to flow in all directions along the bottom surface of the main cavity 3 under the action of the above pressure, so as to achieve the purpose of uniform distribution of solder in all directions between the circuit board 1 and the bottom of the main cavity 3, so that the circuit board 1 can obtain a better grounding effect.

[0064] In this embodiment, preferably, a plurality of vias for discharging air between the circuit board 1 and the bottom of the main cavity 3 are provided on the circuit board 1 .

[0065] During the sintering process of step one, the air between the circuit board 1 and the bottom of the main cavity 3 can be discharged through these vias, avoiding the presence of pores or bubbles in the welding between the circuit board 1 and the bottom of the main cavity 3, which affects the stability of the grounding of the circuit board 1.

[0066] In this embodiment, preferably, a detector welding position, an operational amplifier welding position, an insulator welding position and a radio frequency insulator welding position are provided on the circuit board 1.

[0067] In step 2, the insulator is welded to the insulator welding position;

[0068] In step three, the detector 2 is welded to the detector welding position; the operational amplifier 4 is welded to the operational amplifier welding position.

[0069] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, a variety of simple modifications can be made to the technical solution of the present invention, and these simple modifications all belong to the protection scope of the present invention.

[0070] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0071] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A C-band dual-channel adjustable detector, characterized in that: The C-band dual-channel adjustable detector comprises a circuit board (1), a detector (2), a main cavity (3), an insulator, an operational amplifier (4), a radio frequency insulator (5) and a cavity cover (6), wherein: The cavity cover (6) is a detachable cover arranged on the top of the main cavity (3); the circuit board (1) is sintered to the bottom of the main cavity (3); the detector (2), the insulator and the operational amplifier (4) are arranged inside the main cavity (3) and are electrically connected to the circuit board (1); two detectors (2) and two operational amplifiers (4) are arranged respectively; Two radio frequency insulators (5) are provided, and the two radio frequency insulators (5) are connected to two ends of the main cavity (3) via connecting screws, and the two radio frequency insulators (5) are electrically connected to the circuit board (1); The insulators are provided with three components: a power supply insulator (31) for supplying power to the C-band dual-channel adjustable detector, and two output insulators (32) for outputting signals; The operational amplifier (4) includes an output adjustment resistor (7) capable of adjusting the voltage value of the output signal; The two output regulating resistors (7) are arranged directly below the cavity cover (6).

2. The C-band dual-channel adjustable detector according to claim 1, characterized in that: The main cavity (3) is provided with three through holes, the three through holes corresponding to the three insulators one by one, and the insulators extend to the outside of the main cavity (3) through the corresponding through holes.

3. A method for manufacturing the C-band dual-channel adjustable detector according to any one of claims 1-2, characterized in that: The method comprises: Step 1: Sintering the circuit board (1) to the main cavity (3) using 217° C. solder; Step 2: Sinter the insulator to the main cavity (3) using 217°C solder; Step 3: soldering the operational amplifier (4) and the detector (2) to the circuit board (1) using 183° C. solder; Step 4: Connect the radio frequency insulator (5) to the main cavity (3) using screws, and weld the radio frequency insulator (5) to the circuit board (1); Step 5: Clean the C-band dual-channel adjustable detector using a gas phase cleaning machine; Step 6: Perform a microscopic inspection on the C-band dual-channel adjustable detector after cleaning, and fix the cavity cover (6) to the top of the main cavity (3).

4. The method according to claim 3, characterized in that The sintering method in step 1 comprises: firstly placing the main cavity (3) on a welding workbench, then placing the circuit board (1) in the main cavity (3) and placing a sufficient amount of 217° C. solder between the circuit board (1) and the bottom of the main cavity (3), and finally heating the welding workbench to 230° and maintaining the temperature for 3 minutes.

5. The method according to claim 4, characterized in that The circuit board (1) is provided with a plurality of through holes for discharging air between the circuit board (1) and the bottom of the main cavity (3).

6. The method according to claim 3, characterized in that: The circuit board (1) is provided with a detector welding position, an operational amplifier welding position, an insulator welding position and a radio frequency insulator welding position. In step 2, the insulator is welded to the insulator welding position; In step three, the detector (2) is welded to the detector welding position; and the operational amplifier (4) is welded to the operational amplifier welding position.

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