CN221428896U - Signal source assembly and signal source device comprising same - Google Patents
Signal source assembly and signal source device comprising same Download PDFInfo
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- CN221428896U CN221428896U CN202323244243.3U CN202323244243U CN221428896U CN 221428896 U CN221428896 U CN 221428896U CN 202323244243 U CN202323244243 U CN 202323244243U CN 221428896 U CN221428896 U CN 221428896U
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Abstract
The utility model discloses a signal source assembly and a signal source device comprising the same. The signal source component integrates the frequency synthesis circuit, the power amplification circuit and the singlechip control circuit on the same circuit board, the frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area on the circuit board, and the singlechip control circuit is arranged in a second circuit area on the circuit board; the signal source device comprises a shell, wherein the shell is internally provided with only two circuit boards of a power supply module and a signal source assembly, the power supply module is close to a first circuit area, and isolation plates are arranged around the first circuit area so as to block the influence caused by power supply ripple waves and high-speed signals of the single chip microcomputer, and meanwhile, the single chip microcomputer digital circuit and the power supply analog circuit are separated, so that the mutual influence among different signals in the circuit can be reduced to a great extent. The device has simple structure, low cost, easy installation and debugging, and improves the control precision and stability of the system through ingenious structural arrangement and circuit design.
Description
Technical Field
The present disclosure relates to electronic circuits, and particularly to a signal source assembly and a signal source device including the same.
Background
The signal source device is widely applied to the technical fields of aerospace, electronic countermeasure, radar systems, wireless communication and the like, is an important component of a modern electronic system, and the quality of the signal source directly influences the performance of the whole electronic system.
The core technology of the signal source device is a frequency synthesis technology, the phase-locked loop frequency synthesis technology is a frequency synthesis technology which is widely applied at present, the required frequency is generated according to an automatic control theory, and the phase-locked loop frequency synthesis technology has the advantages of high working frequency, wide frequency band, low phase noise, good spurious performance, small volume and the like.
The prior signal source device based on the phase-locked loop frequency synthesis technology mainly comprises a power supply circuit, a phase-locked loop frequency synthesis circuit, a power amplification circuit and a singlechip control circuit, wherein the power supply circuit is an independent circuit board, the phase-locked loop frequency synthesis circuit and the power amplification circuit share one circuit board, and the singlechip control circuit is an independent circuit board.
On the frequency synthesis and power amplification circuit board, frequency synthesis is carried out through a phase-locked loop frequency synthesis circuit, and then power amplification is carried out through a power amplifier and output; the power supply circuit is responsible for supplying power to the phase-locked loop frequency synthesis circuit, the power amplification circuit and the singlechip control circuit, and the singlechip control circuit is responsible for coordination control and data transmission of the phase-locked loop frequency synthesis circuit and the power amplification circuit and is also responsible for communication with external equipment.
In the process of realizing the technical scheme in the embodiment of the application, the inventor discovers that the above technology at least has the following technical problems:
The existing signal source device has complex structural design, and a power circuit, a frequency synthesis and power amplification circuit and a singlechip control circuit are respectively arranged on different circuit boards, so that the cost is increased, the installation is inconvenient, and the later debugging and maintenance work of the product is not facilitated.
Disclosure of utility model
The signal source component and the signal source device comprising the same solve the technical problems that in the prior art, the signal source device is complex in structural design, the frequency synthesis and power amplification circuit and the singlechip control circuit are respectively arranged on different circuit boards, the cost is high, and the installation, the debugging and the maintenance are inconvenient.
In a first aspect, an embodiment of the present application provides a signal source assembly, including:
a frequency synthesizing circuit for generating a signal of a set frequency;
The power amplifying circuit is used for amplifying the power of the signal generated by the frequency synthesizing circuit and outputting the signal;
The singlechip control circuit is connected with the frequency synthesis circuit and the power amplification circuit and is used for coordinately controlling the work of the frequency synthesis circuit and the power amplification circuit;
The frequency synthesis circuit, the power amplification circuit and the singlechip control circuit are integrated on the same circuit board, the frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area on the circuit board, and the singlechip control circuit is arranged in a second circuit area on the circuit board;
The isolation board installation positions are arranged on the periphery of the first circuit area so as to facilitate the installation of the isolation board, and further isolate the mutual influence between signals in different areas on the circuit board.
Preferably, the first circuit area and the second circuit area are respectively located on two sides of the circuit board.
Preferably, the frequency synthesizing circuit includes:
A crystal oscillator for generating a stable frequency signal;
The phase-locked loop frequency synthesizer is connected with the crystal oscillator and the singlechip control circuit and is used for synthesizing a first frequency signal according to the phase-locked loop principle under the control of the singlechip control circuit by taking a frequency signal generated by the crystal oscillator as a reference;
the frequency multiplier is connected with the phase-locked loop frequency synthesizer and is used for carrying out integral multiplication on the first frequency signal to form a second frequency signal;
The low-pass filter is connected with the frequency multiplier and is used for screening signals lower than an upper limit threshold frequency in the second frequency signals to pass through so as to form third frequency signals;
And the high-pass filter is connected with the low-pass filter and is used for screening the signals higher than the lower threshold frequency in the third frequency signals to pass through so as to form the signals with the set frequency.
Further, the power amplifying circuit includes:
The digital signal control attenuator is connected with the high-pass filter and is used for carrying out power attenuation on the signal output by the high-pass filter to form a fifth frequency signal;
The radio frequency amplifier is connected with the digital signal control attenuator and is used for carrying out fixed power gain on the fifth frequency signal to form a sixth frequency signal;
The voltage-controlled attenuator is connected with the radio frequency amplifier and the singlechip control circuit and is used for carrying out attenuation control on the sixth frequency signal by using the analog control of the singlechip control circuit to form a seventh frequency signal;
The power amplifier is connected with the voltage-controlled attenuator and is used for carrying out gain amplification on the seventh frequency signal and outputting the seventh frequency signal;
And the operational amplifier is connected with the power amplifier and is used for providing bias voltage for the power amplifier and ensuring the normal operation of the power amplifier.
Still further, the singlechip control circuit includes:
The singlechip is connected with the phase-locked loop frequency synthesizer and the voltage-controlled attenuator and is used for controlling the frequency synthesis and output of the phase-locked loop frequency synthesizer and the signal attenuation and output of the voltage-controlled attenuator;
And the inverter is connected with the singlechip and the digital signal control attenuator and is used for logically controlling the signal of the singlechip and then transmitting the signal to the digital signal control attenuator to realize the attenuation control of the digital signal control attenuator.
In a second aspect, an embodiment of the present application provides a signal source device, including:
the shell is internally provided with a first installation area and a second installation area;
the signal source assembly is arranged in the first installation area; and the first circuit area of the signal source assembly is positioned at one side close to the second mounting area;
The power module is arranged in the second installation area, connected with the signal source assembly and used for supplying power to the signal source assembly;
And the isolation plate is arranged around the first circuit area on the signal source assembly so as to isolate the mutual influence among signals of the power supply module, the first circuit area and the second circuit area.
Preferably, the first and second mounting areas are located on opposite sides of the housing interior.
Preferably, an inner cover plate is arranged at the upper part of the isolation plate.
Further, the isolating plate and/or the inner cover plate is/are made of at least one of an aluminum plate, an engineering plastic plate, a copper alloy plate, an aluminum nickel-plated plate and a copper-plated plate.
Preferably, the power module is connected to an active device on the signal source assembly by a flying lead.
One or more technical solutions provided in the embodiments of the present application at least have the following technical effects or advantages:
1. The novel signal source component is designed, the frequency synthesis circuit, the power amplification circuit and the singlechip control circuit are integrated on the same circuit board, the cost is reduced, and the subsequent installation and debugging work is facilitated.
2. The frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area on the circuit board, the singlechip control circuit is arranged in a second circuit area on the circuit board, and isolation board mounting positions are arranged around the first circuit area so as to mount the isolation boards, further isolate and block the mutual influence between signals in different areas on the circuit board, and ensure the stability of the system.
3. The circuit has ingenious and compact structural design, and the frequency synthesis circuit is isolated from the later-stage circuit through the attenuator, so that the traction effect of the later-stage circuit signal and the frequency synthesis circuit is prevented; high-power output is realized through a two-stage amplifier; and a voltage-controlled attenuator is arranged between the two stages of amplifiers, and is accurately regulated by a singlechip to reduce final errors and obtain accurate and stable frequency output.
4. The novel signal source device is designed, only two circuit boards of the power supply module and the signal source assembly are adopted, and the novel signal source device is simple in structure, low in cost and easy to install and debug.
5. The singlechip control circuit and the power supply module are respectively positioned at two sides of the frequency synthesis and power amplification circuit part through the specially designed shell; the frequency synthesis and power amplification circuit part is provided with the isolation plates at the periphery, and the isolation plates are isolated from the power supply module and the singlechip control circuit part so as to block the influence caused by power supply ripple and high-speed signals of the singlechip, and meanwhile, the singlechip digital circuit and the power supply analog circuit are also separated, so that the mutual influence among different signals in the circuit can be reduced to a great extent, and the stability of the system is improved.
6. Inside the shell, the division board designs has solitary inner cover board, has further strengthened the isolation effect, has promoted the stability of system.
Drawings
Fig. 1 is a schematic structural diagram of a signal source assembly according to a first embodiment of the present application;
FIG. 2 is a schematic circuit diagram of a signal source assembly according to a first embodiment of the present application;
fig. 3 is a schematic structural diagram of a signal source device according to a second embodiment of the present application;
fig. 4 is a schematic circuit diagram of a signal source device according to a second embodiment of the present application;
fig. 5 is a schematic side view of a signal source device according to a second embodiment of the present application.
Detailed Description
The signal source component and the signal source device comprising the same solve the technical problems that in the prior art, the signal source device is complex in structural design, a phase-locked loop, a power amplifying circuit and a singlechip control circuit are arranged on different circuit boards respectively, the cost is high, and the installation, the debugging and the maintenance are inconvenient.
The technical scheme in the embodiment of the application aims to solve the technical problems, and the overall thought is as follows:
A new signal source component is designed, a frequency synthesis and power amplification circuit and a single chip microcomputer control circuit are synthesized on the same circuit board, the frequency synthesis and power amplification circuit is arranged on one side of the circuit board, and the single chip microcomputer control circuit is arranged on the other side of the circuit board. Meanwhile, the isolation board mounting positions are arranged around the frequency synthesis and power amplification circuit so as to facilitate the mounting of the isolation board, further isolate and block the mutual influence between different signals on two sides of the circuit board, reduce the cost while maintaining the stability of the system, and facilitate the subsequent mounting and debugging work.
On the basis, a signal source device containing the signal source component is designed, the signal source device comprises a shell, a power circuit board and the signal source component are arranged in the shell, a frequency synthesis and power amplification circuit part is arranged in the middle of the shell, and a singlechip control circuit part and the power circuit board are respectively arranged on two sides of the frequency synthesis and power amplification circuit part; the periphery of the frequency synthesis and power amplification circuit part is provided with a separation plate, and an independent inner cover plate is designed; after debugging, an inner cover plate is added to isolate the single chip microcomputer control circuit from the power circuit board so as to block the influence caused by power supply ripple and high-speed signals of the single chip microcomputer, and meanwhile, a single chip microcomputer digital circuit and a power supply analog circuit are also isolated, so that the mutual influence among different signals in the circuit can be reduced to a great extent, and the stability of the system is improved.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Example 1
Fig. 1 and fig. 2 are a schematic structural diagram and a schematic circuit diagram of a signal source assembly according to the present embodiment, where the signal source assembly includes:
a frequency synthesizing circuit for generating a signal of a set frequency;
The power amplifying circuit is used for amplifying the power of the signal generated by the frequency synthesizing circuit and outputting the signal;
The singlechip control circuit is connected with the frequency synthesis circuit and the power amplification circuit and is used for coordinately controlling the work of the frequency synthesis circuit and the power amplification circuit;
The frequency synthesis circuit, the power amplification circuit and the single chip microcomputer control circuit are integrated on the same circuit board, the frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area 1 on the circuit board, and the single chip microcomputer control circuit is arranged in a second circuit area 2 on the circuit board. The isolation board installation positions 3 are arranged on the periphery of the first circuit area 1 so as to facilitate the installation of the isolation board, and further isolate and block the mutual influence between signals in different areas on the circuit board.
In a preferred embodiment, the first circuit area 1 and the second circuit area 2 are located on both sides of the circuit board.
Referring to fig. 2, the frequency synthesizing circuit includes:
A crystal oscillator for generating a stable frequency signal;
The phase-locked loop frequency synthesizer is connected with the crystal oscillator and the singlechip control circuit and is used for synthesizing a first frequency signal according to the phase-locked loop principle under the control of the singlechip control circuit by taking a frequency signal generated by the crystal oscillator as a reference;
the frequency multiplier is connected with the phase-locked loop frequency synthesizer and is used for carrying out integral multiplication on the first frequency signal to form a second frequency signal;
The low-pass filter is connected with the frequency multiplier and is used for screening signals lower than an upper limit threshold frequency in the second frequency signals to pass through so as to form third frequency signals;
The high-pass filter is connected with the low-pass filter and is used for screening signals higher than a lower limit threshold frequency in the third frequency signals to pass through so as to form signals with set frequencies;
The crystal oscillator, the phase-locked loop frequency synthesizer, the frequency multiplier, the low-pass filter and the high-pass filter are sequentially connected.
In a preferred embodiment, the crystal oscillator is an active crystal oscillator, which produces a stable 100MHz frequency.
In a preferred embodiment, the phase-locked loop frequency synthesizer is provided with a voltage-controlled oscillator VCO and a frequency divider, and generates a signal with a frequency of 100MHz to 6.4GHz according to the phase-locked loop principle by using a frequency signal generated by a crystal oscillator as a frequency reference. The singlechip modulates the synthesis frequency of the phase-locked loop frequency synthesizer in the process, and can obtain the stepping frequency of 1KHz in the range.
The frequency multiplier changes a signal with the frequency of 100MHz to 6.4GHz generated by the phase-locked loop frequency synthesizer into a signal with the frequency of 200MHz to 12.8GHz, and meanwhile, the power of the signal has a certain gain.
In a preferred embodiment, the low pass filter screens signals below 12GHz and the high pass filter screens signals above 10GHz, and the final frequency synthesis circuit obtains signals with output frequencies of 10GHz-12GHz and frequency steps of 1 kHz. That is, the frequency-multiplied signal is filtered by the low-pass filter to remove frequencies above 12GHz, and the filtered frequencies are filtered by the next-stage high-pass filter to remove frequencies below 10GHz, so as to obtain signals with frequencies of 10GHZ-12 GHZ.
The power amplification circuit includes:
The digital signal control attenuator is connected with the high-pass filter and the singlechip control circuit and is used for carrying out power attenuation on the signal output by the high-pass filter under the control of the singlechip control circuit to form a fifth frequency signal;
The radio frequency amplifier is connected with the digital signal control attenuator and is used for carrying out fixed power gain on the fifth frequency signal to form a sixth frequency signal;
The voltage-controlled attenuator is connected with the radio frequency amplifier and the singlechip control circuit and is used for carrying out attenuation control on the sixth frequency signal by using the analog control of the singlechip control circuit to form a seventh frequency signal;
The power amplifier is connected with the voltage-controlled attenuator and is used for carrying out gain amplification on the seventh frequency signal and outputting the seventh frequency signal;
And the operational amplifier is connected with the power amplifier and is used for providing bias voltage for the power amplifier and ensuring the normal operation of the power amplifier.
In a preferred embodiment, the digital signal control attenuator can realize power attenuation of 0.5dBm, 1dBm, 2dBm, 5dBm, 8dBm, 16dBm and 31.5dBm under the control of high and low levels of the singlechip.
After the signal passes through the pre-stage frequency multiplier, the signal has a certain power gain, at this time, after the signal passes through the digital signal control attenuator, the power and noise can be reduced, and then the power is amplified by the lower-stage amplifier, so that the amplified power with low phase noise can be obtained.
In a preferred embodiment, the voltage controlled attenuator has excellent attenuation linearity, and the temperature, frequency and attenuation value have good linear relation in the frequency range of-40 ℃ to +85 ℃ and 10GHz to 12 GHz. In the later temperature calibration, a curve of power with respect to temperature and frequency is obtained by adopting a temperature calibration method, and compensation calibration is performed, so that an accurate output power value can be obtained.
The voltage-controlled attenuator utilizes the analog control of the singlechip to carry out attenuation control, ensures the accuracy of final power output, and can finally obtain the attenuation control of the output power in a range of 26 dBm-20 dB and in a step of 0.5dB by utilizing the control of the singlechip.
The signal gain flatness of the power amplifier in the frequency range of 10GHZ to 12GHZ is approximate to a straight line at the temperature of-40 ℃ to +80 ℃, and the power amplifier is beneficial to control of the output power of a circuit.
The singlechip control circuit comprises:
The singlechip MCU is connected with the phase-locked loop frequency synthesizer and used for controlling the frequency synthesis and output of the phase-locked loop frequency synthesizer; the voltage-controlled attenuator is connected with the voltage-controlled attenuator and used for controlling the signal attenuation and output of the voltage-controlled attenuator;
The inverter is connected with the singlechip and the digital signal control attenuator and is used for carrying out logic control on signals of the singlechip and sending the signals to the digital signal control attenuator so as to realize attenuation control of the digital signal control attenuator;
In addition, the singlechip is also responsible for communication with external devices, including but not limited to: and receiving a control signal of the external equipment, and sending the working state and the execution result of the signal source assembly to the external equipment and the like.
The signal source component provided in this embodiment performs smart structural design on the circuit, and the design logic of the whole circuit is: the attenuator behind the frequency synthesis circuit is used for isolating the frequency synthesis circuit from the later-stage circuit and preventing the later-stage circuit signal from generating traction effect with the frequency synthesis circuit; the signal is then amplified initially by the rf amplifier, and since the required power is 26dBm greater, a power amplifier is required to be provided, and the signal is amplified by a two-stage amplifier. Meanwhile, a voltage-controlled attenuator is arranged between the two stages of amplifiers, and the voltage-controlled attenuator is accurately regulated through a singlechip to reduce final errors and obtain accurate and stable frequency output.
The technical scheme provided by the embodiment of the application at least has the following technical effects or advantages:
1. The frequency synthesis circuit, the power amplification circuit and the singlechip control circuit are integrated on the same circuit board, so that the cost is reduced, and the subsequent installation and debugging work is facilitated.
2. The frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area on the circuit board, the singlechip control circuit is arranged in a second circuit area on the circuit board, and isolation board mounting positions are arranged around the first circuit area so as to mount the isolation boards, further isolate and block the mutual influence between signals in different areas on the circuit board, and ensure the stability of the system.
3. The circuit has ingenious and compact structural design, and the frequency synthesis circuit is isolated from the later-stage circuit through the attenuator, so that the traction effect of the later-stage circuit signal and the frequency synthesis circuit is prevented; high-power output is realized through a two-stage amplifier; and a voltage-controlled attenuator is arranged between the two stages of amplifiers, and is accurately regulated by a singlechip to reduce final errors and obtain accurate and stable frequency output.
Example two
Fig. 3 and fig. 4 are a schematic structural diagram and a schematic circuit diagram of a signal source device according to the present embodiment, where the signal source device includes:
A housing 100, a first mounting area 101 and a second mounting area 102 being provided in the housing 100;
The signal source assembly of the first embodiment is disposed in the first mounting area 101; and the first circuit region 1 of the signal source assembly is located on a side close to the second mounting region 102;
The power module is arranged in the second installation area 102, is connected with the signal source assembly and supplies power for the signal source assembly;
the isolating plate 200 is arranged around the first circuit area 1 on the signal source assembly to isolate the mutual influence among the signals of the power supply module, the first circuit area 1 and the second circuit area 2.
In a preferred embodiment, the first mounting area 101 and the second mounting area 102 are located on two sides of the interior of the housing 100, respectively. After the completion, the power supply module, the first circuit area 1 (frequency synthesis circuit and power amplification circuit) of the signal source assembly and the second circuit area 2 (single chip microcomputer control circuit) of the signal source assembly are sequentially arranged.
In a preferred embodiment, the upper portion of the isolation board 200 is further provided with an inner cover board, after the debugging is completed, the isolation board is covered with the inner cover board, the first circuit area 1 on the signal source component is isolated from the power module and the first circuit area 2, so that the influence caused by the power ripple and the high-speed signal of the singlechip is blocked, and meanwhile, the singlechip digital circuit and the power analog circuit are also isolated, so that the mutual influence among different signals in the circuits can be reduced to a great extent, and the stability of the system is improved.
In a preferred embodiment, the isolation plate and the inner cover plate are all aluminum plates, the signal isolation function of the aluminum shell is strong, about 90% of signals can be reflected, and meanwhile, the aluminum plates have the advantages of low density, high hardness and low price.
In other alternative embodiments, the isolation board 200 may be an engineering plastic board, a copper alloy board, an aluminum nickel-plated board, a copper-plated board, or the like, as long as it has a signal isolation function.
In a preferred embodiment, the spacer 200 is fixed to the signal source assembly circuit board by screws, and the spacer 200 is closely attached to the signal source assembly circuit board.
In a preferred embodiment, a notch 201 is disposed on a side of the isolation board 200 near the second circuit area 2 on the signal source assembly at intervals, and a circuit board corresponding to the notch 201 is a portion of the signal source assembly where the first circuit area 1 is in signal communication with the second circuit area 2.
In a certain preferred embodiment, the power module comprises a voltage stabilizing chip and a voltage conversion module which are sequentially connected, the voltage stabilizing chip is externally connected with a 12V power supply, the voltage is converted into stable +5V, -5V and 3.3V voltages through the voltage stabilizing chip and the voltage conversion module, and then active devices on the signal source assembly are powered through flying leads.
Referring to fig. 5, in a preferred embodiment, the housing 100 is provided with a connector 300, such as a J30J rectangular connector, the connector 300 is provided with a power supply interface and a communication interface, the power supply interface is connected with a voltage stabilizing chip of the power supply module, the communication interface is connected with a single chip microcomputer, and the power supply and communication are realized by connecting the connector 300 with external equipment.
In a preferred embodiment, an LED indicator 400 is disposed on the housing 100, and the LED indicator 400 is connected to a power module for determining whether the power supply is normal. When the device is powered on, the LED indicator 400 lights up.
In a preferred embodiment, the housing 100 is provided with a signal output interface 500, and the signal output interface 500 is connected to a power amplifier of the power amplifying circuit to output signals of the device.
In a preferred embodiment, the housing 100 includes an outer cover that is closed after all assembly is complete.
The technical solution in the above embodiment of the present application has at least the following technical effects or advantages in addition to the effects described in the first embodiment:
1. Only two circuit boards of the power module and the signal source assembly are adopted, the structure is simple, the cost is low, and the installation and the debugging are easy.
2. The singlechip control circuit and the power supply module are respectively positioned at two sides of the frequency synthesis and power amplification circuit part through the specially designed shell; the frequency synthesis and power amplification circuit part is provided with the isolation plates at the periphery, and the isolation plates are isolated from the power supply module and the singlechip control circuit part so as to block the influence caused by power supply ripple and high-speed signals of the singlechip, and meanwhile, the singlechip digital circuit and the power supply analog circuit are also separated, so that the mutual influence among different signals in the circuit can be reduced to a great extent, and the stability of the system is improved.
3. Inside the shell, the division board designs has solitary inner cover board, has further strengthened the isolation effect, has promoted the stability of system.
It will be understood that, although the terms "first," "second," etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments.
Terms of orientation such as up, down, left, right, front, rear, front, back, top, bottom, etc. mentioned or possible to be mentioned in the present specification are defined with respect to the configurations shown in the drawings, which are relative concepts, and thus may be changed according to different positions and different use states thereof. These and other directional terms should not be construed as limiting terms.
While the application has been described with respect to preferred embodiments thereof, it will be understood by those skilled in the art that various modifications and additions may be made without departing from the scope of the application. Equivalent embodiments of the present application will be apparent to those skilled in the art having the benefit of the teachings disclosed herein, when considered in the light of the foregoing disclosure, and without departing from the spirit and scope of the application; meanwhile, any equivalent changes, modifications and evolution of the above embodiments according to the essential technology of the present application still fall within the scope of the technical solution of the present application.
Claims (10)
1. A signal source assembly, comprising:
a frequency synthesizing circuit for generating a signal of a set frequency;
The power amplifying circuit is used for amplifying the power of the signal generated by the frequency synthesizing circuit and outputting the signal;
The singlechip control circuit is connected with the frequency synthesis circuit and the power amplification circuit and is used for coordinately controlling the work of the frequency synthesis circuit and the power amplification circuit;
The frequency synthesis circuit, the power amplification circuit and the singlechip control circuit are integrated on the same circuit board, the frequency synthesis circuit and the power amplification circuit are arranged in a first circuit area on the circuit board, and the singlechip control circuit is arranged in a second circuit area on the circuit board;
The isolation board installation positions are arranged on the periphery of the first circuit area so as to facilitate the installation of the isolation board, and further isolate the mutual influence between signals in different areas on the circuit board.
2. The signal source assembly of claim 1 wherein the first circuit region and the second circuit region are on opposite sides of a circuit board.
3. The signal source assembly of claim 1, wherein the frequency synthesizing circuit comprises:
A crystal oscillator for generating a stable frequency signal;
The phase-locked loop frequency synthesizer is connected with the crystal oscillator and the singlechip control circuit and is used for synthesizing a first frequency signal according to the phase-locked loop principle under the control of the singlechip control circuit by taking a frequency signal generated by the crystal oscillator as a reference;
the frequency multiplier is connected with the phase-locked loop frequency synthesizer and is used for carrying out integral multiplication on the first frequency signal to form a second frequency signal;
The low-pass filter is connected with the frequency multiplier and is used for screening signals lower than an upper limit threshold frequency in the second frequency signals to pass through so as to form third frequency signals;
And the high-pass filter is connected with the low-pass filter and is used for screening the signals higher than the lower threshold frequency in the third frequency signals to pass through so as to form the signals with the set frequency.
4. The signal source assembly of claim 3 wherein the power amplification circuit comprises:
The digital signal control attenuator is connected with the high-pass filter and is used for carrying out power attenuation on the signal output by the high-pass filter to form a fifth frequency signal;
The radio frequency amplifier is connected with the digital signal control attenuator and is used for carrying out fixed power gain on the fifth frequency signal to form a sixth frequency signal;
The voltage-controlled attenuator is connected with the radio frequency amplifier and the singlechip control circuit and is used for carrying out attenuation control on the sixth frequency signal by using the analog control of the singlechip control circuit to form a seventh frequency signal;
The power amplifier is connected with the voltage-controlled attenuator and is used for carrying out gain amplification on the seventh frequency signal and outputting the seventh frequency signal;
And the operational amplifier is connected with the power amplifier and is used for providing bias voltage for the power amplifier and ensuring the normal operation of the power amplifier.
5. The signal source assembly of claim 4, wherein the single chip microcomputer control circuit comprises:
The singlechip is connected with the phase-locked loop frequency synthesizer and the voltage-controlled attenuator and is used for controlling the frequency synthesis and output of the phase-locked loop frequency synthesizer and the signal attenuation and output of the voltage-controlled attenuator;
And the inverter is connected with the singlechip and the digital signal control attenuator and is used for logically controlling the signal of the singlechip and then transmitting the signal to the digital signal control attenuator to realize the attenuation control of the digital signal control attenuator.
6. A signal source device, comprising:
the shell is internally provided with a first installation area and a second installation area;
A signal source assembly as claimed in any one of claims 1 to 5 disposed within said first mounting region; and the first circuit area of the signal source assembly is positioned at one side close to the second mounting area;
The power module is arranged in the second installation area, connected with the signal source assembly and used for supplying power to the signal source assembly;
And the isolation plate is arranged around the first circuit area on the signal source assembly so as to isolate the mutual influence among signals of the power supply module, the first circuit area and the second circuit area.
7. The signal source device of claim 6 wherein the first and second mounting areas are located on opposite sides of the housing interior.
8. The signal source device of claim 6 wherein the spacer plate has an upper portion provided with an inner cover plate.
9. The signal source device according to claim 8, wherein the spacer plate and/or the inner cover plate is made of any one of an aluminum plate, an engineering plastic plate, a copper alloy plate, an aluminum nickel plate, and a copper plate.
10. The signal source apparatus of claim 6 wherein the power module is connected to active devices on the signal source assembly by flying leads.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323244243.3U CN221428896U (en) | 2023-11-30 | 2023-11-30 | Signal source assembly and signal source device comprising same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323244243.3U CN221428896U (en) | 2023-11-30 | 2023-11-30 | Signal source assembly and signal source device comprising same |
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| Publication Number | Publication Date |
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| CN221428896U true CN221428896U (en) | 2024-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323244243.3U Active CN221428896U (en) | 2023-11-30 | 2023-11-30 | Signal source assembly and signal source device comprising same |
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| Country | Link |
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| CN (1) | CN221428896U (en) |
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