CN218124667U

CN218124667U - Up converter

Info

Publication number: CN218124667U
Application number: CN202222494554.4U
Authority: CN
Inventors: 罗志刚; 孙良; 宋旭
Original assignee: Chengdu Sheenst Technology Co ltd
Current assignee: Chengdu Sheenst Technology Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-23
Anticipated expiration: 2032-09-20

Abstract

The utility model relates to an up-converter technical field discloses an up-converter, include switch frequency-selecting circuit, switch module, frequency conversion module, first filter module, voltage-controlled attenuation module, numerical control attenuation module and the low pass filter module that sets gradually along the microwave transmission direction, the input of switch frequency-selecting circuit is used for receiving the L/S wave band source, still includes control module, control module is used for control switch frequency-selecting circuit, switch module and numerical control attenuation module. The utility model relates to an up-converter can adapt to the wave source of different input bands, and application scope is wider.

Description

Up converter

Technical Field

The utility model relates to an up-converter technical field, concretely relates to up-converter.

Background

The up-converter is used for frequency conversion and amplification of the intermediate frequency signal and outputting the frequency-converted radio frequency signal to a power amplifier, so that the up-converter is an important component of radio frequency channel equipment.

In different application environments, the intermediate frequency signal level of the input end of the up-converter is uncertain, and the radio frequency wave bands may be different, so that the up-converter which can adapt to different input bands is designed, and the application range of the up-converter is widened.

SUMMERY OF THE UTILITY MODEL

The utility model provides a power amplification synthesis device capable of selecting various output powers, which solves the problems.

The utility model discloses a following technical scheme realizes:

the utility model provides an up-converter, includes switch frequency-selecting circuit, switch module, frequency conversion module, first filter module, voltage-controlled attenuation module, numerical control attenuation module and the low pass filter module that sets gradually along the microwave transmission direction, the input of switch frequency-selecting circuit is used for receiving the signal of L/S wave band source, still includes control module, control module is used for controlling switch frequency-selecting circuit, switch module and numerical control attenuation module.

As an optimization, a first power division module is arranged between the switch frequency selection circuit and the switch module, an input end of the first power division module is connected with an output end of the switch frequency selection circuit, one output end of the first power division module is connected with the switch module, and the other output end of the first power division module is connected with the first detector.

As an optimization, the power divider further includes a second power divider, an output end of the low-pass filtering module is connected to an input end of the second power divider, one output end of the second power divider is connected to the second detector, and another output end of the second power divider is connected to the output channel.

As an optimization, the switch module includes a first switch and a second switch, the first power divider module includes a first power divider and a third power divider, an input end of the first power divider is connected to an output end of the switch frequency selection circuit, two output ends of the first power divider are respectively connected to the first switch and the third power divider, two output ends of the third power divider are respectively connected to the second switch and the first detector, output ends of the first switch and the second switch are both connected to the frequency conversion module, and the control module controls the first switch and the second switch respectively.

As optimization, the frequency conversion module includes a high-pass filter, a first low-pass filter, a first amplifier, a first attenuator, a phase-locked loop, a first band-pass filter, a second amplifier, a third amplifier and a frequency mixer, an input end of the high-pass filter is connected with the first switch, an output end of the high-pass filter is connected with one input end of the frequency mixer through the third amplifier, an input end of the first low-pass filter is connected with the second switch, an output end of the first low-pass filter sequentially passes through the first amplifier, the first attenuator, the phase-locked loop, the first band-pass filter and the second amplifier and is connected with the other input end of the frequency mixer, and the control module is connected with a control end of the phase-locked loop.

As an optimization, the first filtering module includes a second band-pass filter and a fourth amplifier, an input end of the second band-pass filter is connected to an output end of the mixer, and an output end of the second band-pass filter is connected to an input end of the fourth amplifier.

As optimization, the voltage-controlled attenuation module includes a voltage-controlled attenuator and a fifth amplifier, an input end of the voltage-controlled attenuator is connected with an output end of the fourth amplifier, and an output end of the voltage-controlled attenuator is connected with an input end of the fifth amplifier.

As optimization, the numerical control attenuation module comprises a numerical control attenuator and a sixth amplifier, the input end of the numerical control attenuator is connected with the output end of the fifth amplifier, the output end of the numerical control attenuator is connected with the input end of the sixth amplifier, and the control module is connected with the control end of the numerical control attenuator.

And optimally, the control module is a singlechip.

As optimization, the type of the single chip microcomputer is STM32F103C8T6.

Compared with the prior art, the utility model, following advantage and beneficial effect have:

1. the utility model relates to an up converter which can adapt to wave sources with different input wave bands and has wider application range;

2. the utility model discloses a set up the wave detector at output and input, can monitor input/output signal better.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

fig. 1 is a schematic diagram of a general structure of an up-converter according to the present invention;

fig. 2 is a detailed structural diagram of fig. 1.

Reference numbers and corresponding part names in the drawings:

the system comprises a 1-L/S band source, a 2-switch frequency selection circuit, a 3-first power division module, a 3 a-first power divider, a 3 b-third power divider, a 4-switch module, a 4 a-first switch, a 4 b-second switch, a 5-frequency conversion module, a 5 a-high pass filter, a 5 b-third amplifier, a 5 c-mixer, a 5 d-first low pass filter, a 5 e-first amplifier, a 5 f-first attenuator, a 5 g-phase-locked loop, a 5 h-first band pass filter, a 5 i-second amplifier, a 6-first filtering module, a 6 a-second band pass filter, a 6 b-fourth amplifier, a 7-voltage-controlled attenuation module, a 7 a-voltage-controlled attenuator, a 7 b-fifth amplifier, an 8-numerical control attenuation module, an 8 a-numerical control attenuator, a 8 b-sixth amplifier, a 9-low pass filtering module, a 10-second power divider, a 11-first detector, a 12-second detector and a 13-control module.

Detailed Description

To make the objects, technical solutions and advantages of the present invention more clearly understood, the following description is given for further details of the present invention with reference to the accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention, and are not intended to limit the present invention.

Example 1

This embodiment 1 provides an up-converter, as shown in figures 1-2,

the microwave frequency-selecting switch comprises a switch frequency-selecting circuit 2, a switch module 4, a frequency conversion module 5, a first filtering module 6, a voltage-controlled attenuation module 7, a numerical control attenuation module 8 and a low-pass filtering module 9 which are sequentially arranged along a microwave transmission direction, wherein the input end of the switch frequency-selecting circuit 2 is used for receiving signals of an L/S wave band source 1, and the microwave frequency-selecting switch also comprises a control module 13, and the control module 13 is used for controlling the switch frequency-selecting circuit 2, the switch module 4 and the numerical control attenuation module 8. The control module 13 is a single chip microcomputer, and the model of the single chip microcomputer is STM32F103C8T6.

In the technical scheme, a switching control signal of a control electric module is used for switching frequency selection of an externally input radio frequency signal of an L/S waveband signal and then outputting the radio frequency signal to a switch module 4, an acquisition module can be additionally arranged for acquiring the state of each amplification module, when any one of overheating, overlarge reflection, input overdriving, overcurrent, overvoltage and the like of each amplification module in an up-converter occurs, the acquisition module transmits the signal to a control module 13, the control module 13 controls the switch module 4 to be disconnected so as to protect the up-converter, a frequency conversion module 5 is used for realizing a frequency conversion function so that an input intermediate frequency signal is changed into a high frequency signal, a voltage-controlled attenuation module 7 is used for adjusting the gain of a fifth amplifier 7b in a full-temperature range through a voltage-controlled attenuator 7a, the gain of the fifth amplifier 7b is kept constant in the full-temperature range, a numerical control attenuation module 8 is used for setting attenuation of the radio frequency signal, a first filter module 6 and a low-pass filter module 9 are used for controlling output harmonic waves below-40 c, the switch frequency selection circuit 2 can adopt a circuit in the prior art, and the circuit is not repeated description.

In this embodiment, a first power dividing module 3 is disposed between the switch frequency selecting circuit 2 and the switch module 4, an input end of the first power dividing module 3 is connected to an output end of the switch frequency selecting circuit 2, one output end of the first power dividing module 3 is connected to the switch module 4, and another output end of the first power dividing module 3 is connected to the first detector 11.

By arranging the first power dividing module 3, a part of signals can be output to the first detector 11, and the first detector 11 can monitor the input signals at any time so as to monitor the input signals.

In this embodiment, the present invention further includes a second power divider 10, an output end of the low-pass filtering module 9 is connected to an input end of the second power divider 10, one output end of the second power divider 10 is connected to a second detector 12, and another output end of the second power divider 10 is connected to an output channel.

By providing the second power divider 10, a part of the signal can be output to the second detector 12, and the output signal can be monitored at any time by the second detector 12, so as to monitor the output signal.

The first detector 11 and the second detector 12 may be of the type LTCS576.

In this embodiment, the switch module 4 includes a first switch 4a and a second switch 4b, the first power divider module 3 includes a first power divider 3a and a third power divider 3b, an input end of the first power divider 3a is connected to an output end of the switch frequency selecting circuit 2, two output ends of the first power divider 3a are respectively connected to the first switch 4a and the third power divider 3b, two output ends of the third power divider 3b are respectively connected to the second switch 4b and the first detector 11, output ends of the first switch 4a and the second switch 4b are both connected to the frequency conversion module 5, and the control module 13 controls the first switch 4a and the second switch 4b respectively.

Any switch capable of being controlled by the controller can be adopted as the first switch 4a and the second switch 4b, and details are not repeated here, when any one of the situations of overheating, overlarge reflection, input overdriving, overcurrent, overvoltage and the like occurs in each amplification module in the up-converter, the acquisition module transmits a signal to the control module 13, and the control module 13 controls the first switch 4a and the second switch 4b to be switched off, so that the whole up-converter is switched off by switching off, and the up-converter is protected.

In this embodiment, the frequency conversion module 5 includes a high-pass filter 5a, a first low-pass filter 5d, a first amplifier 5e, a first attenuator 5f, a phase-locked loop 5g, a first band-pass filter 5h, a second amplifier 5i, a third amplifier 5b, and a mixer 5c, an input end of the high-pass filter 5a is connected to the first switch 4a, an output end of the high-pass filter 5a is connected to one input end of the mixer 5c through the third amplifier 5b, an input end of the first low-pass filter 5d is connected to the second switch 4b, an output end of the first low-pass filter 5d is connected to another input end of the mixer 5c sequentially through the first amplifier 5e, the first attenuator 5f, the phase-locked loop 5g, the first band-pass filter 5h, and the second amplifier 5i, and the control module 13 is connected to a control end of the phase-locked loop 5 g.

The first path of signals is filtered through a high-pass filter 5a, amplified through a third amplifier 5b and enters a mixer 5c, the second path of signals is filtered through a first low-pass filter 5d, amplified through a first amplifier 5e, attenuated through a first attenuator 5f, processed through a phase-locked loop 5g, phase information of a certain clock is extracted from the signals, local oscillation synchronous signals are generated, and finally, the local oscillation synchronous signals enter the mixer 5c through a second amplifier 5i and are mixed with the first path of signals. The phase locked loop 5g may be of the type stuw81300.

In this embodiment, the first filtering module 6 includes a second band-pass filter 6a and a fourth amplifier 6b, an input end of the second band-pass filter 6a is connected to an output end of the mixer 5c, and an output end of the second band-pass filter 6a is connected to an input end of the fourth amplifier 6 b.

The signal output from the mixer 5c is filtered by the second band-pass filter 6a and amplified by the fourth amplifier 6 b. The operating frequency of the second band-pass filter 6a is: 11.9-13GHz, out-of-band consistent: > 40dBc @ DC-10.9GHz & > 30dBc @ > 14.6GHZ.

In this technical solution, the voltage-controlled attenuator module 7 includes a voltage-controlled attenuator 7a and a fifth amplifier 7b, an input end of the voltage-controlled attenuator 7a is connected to an output end of the fourth amplifier 6b, and an output end of the voltage-controlled attenuator 7a is connected to an input end of the fifth amplifier 7 b. The voltage-controlled attenuator 7a may be an RFSA2023 of RFMD, and the RFSA2023 of RFMD is a full-monolithic analog voltage-controlled attenuator 7a (VCA), which has excellent linearity typically compensating for a gain control range of 30dB by temperature, so that the gain of the fifth amplifier 7b can be adjusted in the full temperature range, and the gain of the fifth amplifier 7b can be kept constant in the full temperature range.

In this embodiment, the digitally controlled attenuator module 8 includes a digitally controlled attenuator 8a and a sixth amplifier 8b, an input end of the digitally controlled attenuator 8a is connected to an output end of the fifth amplifier 7b, an output end of the digitally controlled attenuator 8a is connected to an input end of the sixth amplifier 8b, and the control module 13 is connected to a control end of the digitally controlled attenuator 8 a. In this embodiment, the required attenuation value of the digitally controlled attenuation module 8 is 20dB, and the step is 1dB.

Finally the utility model discloses a main technical index of converter is as follows 1:

TABLE 1 Main technical index requirements

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. The utility model provides an up-converter, its characterized in that includes switch frequency-selecting circuit, switch module, frequency conversion module, first filter module, voltage-controlled attenuation module, numerical control attenuation module and the low-pass filter module that sets gradually along the microwave transmission direction, the input of switch frequency-selecting circuit is used for receiving the signal of L/S wave band source, still includes control module, control module is used for controlling switch frequency-selecting circuit, switch module and numerical control attenuation module.

2. The upconverter according to claim 1, wherein a first power division module is disposed between the switch frequency selection circuit and the switch module, an input end of the first power division module is connected to an output end of the switch frequency selection circuit, one output end of the first power division module is connected to the switch module, and another output end of the first power division module is connected to the first detector.

3. The upconverter according to claim 1 or 2, further comprising a second power divider, wherein an output end of the low-pass filtering module is connected to an input end of the second power divider, one output end of the second power divider is connected to the second detector, and another output end of the second power divider is connected to the output channel.

4. The upconverter according to claim 2, wherein the switch module includes a first switch and a second switch, the first power divider module includes a first power divider and a third power divider, an input end of the first power divider is connected to an output end of the switch frequency selection circuit, two output ends of the first power divider are respectively connected to the first switch and the third power divider, two output ends of the third power divider are respectively connected to the second switch and the first detector, output ends of the first switch and the second switch are both connected to the frequency conversion module, and the control module controls the first switch and the second switch respectively.

5. The up-converter according to claim 4, wherein the frequency conversion module comprises a high-pass filter, a first low-pass filter, a first amplifier, a first attenuator, a phase-locked loop, a first band-pass filter, a second amplifier, a third amplifier and a mixer, an input end of the high-pass filter is connected to the first switch, an output end of the high-pass filter is connected to one input end of the mixer through the third amplifier, an input end of the first low-pass filter is connected to the second switch, an output end of the first low-pass filter is connected to another input end of the mixer sequentially through the first amplifier, the first attenuator, the phase-locked loop, the first band-pass filter and the second amplifier, and the control module is connected to a control end of the phase-locked loop.

6. An upconverter according to claim 5, wherein the first filtering module comprises a second band-pass filter and a fourth amplifier, an input of the second band-pass filter being connected to the output of the mixer, and an output of the second band-pass filter being connected to an input of the fourth amplifier.

7. The up-converter according to claim 6, wherein the voltage-controlled attenuator module comprises a voltage-controlled attenuator and a fifth amplifier, an input terminal of the voltage-controlled attenuator is connected to an output terminal of the fourth amplifier, and an output terminal of the voltage-controlled attenuator is connected to an input terminal of the fifth amplifier.

8. The up-converter according to claim 7, wherein the digitally controlled attenuator module comprises a digitally controlled attenuator and a sixth amplifier, an input terminal of the digitally controlled attenuator is connected to an output terminal of the fifth amplifier, an output terminal of the digitally controlled attenuator is connected to an input terminal of the sixth amplifier, and the control module is connected to a control terminal of the digitally controlled attenuator.

9. The up-converter according to claim 1, wherein the control module is a single chip microcomputer.

10. The up-converter according to claim 9, wherein the type of the single chip microcomputer is STM32F103C8T6.