CN210745098U - Up-conversion module applied to millimeter wave signals - Google Patents
Up-conversion module applied to millimeter wave signals Download PDFInfo
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- CN210745098U CN210745098U CN201922277899.2U CN201922277899U CN210745098U CN 210745098 U CN210745098 U CN 210745098U CN 201922277899 U CN201922277899 U CN 201922277899U CN 210745098 U CN210745098 U CN 210745098U
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Abstract
The utility model discloses an up-conversion module applied to millimeter wave signals, which comprises a first filter, a power divider, a first amplifier, a first attenuator, a mixer, a second attenuator, a second filter, a second amplifier, a third attenuator, a third amplifier, a fourth attenuator, a fifth attenuator, a sixth attenuator, a seventh attenuator and a third filter which are connected in sequence; the input end of the first filter is the input end of the up-conversion module, and the output end of the third filter is the output end of the up-conversion module; the mixer also has an input for receiving a local oscillator signal; the up-conversion module further comprises a detection circuit, and the input end of the detection circuit is connected with the output end of the power divider; the up-conversion module has the advantages of large attenuation range, high attenuation control precision and high linearity.
Description
Technical Field
The utility model relates to a microwave communication technique, especially a be applied to up-conversion module of millimeter wave signal.
Background
In microwave communication, an up-conversion module is used as an important component in a signal transmitter, and almost determines the power and frequency of signal transmission. In practical application, there is higher requirement to in-band flatness, spurious suppression, gain control, attenuation control etc. usually, the utility model discloses mainly make further research to attenuation control and attenuation range scope to propose an attenuation range big, attenuation control accuracy height and have the up-conversion module of high linearity.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to overcome prior art's not enough, provide an up-conversion module for millimeter wave signal, have characteristics such as the decay range is big, decay control accuracy height.
The purpose of the utility model is realized through the following technical scheme:
an up-conversion module applied to millimeter wave signals comprises a first filter, a power divider, a first amplifier, a first attenuator, a mixer, a second attenuator, a second filter, a second amplifier, a third attenuator, a third amplifier, a fourth attenuator, a fifth attenuator, a sixth attenuator, a seventh attenuator and a third filter which are connected in sequence;
the input end of the first filter is the input end of the up-conversion module, and the output end of the third filter is the output end of the up-conversion module;
the mixer also has an input for receiving a local oscillator signal;
the up-conversion module further comprises a detection circuit, and the input end of the detection circuit is connected with the output end of the power divider.
Further, the detection circuit comprises a fourth amplifier and a detector which are connected in sequence, and the input end of the fourth amplifier is connected with the power divider through the input end of the detection circuit; the output end of the detector is the output end of the detection circuit.
Further, the detection circuit comprises an eighth attenuator and a detector which are connected in sequence, and the input end of the eighth attenuator is the input end of the detection circuit and is connected with the power divider; the output end of the detector is the output end of the detection circuit.
Further, the detector is a logarithmic detector.
Further, the first filter, the second filter and the third filter are all band-pass filters; the first attenuator and the second attenuator are both pi-type attenuators; and the third attenuator, the fourth attenuator, the fifth attenuator, the sixth attenuator and the seventh attenuator are all numerical control attenuators.
Further, the eighth attenuator is a pi-type attenuator.
Further, the up-conversion module further includes an amplitude equalizer, the amplitude equalizer is disposed between the first filter and the power divider, an output end of the first filter is connected to an input end of the amplitude equalizer, and an output end of the amplitude equalizer is connected to an input end of the power divider.
The utility model has the advantages of it is following:
1. the up-conversion module adopts a multi-stage attenuator to control output, so that the up-conversion circuit has large attenuation range, high attenuation control precision and high linearity;
2. the device has an automatic detection function, and can automatically complete detection work while transmitting radio frequency signals.
Drawings
Fig. 1 is a circuit diagram of an up-conversion module of the present invention;
fig. 2 is a circuit diagram of another detection circuit of the up-conversion module of the present invention;
fig. 3 is another circuit diagram of the up-conversion module of the present invention;
in the figure, 1-first filter, 2-power divider, 3-first amplifier, 4-first attenuator, 5-mixer, 6-second attenuator, 7-second filter, 8-second amplifier, 9-third attenuator, 10-third amplifier, 11-fourth attenuator, 12-fifth attenuator, 13-sixth attenuator, 14-seventh attenuator, 15-third filter, 16-fourth amplifier, 17-detector, 18-eighth attenuator, 19-amplitude equalizer.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the following description will clearly describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The embodiment of the utility model provides an up-conversion module for millimeter wave signal, as shown in fig. 1, including first wave filter 1, merit divider 2, first amplifier 3, first attenuator 4, mixer 5, second attenuator 6, second wave filter 7, second amplifier 8, third attenuator 9, third amplifier 10, fourth attenuator 11, fifth attenuator 12, sixth attenuator 13, seventh attenuator 14 and third wave filter 15 that connect gradually; the configuration of the multi-stage attenuator ensures that the attenuation range of the whole up-conversion module circuit is large enough and the attenuation control precision is high enough.
The first filter 1, the second filter 7 and the third filter 15 are all band-pass filters; the first attenuator 4 and the second attenuator 6 are both pi-type attenuators; the third attenuator 9, the fourth attenuator 11, the fifth attenuator 12, the sixth attenuator 13 and the seventh attenuator 14 are all numerical control attenuators; the attenuation range of the numerical control attenuator is 0-31.5 dB, and the total attenuation range of 5 numerical control attenuators is 0-157.5 dB; and the attenuation step of the numerical control attenuator is 0.5dB, so that the attenuation precision of the up-conversion module is within +/-1 dB.
The input end of the first filter 1 is the input end of the up-conversion module, and the output end of the third filter 15 is the output end of the up-conversion module.
The input end of the first filter 1 receives a carrier intermediate frequency signal of a signal transmitting system, the intermediate frequency signal is subjected to frequency mixing by an up-conversion module to obtain a carrier radio frequency signal, the carrier radio frequency signal is obtained by removing an upper sideband after the intermediate frequency signal and a local vibration source signal are subjected to frequency mixing, and the output frequency of the radio frequency signal is the sum of the frequencies of the intermediate frequency signal and the local vibration source signal; the rf signal is output from the up-conversion module via the output of the third filter 15.
The mixer 5 also has an input for receiving a local oscillator signal;
the up-conversion module further comprises a detection circuit, and the input end of the detection circuit is connected with the output end of the power divider 2; the dynamic range of the detector circuit is-65 dBm- +5dBm, and the output voltage of the detector circuit is about 1.0V.
The detector circuit comprises a fourth amplifier 16 and a detector 17 which are connected in sequence, and the input end of the fourth amplifier 16 is the input end of the detector circuit and is connected with the power divider 2; the output end of the detector 17 is the output end of the detection circuit.
Wherein the detector 17 is a logarithmic detector 17, and the dynamic range of the detector 17 is-65 dBm- +5 dBm.
As shown in fig. 2, the detector circuit may further include an eighth attenuator 18 and a detector 17 connected in sequence, where an input end of the eighth attenuator 18 is connected to the power divider 2 for an input end of the detector circuit; the output end of the detector 17 is the output end of the detection circuit.
Wherein, the detector 17 is a logarithmic detector 17, and the dynamic range of the detector 17 is-65 dBm- +5 dBm; the eighth attenuator 18 is a pi-type attenuator, and the pi-type attenuator can make the matching degree between the power divider 2 and the detector 17 better, so that the flatness in the detection circuit is increased, and the performance of the up-conversion module is improved.
In another embodiment of the present invention, as shown in fig. 3, an amplitude equalizer 19 is further included in the up-conversion module circuit, the amplitude equalizer 19 is disposed between the first filter 1 and the power divider 2, the output end of the first filter 1 is connected to the input end of the amplitude equalizer 19, and the output end of the amplitude equalizer 19 is connected to the input end of the power divider 2.
The amplitude equalizer 19 is arranged to increase the in-band flatness of the up-conversion, so that the matching degree between devices is better, and the performance of the up-conversion module is improved.
Claims (7)
1. An up-conversion module applied to millimeter wave signals is characterized by comprising a first filter, a power divider, a first amplifier, a first attenuator, a mixer, a second attenuator, a second filter, a second amplifier, a third attenuator, a third amplifier, a fourth attenuator, a fifth attenuator, a sixth attenuator, a seventh attenuator and a third filter which are connected in sequence;
the input end of the first filter is the input end of the up-conversion module, and the output end of the third filter is the output end of the up-conversion module;
the mixer also has an input for receiving a local oscillator signal;
the up-conversion module further comprises a detection circuit, and the input end of the detection circuit is connected with the output end of the power divider.
2. The up-conversion module of claim 1, wherein the detector circuit comprises a fourth amplifier and a detector connected in sequence, and an input end of the fourth amplifier is connected to the power divider for an input end of the detector circuit; the output end of the detector is the output end of the detection circuit.
3. The up-conversion module of claim 1, wherein the detector circuit comprises an eighth attenuator and a detector connected in sequence, and an input end of the eighth attenuator is connected to the power divider for an input end of the detector circuit; the output end of the detector is the output end of the detection circuit.
4. The upconversion module according to claim 2 or 3, wherein the detector is a logarithmic detector.
5. The upconversion module of claim 1, wherein the first filter, the second filter, and the third filter are all bandpass filters; the first attenuator and the second attenuator are both pi-type attenuators; and the third attenuator, the fourth attenuator, the fifth attenuator, the sixth attenuator and the seventh attenuator are all numerical control attenuators.
6. The upconversion module according to claim 3, characterized in that said eighth attenuator is a pi-type attenuator.
7. The upconversion module according to claim 1, further comprising an amplitude equalizer disposed between the first filter and the power divider, wherein an output of the first filter is connected to an input of the amplitude equalizer, and an output of the amplitude equalizer is connected to an input of the power divider.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277899.2U CN210745098U (en) | 2019-12-17 | 2019-12-17 | Up-conversion module applied to millimeter wave signals |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922277899.2U CN210745098U (en) | 2019-12-17 | 2019-12-17 | Up-conversion module applied to millimeter wave signals |
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| Publication Number | Publication Date |
|---|---|
| CN210745098U true CN210745098U (en) | 2020-06-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201922277899.2U Active CN210745098U (en) | 2019-12-17 | 2019-12-17 | Up-conversion module applied to millimeter wave signals |
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- 2019-12-17 CN CN201922277899.2U patent/CN210745098U/en active Active
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