CN218450097U - K-waveband low-group delay variation receiving module - Google Patents
K-waveband low-group delay variation receiving module Download PDFInfo
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- CN218450097U CN218450097U CN202222525247.8U CN202222525247U CN218450097U CN 218450097 U CN218450097 U CN 218450097U CN 202222525247 U CN202222525247 U CN 202222525247U CN 218450097 U CN218450097 U CN 218450097U
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Abstract
The utility model discloses a receiving module with K wave band low group delay variation, relating to the technical field of space radar measurement and control and space communication; the input end of the radio frequency amplification unit is connected with an externally input received radio frequency signal, the output end of the radio frequency amplification unit is connected with the input end 1 of a first frequency mixing unit, the input end 2 of the first frequency mixing unit is connected with an externally input local oscillator, the output end of the first frequency mixing unit is connected with the input end of an intermediate frequency amplification unit, the output end of the intermediate frequency amplification unit is connected with the input end 1 of a second frequency mixing unit, the input end 2 of the second frequency mixing unit is connected with an externally input two local oscillators, the output end of the second frequency mixing unit is connected with the input end of an intermediate frequency amplification output unit, and the output of the intermediate frequency amplification output unit receives an intermediate frequency output signal; the excellent group delay fluctuation performance of the receiving module is realized.
Description
Technical Field
The utility model relates to a space radar observes and controls and space flight communication technical field especially relates to a K wave band low group delay variation's receiving module.
Background
In a broadband wireless transmission system for space radar measurement and control and space communication, in addition to the influence of multipath and noise of a channel on transmission performance, the group delay fluctuation of the channel can further deteriorate the bit error rate of communication, and the higher the transmission rate and the wider the transmission bandwidth, the greater the influence of the group delay fluctuation of the channel is, so that a receiving system not only needs to have high receiving sensitivity, but also needs to have high group delay fluctuation indexes on a receiving link, so that the phase error during signal transmission can be reduced, and the receiving performance is improved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a receiving module that K wave band low group delay changes is provided, and it has realized the good group delay fluctuation performance of receiving module through radio frequency amplification unit, first mixing unit, an intermediate frequency amplification unit, second mixing unit and intermediate frequency amplification output unit etc..
In order to solve the technical problem, the utility model discloses the technical scheme who takes is:
the utility model provides a K wave band low group delay variation's receiving module, includes radio frequency amplification unit, first mixing unit, an intermediate frequency amplification unit, second mixing unit and intermediate frequency amplification output unit, the input of radio frequency amplification unit is connected with the receipt radio frequency signal of external input, the output of radio frequency amplification unit is connected with the input 1 of first mixing unit, the input 2 and the local oscillator of external input of first mixing unit are connected, the output of first mixing unit is connected with the input of an intermediate frequency amplification unit, the output of an intermediate frequency amplification unit is connected with the input 1 of second mixing unit, the input 2 and the two local oscillators of external input of second mixing unit are connected, the output of second mixing unit is connected with the input of intermediate frequency amplification output unit, the output of intermediate frequency amplification output unit receives intermediate frequency output signal promptly.
The further technical scheme is as follows: the radio frequency amplification unit comprises a first isolator, a first numerical control attenuator, a first amplifier, a first band-pass filter and a second isolator; the input end of the first isolator is connected with an externally input radio frequency signal, the output end of the first isolator is connected with the input end of the first amplifier after passing through the first numerical control attenuator, the output end of the first amplifier is connected with the input end of the first band-pass filter, the output end of the first band-pass filter is connected with the input end of the second isolator, and the output end of the second isolator is connected with the input end 1 of the first mixing unit.
The further technical scheme is as follows: the first frequency mixing unit comprises a third isolator, a second amplifier, a fourth isolator and a first frequency mixer; the input of third isolator is connected with a local oscillator signal of external input, the output of third isolator is connected with the input of second amplifier, the output of second amplifier is connected with the input of fourth isolator, the output of fourth isolator is connected with the local oscillator input of first mixer, the radio frequency input of first mixer is connected with the output of radio frequency amplification unit, the intermediate frequency output of first mixer is connected with the input of an intermediate frequency amplification unit.
The further technical scheme is as follows: the intermediate frequency amplifying unit comprises a second band-pass filter, a third amplifier, a second numerical control attenuator and a fourth amplifier; the input end of the second band-pass filter is connected with the output end of the first frequency mixing unit, the output end of the second band-pass filter is connected with the input end of a third amplifier, and the output end of the third amplifier is connected with the input end of a second digital control attenuator; the output end of the second digital controlled attenuator is connected with the input end of a fourth amplifier, and the output end of the fourth amplifier is connected with the input end 1 of the second frequency mixing unit.
The further technical scheme is as follows: the second frequency mixing unit comprises a first high-pass filter, a second high-pass filter, a fifth amplifier and a second frequency mixer; the input end of the first high-pass filter is connected with two local oscillation signals input from the outside, the output end of the first high-pass filter is connected with the input end of the second band-pass filter, the output end of the second high-pass filter is connected with the input end of the fifth amplifier, the output end of the fifth amplifier is connected with the local oscillation input end of the second frequency mixer, the radio frequency input end of the second frequency mixer is connected with the output end of an intermediate frequency amplification unit, and the intermediate frequency output end of the second frequency mixer is connected with the input end of the intermediate frequency amplification output unit.
The further technical scheme is as follows: the intermediate frequency amplification output unit comprises a first low-pass filter, a third band-pass filter, a sixth amplifier, a seventh amplifier and a second low-pass filter; the input end of the first low-pass filter is connected with the output end of the second frequency mixing unit, the output end of the first low-pass filter is connected with the input end of the third band-pass filter, the output end of the third band-pass filter is connected with the input end of the sixth amplifier, the output end of the sixth amplifier is connected with the input end of the seventh amplifier, the output end of the seventh amplifier is connected with the input end of the second low-pass filter, and the output end of the second low-pass filter receives intermediate frequency output.
The further technical scheme is as follows: the input end of the radio frequency amplification unit is connected with the external 18.2-21.2 GHz receiving radio frequency input; the input end of the first frequency mixing unit is connected with an external local oscillator input of 12.9-15.8 GHz; the input end of the second frequency mixing unit is connected with an external 3.05-3.15 GHz second local oscillator input; and the output end of the intermediate frequency amplification output unit outputs an S-band 2.2-2.3 GHz intermediate frequency signal.
The further technical scheme is as follows: the first bandpass filter used was the MEMS filter SiMS20R4/5R2-8D1.
The further technical scheme is as follows: the third band-pass filter is a YMB2250-100-5M12 filter.
Adopt the produced beneficial effect of above-mentioned technical scheme to lie in:
a K wave band low group delay variable receiving module comprises a radio frequency amplification unit, a first frequency mixing unit, an intermediate frequency amplification unit, a second frequency mixing unit and an intermediate frequency amplification output unit; the input end of the radio frequency amplification unit is connected with an externally input received radio frequency signal, the output end of the radio frequency amplification unit is connected with the input end of a first frequency mixing unit, the input end of the first frequency mixing unit is connected with an externally input local oscillator, the output end of the first frequency mixing unit is connected with the input end of an intermediate frequency amplification unit, the output end of the intermediate frequency amplification unit is connected with the input end of a second frequency mixing unit, the input end of the second frequency mixing unit is connected with an externally input second local oscillator, the output end of the second frequency mixing unit is connected with the input end of an intermediate frequency amplification output unit, and the output of the intermediate frequency amplification output unit receives an intermediate frequency output signal; the receiving module achieves excellent group delay fluctuation performance through the radio frequency amplifying unit, the first frequency mixing unit, the intermediate frequency amplifying unit, the second frequency mixing unit, the intermediate frequency amplifying output unit and the like.
See detailed description of the preferred embodiments.
Drawings
FIG. 1 is a schematic block diagram of the present invention;
fig. 2 is a schematic block diagram of the rf amplifying unit of the present invention;
fig. 3 is a schematic block diagram of a first mixing unit according to the present invention;
FIG. 4 is a schematic block diagram of an intermediate frequency amplification unit according to the present invention;
fig. 5 is a schematic block diagram of a second mixer unit according to the present invention;
fig. 6 is a schematic block diagram of the middle-intermediate frequency amplification output unit of the present invention;
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the application, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application, but the present application may be practiced in other ways than those described herein, and it will be apparent to those of ordinary skill in the art that the present application is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to fig. 6, the utility model discloses a receiving module with low group delay variation in K-band, which comprises a radio frequency amplifying unit, a first frequency mixing unit, an intermediate frequency amplifying unit, a second frequency mixing unit and an intermediate frequency amplifying output unit; the input of radio frequency amplification unit is connected with the receipt radio frequency signal of external input, the output of radio frequency amplification unit is connected with the input of first mixing unit, the input of first mixing unit is connected with an external input's local oscillator, the output of first mixing unit is connected with an intermediate frequency amplification unit's input, an intermediate frequency amplification unit's output is connected with second mixing unit's input, second mixing unit's input is connected with external input's two local oscillators, second mixing unit's output is connected with intermediate frequency amplification output unit's input, intermediate frequency amplification output unit's output is received intermediate frequency output signal promptly.
The radio frequency amplification unit comprises a first isolator, a first numerical control attenuator, a first amplifier, a first band-pass filter and a second isolator; the input end of the first isolator is connected with an externally input received radio frequency signal, the output end of the first isolator is connected with the input end of the first amplifier after passing through the first numerical control attenuator, the output end of the first amplifier is connected with the input end of the first band-pass filter, the output end of the first band-pass filter is connected with the input end of the second isolator, and the output end of the second isolator is connected with the input end of the first frequency mixing unit.
The first frequency mixing unit comprises a third isolator, a second amplifier, a fourth isolator and a first frequency mixer; the input of third isolator is connected with an external input local oscillator signal, the output of third isolator is connected with the input of second amplifier, the output of second amplifier is connected with the input of fourth isolator, the output of fourth isolator is connected with the local oscillator input of first mixer, the radio frequency input of first mixer is connected with the output of radio frequency amplification unit, the intermediate frequency output of first mixer is connected with the input of an intermediate frequency amplification unit.
The intermediate frequency amplification unit comprises a second band-pass filter, a third amplifier, a second digital controlled attenuator and a fourth amplifier; the input end of the second band-pass filter is connected with the output end of the first frequency mixing unit, the output end of the second band-pass filter is connected with the input end of a third amplifier, and the output end of the third amplifier is connected with the input end of a second digital controlled attenuator; the output end of the second digital controlled attenuator is connected with the input end of a fourth amplifier, and the output end of the fourth amplifier is connected with the input end of the second frequency mixing unit.
The second frequency mixing unit comprises a first high-pass filter, a second high-pass filter, a fifth amplifier and a second frequency mixer; the input end of the first high-pass filter is connected with two local oscillation signals input from the outside, the output end of the first high-pass filter is connected with the input end of the second band-pass filter, the output end of the second high-pass filter is connected with the input end of the fifth amplifier, the output end of the fifth amplifier is connected with the local oscillation input end of the second frequency mixer, the radio frequency input end of the second frequency mixer is connected with the output end of an intermediate frequency amplification unit, and the intermediate frequency output end of the second frequency mixer is connected with the input end of the intermediate frequency amplification output unit.
The intermediate frequency amplification output unit comprises a first low-pass filter, a third band-pass filter, a sixth amplifier, a seventh amplifier and a second low-pass filter; the input end of the first low-pass filter is connected with the output end of the second frequency mixing unit, the output end of the first low-pass filter is connected with the input end of the third band-pass filter, the output end of the third band-pass filter is connected with the input end of the sixth amplifier, the output end of the sixth amplifier is connected with the input end of the seventh amplifier, the output end of the seventh amplifier is connected with the input end of the second low-pass filter, and the output end of the second low-pass filter receives intermediate frequency output.
Description of the drawings:
as shown in fig. 1, a K-band low group delay variation receiving module includes a radio frequency amplifying unit, a first mixing unit, an intermediate frequency amplifying unit, a second mixing unit, and an intermediate frequency amplifying and outputting unit; the input end of the radio frequency amplification unit is connected with the external 18.2-21.2 GHz receiving radio frequency input, the output end of the radio frequency amplification unit is connected with the input end of the first frequency mixing unit, the input end 2 of the first frequency mixing unit is connected with the external 12.9-15.8 GHz local oscillator input, the output end of the first frequency mixing unit is connected with the input end of the intermediate frequency amplification unit, the output end of the intermediate frequency amplification unit is connected with the input end of the second frequency mixing unit, the input end 2 of the second frequency mixing unit is connected with the external 3.05-3.15 GHz local oscillator input, the output end of the second frequency mixing unit is connected with the input end of the intermediate frequency amplification output unit, and the output end of the intermediate frequency amplification output unit outputs S-waveband 2.2-2.3 GHz intermediate frequency signals.
As shown in fig. 2, the radio frequency amplifying unit includes a first isolator, a first digitally controlled attenuator, a first amplifier, a first band-pass filter, and a second isolator; an externally input 18.2-21.2 GHz received radio frequency signal is sent into a first numerical control attenuator after passing through a first isolator, and the first isolator is used for improving radio frequency input standing waves; the radio frequency signal is sent to a first amplifier after passing through a first numerical control attenuator, and the first numerical control attenuator is used for adjusting the gain of a receiving link according to the input radio frequency signal; the first amplifier performs low-noise amplification on the radio-frequency signal and then sends the radio-frequency signal to the first band-pass filter; the first band-pass filter effectively inhibits the radio frequency signal out-of-band spurious and then sends the radio frequency signal into the second isolator; the radio frequency signal is sent to the input end of the first frequency mixing unit after passing through a second isolator, and the second isolator is used for improving the standing wave at the input end of the first frequency mixing unit.
As shown in fig. 3, the first frequency mixing unit includes a third isolator, a second amplifier, a fourth isolator, and a first mixer; an externally input 12.9-15.8 GHz local oscillation signal is sent to a second amplifier after passing through a third isolator, and the third isolator is used for improving a local oscillation input standing wave; the second amplifier amplifies a local oscillation signal to enough power and then sends the amplified local oscillation signal to a fourth isolator; a local oscillation signal is sent to a local oscillation input end of the first frequency mixer after passing through a fourth isolator, and the fourth isolator is used for improving the standing wave of the local oscillation input end of the first frequency mixer; the 18.2-21.2 GHz radio-frequency signals sent by the radio-frequency amplification unit are connected with the radio-frequency input end of the first mixer; the first frequency mixer mixes the radio frequency signal with a local oscillator signal and outputs a 5.3-5.4 GHz signal to an intermediate frequency amplification unit.
As shown in fig. 4, the intermediate frequency amplifying unit includes a second band pass filter, a third amplifier, a second digital controlled attenuator and a fourth amplifier; 5.3-5.4 GHz signals sent by the first frequency mixing unit are sent to a third amplifier after stray generated by frequency mixing is effectively inhibited by a second band-pass filter; the third amplifier amplifies the signal and sends the amplified signal to the second digital controlled attenuator; the 5.3-5.4 GHz signal is sent to a fourth amplifier after passing through a second digital controlled attenuator, and the second digital controlled attenuator is used for adjusting the gain of a receiving link; the fourth amplifier amplifies the signal and sends the amplified signal to the second frequency mixing unit.
As shown in fig. 5, the second mixing unit includes a first high pass filter, a second high pass filter, a fifth amplifier, and a second mixer; the method comprises the following steps that an externally input 3.05-3.15 GHz second local oscillator signal passes through a first high-pass filter and a second high-pass filter and then is sent to a fifth amplifier, and the first high-pass filter and the second high-pass filter are used for effectively inhibiting 2200-2300 MHz signals in the second local oscillator; the fifth amplifier amplifies the second local oscillation signal to a sufficient power and then sends the amplified signal to a local oscillation input end of the second frequency mixer; the second frequency mixer mixes the 5.3-5.4 GHz signals with the two local oscillator signals and outputs 2.2-2.3 GHz signals to the intermediate frequency amplification output unit.
As shown in fig. 6, the intermediate frequency amplification output unit includes a first low pass filter, a third band pass filter, a sixth amplifier, a seventh amplifier, and a second low pass filter; the 2.2-2.3 GHz signal sent by the second mixing unit is sent to a third band-pass filter after the high-frequency stray after mixing is effectively inhibited by the first low-pass filter; the signal is effectively inhibited by a third band-pass filter from out-of-band spurious and then is sent to a sixth amplifier; the 2.2-2.3 GHz signals are amplified by a sixth amplifier and a seventh amplifier and then sent to a second low-pass filter; the signal is subjected to effective suppression on high-frequency stray and harmonic components through a second low-pass filter, and then an intermediate-frequency signal is finally output.
In the embodiment, the first band-pass filter adopts an MEMS filter SiMS20R4/5R2-8D1 of a medium-voltage capacitor 13, the third band-pass filter adopts a YMB2250-100-5M12 filter of Mitsubishi, which has good group delay fluctuation performance in a working band, and ensures that the group delay change of the whole receiving module is less than or equal to 1ns (within +/-10 MHz).
After the application runs for a period of time in a confidential mode, the beneficial effects fed back by the technical staff are as follows:
the radio frequency input frequency and the intermediate frequency output frequency can be expanded to other frequency bands by selecting devices such as a band-pass filter, a mixer, a numerical control attenuator, an isolator, an amplifier and the like; and adjusting the frequency of the local oscillation signal, the frequency step and the channel gain as required. Can be applied to wider fields and meet more requirements.
Claims (9)
1. A K wave band low group delay variable receiving module is characterized in that: the radio frequency amplification device comprises a radio frequency amplification unit, a first frequency mixing unit, an intermediate frequency amplification unit, a second frequency mixing unit and an intermediate frequency amplification output unit; the input of radio frequency amplification unit is connected with the receipt radio frequency signal of external input, the output of radio frequency amplification unit is connected with the input 1 of first mixing unit, the input 2 and the local oscillator of external input of first mixing unit are connected, the output of first mixing unit is connected with the input of an intermediate frequency amplification unit, the output of an intermediate frequency amplification unit is connected with the input 1 of second mixing unit, the input 2 and the two local oscillators of external input of second mixing unit are connected, the output of second mixing unit is connected with the input of intermediate frequency amplification output unit, the output of intermediate frequency amplification output unit receives intermediate frequency output signal promptly.
2. The K-band low group delay variation receiving module of claim 1, wherein: the radio frequency amplification unit comprises a first isolator, a first numerical control attenuator, a first amplifier, a first band-pass filter and a second isolator; the input end of the first isolator is connected with an externally input radio frequency signal, the output end of the first isolator is connected with the input end of the first amplifier after passing through the first numerical control attenuator, the output end of the first amplifier is connected with the input end of the first band-pass filter, the output end of the first band-pass filter is connected with the input end of the second isolator, and the output end of the second isolator is connected with the input end 1 of the first mixing unit.
3. The K-band low group delay variation receive module of claim 1, wherein: the first frequency mixing unit comprises a third isolator, a second amplifier, a fourth isolator and a first frequency mixer; the input of third isolator is connected with an external input local oscillator signal, the output of third isolator is connected with the input of second amplifier, the output of second amplifier is connected with the input of fourth isolator, the output of fourth isolator is connected with the local oscillator input of first mixer, the radio frequency input of first mixer is connected with the output of radio frequency amplification unit, the intermediate frequency output of first mixer is connected with the input of an intermediate frequency amplification unit.
4. The K-band low group delay variation receive module of claim 1, wherein: the intermediate frequency amplifying unit comprises a second band-pass filter, a third amplifier, a second numerical control attenuator and a fourth amplifier; the input end of the second band-pass filter is connected with the output end of the first frequency mixing unit, the output end of the second band-pass filter is connected with the input end of a third amplifier, and the output end of the third amplifier is connected with the input end of a second digital controlled attenuator; the output end of the second digital controlled attenuator is connected with the input end of a fourth amplifier, and the output end of the fourth amplifier is connected with the input end 1 of the second frequency mixing unit.
5. The K-band low group delay variation receiving module of claim 1, wherein: the second frequency mixing unit comprises a first high-pass filter, a second high-pass filter, a fifth amplifier and a second frequency mixer; the input end of the first high-pass filter is connected with two local oscillation signals input from the outside, the output end of the first high-pass filter is connected with the input end of the second band-pass filter, the output end of the second high-pass filter is connected with the input end of the fifth amplifier, the output end of the fifth amplifier is connected with the local oscillation input end of the second frequency mixer, the radio frequency input end of the second frequency mixer is connected with the output end of an intermediate frequency amplification unit, and the intermediate frequency output end of the second frequency mixer is connected with the input end of the intermediate frequency amplification output unit.
6. The K-band low group delay variation receiving module of claim 1, wherein: the intermediate frequency amplification output unit comprises a first low-pass filter, a third band-pass filter, a sixth amplifier, a seventh amplifier and a second low-pass filter; the input end of the first low-pass filter is connected with the output end of the second frequency mixing unit, the output end of the first low-pass filter is connected with the input end of the third band-pass filter, the output end of the third band-pass filter is connected with the input end of the sixth amplifier, the output end of the sixth amplifier is connected with the input end of the seventh amplifier, the output end of the seventh amplifier is connected with the input end of the second low-pass filter, and the output end of the second low-pass filter receives intermediate frequency output.
7. The K-band low group delay variation receiving module of claim 1, wherein: the input end of the radio frequency amplification unit is connected with the external 18.2-21.2 GHz receiving radio frequency input; the input end of the first frequency mixing unit is connected with an external local oscillator input of 12.9-15.8 GHz; the input end of the second frequency mixing unit is connected with an external 3.05-3.15 GHz second local oscillator input; and the output end of the intermediate frequency amplification output unit outputs an S-band 2.2-2.3 GHz intermediate frequency signal.
8. The K-band low group delay variation receiving module of claim 2, wherein: the first bandpass filter used was the MEMS filter SiMS20R4/5R2-8D1.
9. The K-band low group delay variation receive module of claim 6, wherein: the third band-pass filter is a YMB2250-100-5M12 filter.
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| CN202222525247.8U CN218450097U (en) | 2022-09-23 | 2022-09-23 | K-waveband low-group delay variation receiving module |
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| CN202222525247.8U CN218450097U (en) | 2022-09-23 | 2022-09-23 | K-waveband low-group delay variation receiving module |
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