CN213279992U - C-frequency-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure - Google Patents
C-frequency-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure Download PDFInfo
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- CN213279992U CN213279992U CN202022495842.2U CN202022495842U CN213279992U CN 213279992 U CN213279992 U CN 213279992U CN 202022495842 U CN202022495842 U CN 202022495842U CN 213279992 U CN213279992 U CN 213279992U
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Abstract
The utility model provides a cell-phone 5G basic station circuit structure is suppressed to single local oscillator double polarization dual output of C frequency channel, include: the optical fiber detection device comprises a first polarization probe, a second polarization probe, an oscillator, two first amplifiers, two second amplifiers, two third amplifiers, two fourth amplifiers, two first filters, two mixers, two second filters and a giant array circuit, wherein the output end of the first polarization probe is connected with the input end of the first amplifier, the output end of the first amplifier is connected with the input end of the second amplifier, the output end of the second amplifier is connected with the input end of the third amplifier, the output end of the third amplifier is connected with the input end of the first filter, the output end of the first filter is connected with the input end of the fourth amplifier, 5G network signals of 3.3-3.6GHZ are attenuated and filtered through the first filter, and then intermediate-frequency signals except 950-. Thus, a good network signal can be obtained.
Description
Technical Field
The utility model relates to a circuit structure field especially relates to a cell-phone 5G basic station circuit structure is restrained to single local oscillator double polarization dual output of C frequency channel.
Background
Lnb (low noise block down converter) is a low noise block down converter, which is composed of a mixer and a local oscillator. LNBs can be generally divided into C-band LNBs (3.4GHZ-4.2GHZ) and KU-band LNBs (10.7GHZ-12.75 GHZ). The LNB is required to amplify the signals because the satellite total signal is relatively weak before reaching the antenna and the signal loss increases with higher frequency coaxial cable transmissions, without degrading the signal-to-noise ratio too much. The working process of the LNB is to amplify the satellite high-frequency signal, then convert the high-frequency satellite signal to the intermediate frequency of 950MHZ-2150MHZ (the intermediate frequency range is determined according to the type of the LNB) by using the local oscillation circuit and amplify the satellite signal again, so as to be beneficial to the transmission of the coaxial cable and the demodulation and the work of the satellite receiver.
With the vigorous development of network technology, the requirement of data capacity for network transmission is getting larger, and the frequency band of network signals is developed from 2G, 3G or 4G, and 5G networks are already popularized in various countries around the world. Because the frequency band resource is limited, the frequency bands of 5G network signals divided by different countries are different, and now some countries divide the frequency band of the 5G network signals into satellite television bands with C wave short, because the wireless network signals are gradually popularized by 5G signals from 4G, the national Ministry of industry and communications specifies the initial intermediate frequency band of 5G: 3.3-3.6GHZ and 4.8-5GHZ, the frequency band of the satellite television of the C wave band is divided into 3.4-4.2GHZ, the frequency band of 3.3-3.6GHZ of the 5G signal is overlapped with the frequency band of the satellite television of the C wave band, and the high frequency head of the C wave band at the receiving end is interfered by the 5GHZ signal. Therefore, the receiving of satellite television will be interfered, so that the interference of 5G signal needs to be filtered out when the C-band high frequency is required, and a circuit structure is urgently needed to solve the problem.
SUMMERY OF THE UTILITY MODEL
In order to solve the above problem, the utility model adopts the following technical scheme: the utility model provides a cell-phone 5G basic station circuit structure is suppressed to single local oscillator double polarization dual output of C frequency channel, includes: the device comprises a first polarization probe, a second polarization probe, an oscillator, two first amplifiers, two second amplifiers, two third amplifiers, two fourth amplifiers, two first filters, two mixers, two second filters and a giant array circuit;
the output end of the first polarization probe is connected with the input end of a first amplifier, the output end of the first amplifier is connected with the input end of a second amplifier, the output end of the second amplifier is connected with the input end of a third amplifier, the output end of the third amplifier is connected with the input end of a first filter, the output end of the first filter is connected with the input end of a fourth amplifier, the output end of the fourth amplifier is connected with the input end of a second filter, and the output end of the second filter is connected with the input end of the macro-array circuit;
the output end of the second polarization probe is connected with the input end of another first amplifier, the output end of the first amplifier is connected with the input end of another second amplifier, the output end of the second amplifier is connected with the input end of another third amplifier, the output end of the third amplifier is connected with the input end of another first filter, the output end of the first filter is connected with the input end of another fourth amplifier, the output end of the fourth amplifier is connected with the input end of another second filter, and the output end of the second filter is connected with the other input end of the macro-array circuit;
and the output end of the oscillator is respectively connected with the input end of each mixer.
Further, the first polarized probe is a V-polarized probe.
Further, the second polarized probe is an H-polarized probe.
Further, the two first amplifiers are low noise amplifiers.
Further, two of the second amplifiers are low noise amplifiers.
Further, two of the third amplifiers are low noise amplifiers.
Further, two of the fourth amplifiers are low noise amplifiers.
Further, the two first filters are comb filters.
Further, two of the second filters are multilayer ceramic low-pass filters.
Furthermore, the macro circuit is a 2X2 macro integrated circuit, and the macro circuit has two output ports, each of which is connected to a receiver through a coaxial cable.
The utility model has the advantages that: by using the circuit structure, the 5G network signals of 3.3-3.6GHZ are attenuated and filtered by the first filter, and the intermediate frequency signals except 950-1450MHz are attenuated and filtered by the second filter, so that the interference signals are filtered. Thus, a good network signal can be obtained.
Drawings
The figures further illustrate the invention, but the embodiments in the figures do not constitute any limitation of the invention.
Fig. 1 is an overall structural schematic diagram of a circuit structure of a C-band single-local-oscillator dual-polarization dual-output suppression mobile phone 5G base station according to an embodiment;
fig. 2 is a circuit diagram of a circuit structure of a C-band single-local-oscillator dual-polarization dual-output suppression mobile phone 5G base station according to an embodiment;
wherein, HANterna is a second polarization probe, VAterna is a first polarization probe, LNA1 is a first amplifier, LNA2 is a second amplifier, LNA3 is a third amplifier, LNA4 is a fourth amplifier, Band pass filter is a first filter, Active Mixer is a Mixer, Low-Band pass filter is a second filter, and 2 × 2switch is a macro-array circuit.
Detailed Description
The following will combine the drawings of the embodiments of the present invention to further describe the technical solution of the present invention, and the present invention is not limited to the following specific embodiments. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
As shown in fig. 1 to fig. 2, a circuit structure of a C-band single-local-oscillator dual-polarization dual-output suppression mobile phone 5G base station includes: a first polarization probe, a second polarization probe, an oscillator 100, two first amplifiers 200, two second amplifiers 300, two third amplifiers 400, two fourth amplifiers 800, two first filters 500, two mixers 600, two second filters 700 and a macro-array circuit 900, wherein an output terminal of the first polarization probe is connected to an input terminal of one of the first amplifiers 200, an output terminal of the first amplifier 200 is connected to an input terminal of one of the second amplifiers 300, an output terminal of the second amplifier 300 is connected to an input terminal of one of the third amplifiers 400, an output terminal of the third amplifier 400 is connected to an input terminal of one of the first filters 500, an output terminal of the first filter 500 is connected to an input terminal of one of the fourth amplifiers 800, an output terminal of the fourth amplifier 800 is connected to an input terminal of one of the second filters 700, the output of the second filter 700 is connected to the input of the macro circuit 900, the output of said second polarization probe is connected to the input of another said first amplifier 200, the output of said first amplifier 200 is connected to the input of another said second amplifier 300, the output of said second amplifier 300 is connected to the input of another said third amplifier 400, the output of said third amplifier 400 is connected to the input of another said first filter 500, the output of said first filter 500 is connected to the input of another said fourth amplifier 800, the output of said fourth amplifier 800 is connected to the input of another said second filter 700, the output of the second filter 700 is connected to another input of the macro circuit 900, the output terminal of the oscillator 100 is connected to the input terminal of each of the mixers 600.
In particular, the first polarized probe is a V-polarized probe. The second polarized probe is an H polarized probe. Further, two of the first amplifiers 200 are low noise amplifiers, two of the second amplifiers 300 are low noise amplifiers, two of the third amplifiers 400 are low noise amplifiers, and two of the fourth amplifiers 800 are low noise amplifiers. Further, the two first filters 500 are comb filters, and the two second filters 700 are multilayer ceramic low pass filters. It should be noted that the macro circuit 900 is a 2X2 macro ic, and the macro circuit 900 has two output ports 910, and each of the output ports 910 is connected to a receiver through a coaxial cable. It should be noted that the oscillator 100 is a ceramic dielectric oscillator 100, and the low noise amplifier is also referred to as an LNA amplifier.
That is, the satellite television downlink signal is reflected to the resonance cavity of the C-band tuner through the feed forward antenna, the V and H polarization probe received signals are respectively transmitted to the first amplifier 200, then to the second amplifier 300 and then to the third amplifier 400, amplified in sequence by the first amplifier 200, the second amplifier 300 and the third amplifier 400, then the 3.7-4.2GHZ frequency band is screened by a comb filter and input into a mixer 600 of the mixing stage, at the same time, the signal is mixed with the local oscillator frequency of 5.15GHz output by the ceramic dielectric oscillator 100OSC, 950 + 1450MHz intermediate frequency signals are output to the fourth amplifier 800 for amplification, the 950 + 1450MZ frequency band is screened out by the multi-layer ceramic low-pass filter, and finally the intermediate frequency signals are respectively input to the 2X2 giant-array integrated circuit, and then the two output ports 910 of the giant-array integrated circuit are respectively connected to the receiver through coaxial cables. That is, the user controls the macro circuit 900 to output the V or H polarized intermediate frequency signal by setting the output voltage of the receiver to 13V or 18V.
Specifically, the comb filter is used for filtering the high-frequency signals, attenuating and filtering 5G network signals of 3.3-3.6GHZ, and enabling downlink signals of 3.7-4.2GHZ satellite televisions to pass through the filter. The multilayer ceramic low-pass filter is used for filtering the intermediate frequency signals, attenuating and filtering the intermediate frequency signals except for 950-.
By using the circuit structure, the 5G network signals of 3.3-3.6GHZ are attenuated and filtered by the first filter, and the intermediate frequency signals except 950-1450MHz are attenuated and filtered by the second filter, so that the interference signals are filtered. Thus, a good network signal can be obtained.
As described above, the above embodiments are not limiting embodiments of the present invention, and modifications or equivalent variations made by those skilled in the art based on the substance of the present invention are within the technical scope of the present invention.
Claims (10)
1. The utility model provides a single local oscillator double polarization dual output of C frequency channel restraines cell-phone 5G basic station circuit structure which characterized in that includes: the device comprises a first polarization probe, a second polarization probe, an oscillator, two first amplifiers, two second amplifiers, two third amplifiers, two fourth amplifiers, two first filters, two mixers, two second filters and a giant array circuit;
the output end of the first polarization probe is connected with the input end of a first amplifier, the output end of the first amplifier is connected with the input end of a second amplifier, the output end of the second amplifier is connected with the input end of a third amplifier, the output end of the third amplifier is connected with the input end of a first filter, the output end of the first filter is connected with the input end of a fourth amplifier, the output end of the fourth amplifier is connected with the input end of a second filter, and the output end of the second filter is connected with the input end of the macro-array circuit;
the output end of the second polarization probe is connected with the input end of another first amplifier, the output end of the first amplifier is connected with the input end of another second amplifier, the output end of the second amplifier is connected with the input end of another third amplifier, the output end of the third amplifier is connected with the input end of another first filter, the output end of the first filter is connected with the input end of another fourth amplifier, the output end of the fourth amplifier is connected with the input end of another second filter, and the output end of the second filter is connected with the other input end of the macro-array circuit;
and the output end of the oscillator is respectively connected with the input end of each mixer.
2. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: the first polarized probe is a V-polarized probe.
3. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: the second polarized probe is an H polarized probe.
4. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the first amplifiers are low noise amplifiers.
5. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the second amplifiers are low noise amplifiers.
6. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the third amplifiers are low noise amplifiers.
7. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the fourth amplifiers are low noise amplifiers.
8. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the first filters are comb filters.
9. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: two of the second filters are multilayer ceramic low pass filters.
10. The C-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure according to claim 1, characterized in that: the large array circuit is a 2X2 large array integrated circuit and is provided with two output ports, and each output port is connected with a receiver through a coaxial cable.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022495842.2U CN213279992U (en) | 2020-11-03 | 2020-11-03 | C-frequency-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure |
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| CN202022495842.2U CN213279992U (en) | 2020-11-03 | 2020-11-03 | C-frequency-band single-local-oscillator dual-polarization dual-output inhibition mobile phone 5G base station circuit structure |
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