CN110535487A - A kind of multiple signals sending and receiving methods and multichannel transceiver circuit - Google Patents
A kind of multiple signals sending and receiving methods and multichannel transceiver circuit Download PDFInfo
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- CN110535487A CN110535487A CN201910888751.4A CN201910888751A CN110535487A CN 110535487 A CN110535487 A CN 110535487A CN 201910888751 A CN201910888751 A CN 201910888751A CN 110535487 A CN110535487 A CN 110535487A
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- circuit
- frequency changer
- frequency
- link circuit
- signal
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
- H04B1/0007—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain wherein the AD/DA conversion occurs at radiofrequency or intermediate frequency stage
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
Abstract
The invention discloses a kind of multiple signals sending and receiving methods and multichannel transceiver circuits, wherein forward link circuit is connected with reverse link circuit by duplexer；Forward link circuit includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, received first radiofrequency signal is converted to the first intermediate-freuqncy signal by the first frequency changer circuit, for first intermediate-freuqncy signal after the first band-pass filter, the second frequency changer circuit of input is converted to the second radiofrequency signal；Reverse link circuit includes third frequency changer circuit, second bandpass filter and the 4th frequency changer circuit, the third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by third frequency changer circuit, second intermediate-freuqncy signal is after second band-pass filter, it inputs the 4th frequency changer circuit and is converted to the 4th radiofrequency signal, it solves the problems, such as on the transmission circuit of multiplex communication to reduce the degree of disturbance between receiving and transmitting signal there are signal cross-talk between receiving and transmitting signal, improve the stability of transmission circuit.
Description
Technical field
The present invention relates to the communications fields, in particular to a kind of multiple signals sending and receiving methods and multichannel transceiver
Circuit.
Background technique
In the related art, the reverse link of receiver or uplink in multiplex communication (ReverseLink,
Referred to as REV) zero intermediate frequency scheme that uses, integrated analog-digital converter (Analog- is used after mixing with radiofrequency signal
To-Digital Converter, referred to as ADC), sampling obtains baseband signal, the forward direction of the transmitter in multiplex communication
Link or downlink (Forward Link, referred to as FWD) are also handled using same technological means, above-mentioned processing
Easily there is the reception signal of reverse link in method and the transmission signal of forward link goes out on the circuit board of the multiplex communication
The problem of existing crosstalk.
For in the related technology, asking there are signal cross-talk between receiving and transmitting signal on the transmission circuit of multiplex communication
Topic, currently no effective solution has been proposed.
Summary of the invention
For in the related technology, asking there are signal cross-talk between receiving and transmitting signal on the transmission circuit of multiplex communication
Topic, the present invention provides a kind of multiple signals sending and receiving methods and multichannel transceiver circuits, at least to solve the above problems.
According to an aspect of the invention, there is provided a kind of multichannel transceiver circuit, the circuit includes forward link electricity
Road and reverse link circuit, the forward link circuit and the reverse link circuit are connected by duplexer；
The forward link circuit includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, and described the
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by one frequency changer circuit, and first intermediate-freuqncy signal passes through described first
After band-pass filter, inputs second frequency changer circuit and be converted to the second radiofrequency signal；
The reverse link circuit includes third frequency changer circuit, the second bandpass filter and the 4th frequency changer circuit, and described
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by three frequency changer circuits, and second intermediate-freuqncy signal passes through described second
After band-pass filter, inputs the 4th frequency changer circuit and be converted to the 4th radiofrequency signal.
First amplifier of first frequency changer circuit, first filter and the first mixing in one of the embodiments,
Device is sequentially connected；The second amplifier, second filter and the second frequency mixer, the third amplifier, of second frequency changer circuit
One variable gain amplifier, first choice filter and send power amplifier be sequentially connected, the transmissions power amplifier and
The duplexer connection.
The reception power amplifier of the third frequency changer circuit, third filter, the 4th are put in one of the embodiments,
Big device, the second variable gain amplifier and third frequency mixer are sequentially connected；5th amplifier of the 4th frequency changer circuit, the 4th
Frequency mixer, the second selection filter and the 6th amplifier are sequentially connected, and the reception power amplifier is connect with the duplexer.
Of pcb board where multichannel transceiver circuit is arranged in the forward link circuit in one of the embodiments,
The second surface of the pcb board, the first surface and the second surface point is arranged in one surface, the reverse link circuit
Not Wei the pcb board two sides.
The forward link circuit further includes multiple receiving ports of multichannel, the reception in one of the embodiments,
Port is connect with first frequency changer circuit, is separated between multiple receiving ports with midfeather.
In one of the embodiments, it is characterized in that, the reverse link circuit further includes multiple transmitting terminals of multichannel
Mouthful, the sending port connect with the 4th frequency changer circuit, is separated between multiple sending ports with midfeather.
First power circuit of the forward link circuit and the reverse link circuit in one of the embodiments,
Second source circuit is provided separately.
According to another aspect of the present invention, a kind of multiple signals sending and receiving methods are additionally provided, the circuit includes
Forward link circuit and reverse link circuit, the forward link circuit and the reverse link circuit are connected by duplexer；
The forward link circuit includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, and described the
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by one frequency changer circuit, and first intermediate-freuqncy signal passes through described first
After band-pass filter, inputs second frequency changer circuit and be converted to the second radiofrequency signal；
The reverse link circuit includes third frequency changer circuit, the second bandpass filter and the 4th frequency changer circuit, and described
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by three frequency changer circuits, and second intermediate-freuqncy signal passes through described second
After band-pass filter, inputs the 4th frequency changer circuit and be converted to the 4th radiofrequency signal.
In one of the embodiments, of pcb board where multichannel transceiver circuit is arranged in the forward link circuit
The second surface of the pcb board, the first surface and the second surface point is arranged in one surface, the reverse link circuit
Not Wei the pcb board two sides.
In one of the embodiments, it is characterized in that, the forward link circuit further includes multiple receiving ends of multichannel
Mouthful, the receiving port connect with first frequency changer circuit, is separated between multiple receiving ports with midfeather；
The reverse link circuit further includes multiple sending ports of multichannel, and the sending port is connect with the 4th frequency changer circuit,
It is separated between multiple sending ports with midfeather.
Through the invention, multichannel transceiver circuit includes forward link circuit and reverse link circuit: forward link electricity
Road includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, which penetrates received first
Frequency signal is converted to the first intermediate-freuqncy signal, first intermediate-freuqncy signal after first band-pass filter, input this second
Frequency changer circuit is converted to the second radiofrequency signal；The reverse link circuit includes third frequency changer circuit, the second bandpass filter and
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by four frequency changer circuits, the third frequency changer circuit, second intermediate frequency letter
Number after second band-pass filter, inputs the 4th frequency changer circuit and be converted to the 4th radiofrequency signal, solve multichannel
There are problems that signal cross-talk between receiving and transmitting signal on the transmission circuit of communication system, reduces the interference between receiving and transmitting signal
Degree, improves the stability of transmission circuit.
Detailed description of the invention
The drawings described herein are used to provide a further understanding of the present invention, constitutes part of this application, this hair
Bright illustrative embodiments and their description are used to explain the present invention, and are not constituted improper limitations of the present invention.In the accompanying drawings:
Fig. 1 is a kind of structural block diagram of multichannel transceiver circuit according to an embodiment of the present invention；
Fig. 2 is the structural block diagram that a kind of forward link circuit according to an embodiment of the present invention is connected with duplexer；
Fig. 3 is the structural block diagram that a kind of reverse link circuit according to an embodiment of the present invention is connected with duplexer；
Fig. 4 is the structural schematic diagram of multiple receiving ports on a kind of circuit board according to an embodiment of the present invention；
Fig. 5 is the structural schematic diagram of multiple sending ports on a kind of circuit board according to an embodiment of the present invention；
Fig. 6 is a kind of process of multiple signals sending and receiving methods according to an embodiment of the present invention；
Fig. 7 is the circuit theory block schematic illustration of multichannel transmitting-receiving system according to an embodiment of the present invention.
Specific embodiment
Hereinafter, the present invention will be described in detail with reference to the accompanying drawings and in combination with Examples.It should be noted that not conflicting
In the case of, the features in the embodiments and the embodiments of the present application can be combined with each other.
In an embodiment of the present invention, a kind of multichannel transceiver circuit is provided, Fig. 1 is according to an embodiment of the present invention one
The structural block diagram of kind multichannel transceiver circuit, as shown in Figure 1, the device includes forward link circuit 100 and reverse link circuit
101, forward link circuit 100, reverse link circuit 101 and duplexer 102 connect；
The forward link circuit 100 includes the first frequency changer circuit 11, the first bandpass filter 12 and the second frequency changer circuit 13,
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by first frequency changer circuit 11, first intermediate-freuqncy signal by this
After the filtering of one bandpass filter 12, inputs second frequency changer circuit 13 and be converted to the second radiofrequency signal；
The reverse link circuit 101 includes third frequency changer circuit 14, the second bandpass filter 15 and the 4th frequency changer circuit 16,
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by the third frequency changer circuit 14, second intermediate-freuqncy signal by this
After two band-pass filter 15 filters, inputs the 4th frequency changer circuit 16 and be converted to the 4th radiofrequency signal.
By above-mentioned apparatus, in forward link circuit 100, the first radiofrequency signal can be mixed by the first frequency changer circuit 11
It is adjusted to the first intermediate-freuqncy signal, the first bandpass filter 12 can be used, first intermediate-freuqncy signal is filtered, adjustment first
The filtering property parameters of bandpass filter 12, improve the intermediate frequency rejection ratio of first intermediate-freuqncy signal, in addition, passing through the second variable-frequency electric
Road 12 is restored to second radiofrequency signal to first intermediate-freuqncy signal, which is mixed using frequency device
Frequently, amplify and filter, obtaining the second radiofrequency signal to be sent has good Out-of-band rejection ratio, equally, in reverse link circuit
In 101, received third radiofrequency signal can be mixed by third frequency changer circuit 14 and be adjusted to the second intermediate-freuqncy signal, can be used the
Two band-pass filter 15 is filtered second intermediate-freuqncy signal, adjusts the filtering property parameters of the second bandpass filter 15, mentions
The intermediate frequency rejection ratio of high second intermediate-freuqncy signal, in addition, mixing down to the to first intermediate-freuqncy signal by the 4th frequency changer circuit 16
Four radiofrequency signals, the reverse link circuit 101 are mixed using frequency device, are amplified and are filtered, frequency reducing after being received
4th radiofrequency signal has good Out-of-band rejection ratio, solves on the transmission circuit of multiplex communication and exists between receiving and transmitting signal
The problem of signal cross-talk, reduces the degree of disturbance between receiving and transmitting signal, improves the stability of transmission circuit.
In one embodiment, Fig. 2 is that a kind of forward link circuit according to an embodiment of the present invention is connected with duplexer
Structural block diagram, as shown in Fig. 2, the first amplifier 21 of first frequency changer circuit 11, first filter 22 and the first frequency mixer 23
It is sequentially connected；Second amplifier 24 of second frequency changer circuit 13, second filter 26 and the second frequency mixer 27, third amplifier
28, the first variable gain amplifier 29, first choice filter 210 and send power amplifier 211 be sequentially connected, this first
First radiofrequency signal is filtered in filter 22, which filters the first intermediate-freuqncy signal
Processing, first choice filter 210 are sent to duplexer 102, above-mentioned filter after second radiofrequency signal is filtered
The property parameters of the adjustable filtering of wave device, above-mentioned filtering processing improve the inhibition ratio for sending signal.
In one embodiment, Fig. 3 is that a kind of reverse link circuit according to an embodiment of the present invention is connected with duplexer
Structural block diagram, as shown in figure 3, the reception power amplifier 31 of the third frequency changer circuit 14, third filter 32, the 4th amplifier
33, the second variable gain amplifier 34 and third frequency mixer 35 are sequentially connected, and receive power amplifier 31 and duplexer 102 connects
It connects；The 5th amplifier 36, the 4th frequency mixer 37, second selection filter 38 and the 6th amplifier 39 of 4th frequency changer circuit 16
It is sequentially connected, the third radiofrequency signal is filtered in the third filter 32, the second selection filter 38 is to this
4th radiofrequency signal is filtered, the property parameters of the adjustable filtering of above-mentioned filtering device, above-mentioned filtering processing
Improve the inhibition ratio for receiving signal.
In one embodiment, which is arranged in circuit board where multichannel transceiver circuit
The pcb board is arranged in the first surface of (Printed Circuit Board, referred to as PCB), the reverse link circuit 101
Second surface, the first surface and the second surface are respectively the two sides of the pcb board, and the shielding attribute of PCB itself can shield
Interference between forward link circuit 100 and reverse link circuit 101, in addition it can by the of the forward link circuit 100
The second source circuit of one power circuit and the reverse link circuit 101 is provided separately, and avoids power supply to the biography of receiving and transmitting signal
Lead interference.
In one embodiment, Fig. 4 is the structure of multiple receiving ports on a kind of circuit board according to an embodiment of the present invention
Schematic diagram, as shown in figure 4, the forward link circuit 100 further includes 4 receiving ports on 4 tunnels, 100 institute of forward link circuit
PCB circuit board on 4 receiving ports include: P1, P2, P3 and P4, which connect with first frequency changer circuit 11,
It is separated between receiving port P1, P2, P3 and P4 with midfeather 42, separating for the midfeather 42 reduces different transmissions
Interference between signal link, and receiving port P1, P2, P3 and P4 can be set as being grounded, it will affect and send signal
Spurious signal is introduced into ground.
In one embodiment, Fig. 5 is the structure of multiple sending ports on a kind of circuit board according to an embodiment of the present invention
Schematic diagram, as shown in figure 5, the reverse link circuit 101 further includes 4 sending ports on 4 tunnels, which exists
PCB circuit board on 4 sending ports include: N1, N2, N3 and N4, which connect with the 4th frequency changer circuit 16, hair
It is separated between sending end mouth N1, N2, N3 and N4 with midfeather 52, separating for the midfeather 52 reduces different reception letters
Interference between number link, and can be by sending port: N1, N2, N3 and N4 are set as being grounded, and will affect and receive the miscellaneous of signal
Scattered signal is introduced into ground.
In one embodiment, active device will access the circuit board where the transmission circuit of the multiplex communication
When, magnetic material can be used and be isolated, for example, accessing the circuit board with the shielding case shielded power supply device of magnetic material
Part can isolate interference of the outer signals to receiving and transmitting signal on transmission circuit through the above way.
In another embodiment of the invention, a kind of multiple signals sending and receiving methods are provided, Fig. 6 is according to the present invention
A kind of process of multiple signals sending and receiving methods of embodiment, as shown in fig. 6, this method comprises the following steps:
Step S602, the forward link circuit 100 include the first frequency changer circuit 11, the first bandpass filter 12 and the second change
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by frequency circuit 13, first frequency changer circuit 11, first intermediate frequency letter
Number by first bandpass filter 12 filtering after, input second frequency changer circuit 13 and be converted to the second radiofrequency signal；
Step S604, the reverse link circuit 101 include third frequency changer circuit 14, and the second bandpass filter 15 and the 4th becomes
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by frequency circuit 16, the third frequency changer circuit 14, second intermediate frequency letter
Number by second bandpass filter 15 filtering after, input the 4th frequency changer circuit 16 and be converted to the 4th radiofrequency signal.
By above method step, in forward link circuit 100, the first radiofrequency signal can pass through the first frequency changer circuit 11
Mixing is adjusted to the first intermediate-freuqncy signal, and the first bandpass filter 12 can be used and be filtered to first intermediate-freuqncy signal, adjusts
The filtering property parameters of first bandpass filter 12, improve the intermediate frequency rejection ratio of first intermediate-freuqncy signal, in addition, becoming by second
Frequency circuit 12 is restored to second radiofrequency signal to first intermediate-freuqncy signal, the forward link circuit 100 using frequency device into
Row mixing, amplification and filtering, obtaining the second radiofrequency signal to be sent has good Out-of-band rejection ratio, equally, in reverse link
In circuit 101, received third radiofrequency signal can be mixed by third frequency changer circuit 14 and be adjusted to the second intermediate-freuqncy signal, can be made
Second intermediate-freuqncy signal is filtered with the second bandpass filter 15, the filtering attribute ginseng of the second bandpass filter 15 of adjustment
Number, improves the intermediate frequency rejection ratio of second intermediate-freuqncy signal, in addition, by the 4th frequency changer circuit 16 to the first intermediate-freuqncy signal frequency reducing
To the 4th radiofrequency signal, which is mixed using frequency device, is amplified and is filtered, dropped after being received
4th radiofrequency signal of frequency has good Out-of-band rejection ratio, solves on the transmission circuit of multiplex communication between receiving and transmitting signal
There are problems that signal cross-talk, reduce the degree of disturbance between receiving and transmitting signal, improves the stability of transmission circuit.
Below with reference to the design circuit framework of whole transmission circuit, the present invention is described in detail, and Fig. 7 is according to this
The circuit theory block schematic illustration of the multichannel transmitting-receiving system of inventive embodiments, as shown in Figure 7:
4 receiving ports, the amplifier 71 (Amplifier, referred to as AMP71), surface of the forward link circuit (FWD)
Filter 72 (Surface Acoustic Wave, abbreviation SAW72), frequency mixer 73 (referred to as MIXER73), bandpass filter 74
(Band-pass Filter, referred to as BPF74), amplifier 75 (referred to as AMP75), mix surface wave filter 76 (referred to as SAW76)
Frequency device 77 (referred to as MIXER77), amplifier 78 (referred to as AMP78), (the Digital Variable of variable gain amplifier 79
Gain Amplifie, referred to as DVA79), selection filter 710 (referred to as Filter710) and transmission power amplifier 711
(PowerAmplifier, referred to as PA711) is sequentially connected, wherein SAW72, BPF74, SAW76 and Filter710 are to hair
The number of delivering letters is filtered, and the property parameters of above-mentioned filtering device are adjustable, and the inhibition ratio for sending signal can be improved.
The reverse link circuit (REV) low noise amplifier 712 (Low Noise Amplifie, referred to as
LNA712), surface wave filter 713 (referred to as SAW713), amplifier 714 (referred to as AMP714), variable gain amplifier 715 (claim
(referred to as DVA715) frequency mixer 716 (referred to as MIXER716), bandpass filter 717 (referred to as BPF717), amplifier 718
AMP718), frequency mixer 719 (referred to as MIXER719), selection filter 720 (referred to as Filter720), amplifier 721 (referred to as
AMP721 it) is sequentially connected with 4 sending ports, wherein SAW713, BPF717 and Filter720 carry out reception signal
Filtering processing, and the property parameters of above-mentioned filtering device are adjustable, and the inhibition ratio for receiving signal can be improved.
Those of ordinary skill in the art will appreciate that realizing all or part of the process in above-described embodiment method, being can be with
Relevant hardware is instructed to complete by computer program, the computer program can be stored in a non-volatile computer
In read/write memory medium, the computer program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein,
To any reference of memory, storage, database or other media used in each embodiment provided herein,
Including non-volatile and/or volatile memory.Nonvolatile memory may include read-only memory (ROM), programming ROM
(PROM), electrically programmable ROM (EPROM), electrically erasable ROM (EEPROM) or flash memory.Volatile memory may include
Random access memory (RAM) or external cache.By way of illustration and not limitation, RAM is available in many forms,
Such as static state RAM (SRAM), dynamic ram (DRAM), synchronous dram (SDRAM), double data rate sdram (DDRSDRAM), enhancing
Type SDRAM (ESDRAM), synchronization link (Synchlink) DRAM (SLDRAM), memory bus (Rambus) direct RAM
(RDRAM), direct memory bus dynamic ram (DRDRAM) and memory bus dynamic ram (RDRAM) etc..
Each technical characteristic of above embodiments can be combined arbitrarily, for simplicity of description, not to above-described embodiment
In each technical characteristic it is all possible combination be all described, as long as however, the combination of these technical characteristics be not present lance
Shield all should be considered as described in this specification.
The several embodiments of the application above described embodiment only expresses, the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the concept of this application, various modifications and improvements can be made, these belong to the protection of the application
Range.Therefore, the scope of protection shall be subject to the appended claims for the application patent.
Claims (10)
1. a kind of multichannel transceiver circuit, which is characterized in that the circuit includes forward link circuit and reverse link circuit, institute
It states forward link circuit and is connected with the reverse link circuit by duplexer；
The forward link circuit includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, and described first becomes
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by frequency circuit, and first intermediate-freuqncy signal passes through first band logical
After filter filtering, inputs second frequency changer circuit and be converted to the second radiofrequency signal；
The reverse link circuit includes third frequency changer circuit, the second bandpass filter and the 4th frequency changer circuit, and the third becomes
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by frequency circuit, and second intermediate-freuqncy signal passes through second band logical
After filter filtering, inputs the 4th frequency changer circuit and be converted to the 4th radiofrequency signal.
2. circuit according to claim 1, which is characterized in that the first amplifier of first frequency changer circuit, the first filtering
Device and the first frequency mixer are sequentially connected；The second amplifier, second filter and the second frequency mixer of second frequency changer circuit,
Three amplifiers, the first variable gain amplifier, first choice filter and transmission power amplifier are sequentially connected, the transmission function
Rate amplifier is connect with the duplexer.
3. circuit according to claim 1, which is characterized in that the reception power amplifier of the third frequency changer circuit, third
Filter, the 4th amplifier, the second variable gain amplifier and third frequency mixer are sequentially connected；The of 4th frequency changer circuit
Five amplifiers, the 4th frequency mixer, the second selection filter and the 6th amplifier are sequentially connected, the reception power amplifier and institute
State duplexer connection.
4. circuit according to claim 1, which is characterized in that the forward link circuit is arranged in multichannel transceiver circuit institute
In the first surface of pcb board, the second surface of the pcb board, the first surface and institute is arranged in the reverse link circuit
State the two sides that second surface is respectively the pcb board.
5. according to claim 1 to any one of 4 circuits, which is characterized in that the forward link circuit further includes multichannel
Multiple receiving ports, the receiving port are connect with first frequency changer circuit, are spaced between multiple receiving ports
Wall is separated.
6. according to claim 1 to any one of 4 circuits, which is characterized in that the reverse link circuit further includes multichannel
Multiple sending ports, the sending port are connect with the 4th frequency changer circuit, are spaced between multiple sending ports
Wall is separated.
7. according to claim 1 to any one of 4 circuits, which is characterized in that the first power supply electricity of the forward link circuit
The second source circuit of road and the reverse link circuit is provided separately.
8. a kind of multiple signals sending and receiving methods, which is characterized in that the circuit includes forward link circuit and reverse link
Circuit, the forward link circuit and the reverse link circuit are connected by duplexer；
The forward link circuit includes the first frequency changer circuit, the first bandpass filter and the second frequency changer circuit, and described first becomes
Received first radiofrequency signal is converted to the first intermediate-freuqncy signal by frequency circuit, and first intermediate-freuqncy signal passes through first band logical
After filter filtering, inputs second frequency changer circuit and be converted to the second radiofrequency signal；
The reverse link circuit includes third frequency changer circuit, the second bandpass filter and the 4th frequency changer circuit, and the third becomes
The third radiofrequency signal of transmission is converted to the second intermediate-freuqncy signal by frequency circuit, and second intermediate-freuqncy signal passes through second band logical
After filter filtering, inputs the 4th frequency changer circuit and be converted to the 4th radiofrequency signal.
9. method according to claim 8, which is characterized in that the forward link circuit is arranged in multichannel transceiver circuit institute
In the first surface of pcb board, the second surface of the pcb board, the first surface and institute is arranged in the reverse link circuit
State the two sides that second surface is respectively the pcb board.
10. according to any one of claim 8 or 9 the method, which is characterized in that the forward link circuit further includes multichannel
Multiple receiving ports, the receiving port are connect with first frequency changer circuit, are spaced between multiple receiving ports
Wall is separated；The reverse link circuit further includes multiple sending ports of multichannel, and the sending port and the described 4th become
Frequency circuit connects, and is separated between multiple sending ports with midfeather.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888751.4A CN110535487A (en) | 2019-09-19 | 2019-09-19 | A kind of multiple signals sending and receiving methods and multichannel transceiver circuit |
| PCT/CN2020/115538 WO2021052357A1 (en) | 2019-09-19 | 2020-09-16 | Multi-channel signal transmission and reception method and multi-channel transceiver circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910888751.4A CN110535487A (en) | 2019-09-19 | 2019-09-19 | A kind of multiple signals sending and receiving methods and multichannel transceiver circuit |
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| CN110535487A true CN110535487A (en) | 2019-12-03 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021052357A1 (en) * | 2019-09-19 | 2021-03-25 | 三维通信股份有限公司 | Multi-channel signal transmission and reception method and multi-channel transceiver circuit |
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