CN110071887B - Carrier phase dense modulation device and method - Google Patents

Carrier phase dense modulation device and method Download PDF

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CN110071887B
CN110071887B CN201910398448.6A CN201910398448A CN110071887B CN 110071887 B CN110071887 B CN 110071887B CN 201910398448 A CN201910398448 A CN 201910398448A CN 110071887 B CN110071887 B CN 110071887B
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state gate
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CN110071887A (en
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李继远
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JINAN JINGHENG ELECTRONICS CO Ltd
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JINAN SEMICONDUCTOR RESEARCH INSTITUTE
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    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03CMODULATION
    • H03C3/00Angle modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems
    • H04L27/18Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20Modulator circuits; Transmitter circuits

Abstract

The present disclosure discloses a carrier phase dense modulation apparatus and method, including: a carrier signal source; the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring; the wavelength ring carries out phase modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting antenna through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting antenna. The communication speed of the frequency band can be improved by N times.

Description

Carrier phase dense modulation device and method
Technical Field
The present disclosure relates to the field of phase modulation technologies, and in particular, to a carrier phase dense modulation apparatus and method.
Background
The statements in this section merely provide background information related to the present disclosure and may not constitute prior art.
In the course of implementing the present disclosure, the inventors found that the following technical problems exist in the prior art:
the mobile communication develops from 1,2,3,4 and 5G, the transmission rate is gradually increased, and the 3G transmission rate is 120 k-600 kb; 4G transmission rate is 1.5M/S-10M/S; 5G transmission rate 2G-6 GB/S; the frequencies used by China for 5G are 3.3 to 3.6GHz and 4.8 to 5 GHz; collecting use opinions: 24.75-27.5 GHz; 37-42.5 GHz; international 28GHz.
5G communication characteristics, large broadband, low time delay and wide connection. 5G interface standard: the new air interface (NewRadio) is a 2,3, 4G large fusion. Multiple antenna array technologies, such as hua shi, ericsson, samsung antennas: 64T × 64R; the multiple-input multiple-output technology, D2D and M2M, directly communicate with a mobile terminal and an internet of things terminal under the same base station without receiving astronomical signals from the base station.
The base station employs 5G for mobile terminals, and the mobile terminal transmits to the base station employing 4G technology.
The multiplexing technique is still adopted: FDMA, TDMA, CDMA, or compliant techniques.
With the development of the information society, the information capacity is increased explosively, and although the 5G transmission rate is increased by hundreds of times compared with 4G transmission rate, the information is congested after years.
Disclosure of Invention
In order to solve the defects of the prior art, the disclosure provides a carrier phase dense modulation device and method, which achieve the effects of high channel use efficiency and good use effect, and use resources with low cost and high efficiency;
in a first aspect, the present disclosure provides a carrier phase dense modulation apparatus;
a carrier phase dense modulation apparatus comprising: a carrier signal source;
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, the input end of the metal waveguide line is not connected with the output end of the metal waveguide line, the input end and the output end are not closed, and the input end and the output end jointly form a gap of the circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a signal to be transmitted, and the output end of each tri-state gate is connected with a transmitting device;
the wavelength ring carries out phase intensive modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting device through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting device.
The output end of the tri-state gate is connected with the transmitting device, and the output end of the tri-state gate is connected with the transmitting device through the following steps: the output end of the tri-state gate is connected with the power amplifier, and the power amplifier is connected with the antenna.
In a second aspect, the present disclosure also provides a carrier phase dense modulation method;
the carrier phase dense modulation method comprises the following steps:
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, and the input end of the metal waveguide line is not connected with the output end of the metal waveguide line; the input end and the output end are not closed, and the input end and the output end jointly form a gap of a circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a signal to be transmitted, and the output end of each tri-state gate is connected with a transmitting device;
the wavelength ring carries out phase intensive modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting device through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting device.
Compared with the prior art, the beneficial effect of this disclosure is:
the wavelength ring carries out phase intensive modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting antenna through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting antenna; the method and the device have the advantages that the multi-channel signals to be transmitted are rapidly transmitted, the transmission rate is increased, the equipment operation efficiency is improved, and the operation cost is reduced.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the application and, together with the description, serve to explain the application and are not intended to limit the application.
FIG. 1 is a schematic diagram of a wavelength ring implementing a phase angle dense modulation scheme;
FIG. 2 is a digital signal representation of a wireless channel;
FIG. 3 is a diagram of phase angle modulation with 22.5 degree spacing and 16 channel multiplexing;
FIG. 4 illustrates a method for loading digital signals according to the present disclosure;
FIG. 5 is a schematic diagram of a wavelength ring of the present disclosure;
fig. 6 is a schematic diagram of a tri-state gate of the present disclosure.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
In a first embodiment, the present disclosure provides a carrier phase dense modulation apparatus;
as shown in fig. 1, the carrier phase dense modulation apparatus includes: a carrier signal source;
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, and the input end of the metal waveguide line is not connected with the output end of the metal waveguide line; the input end and the output end are not closed, and the input end and the output end jointly form a gap of a circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a device to be transmitted, and the output end of each tri-state gate is connected with a transmitting device;
the wavelength ring carries out phase intensive modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting device through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting device.
As one or more embodiments, the periphery of the metal waveguide line is uniformly distributed with a plurality of waveguide connectors along the circumferential direction, and the waveguide connectors are respectively arranged at a phase of 0,
Figure GDA0003082643140000051
The position of (a).
As one or more embodiments, the wavelength ring performs phase-intensive modulation on the carrier signal, and after the carrier signal is phase-modulated by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase; the method comprises the following specific steps:
carrying out phase modulation on the carrier signal;
during phase modulation, the phase of the first modulated carrier signal is phi0;φ0Is the initial phase of the carrier signal; the phase of the second modulated carrier signal is
Figure GDA0003082643140000052
By analogy, the phase of the i-th modulated carrier signal is
Figure GDA0003082643140000053
The phase of the last modulated carrier signal is
Figure GDA0003082643140000054
m is a positive integer; i ranges from 1 to 2m
After the carrier signal is modulated by the phase of the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase;
the first modulated carrier signal is transmitted to the input end of the tri-state gate through the waveguide connector with the phase being 0;
the second modulated carrier signal has a transit phase of
Figure GDA0003082643140000055
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the i-th modulated carrier signal having a transit phase of
Figure GDA0003082643140000056
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the last modulated carrier signal has a transit phase of
Figure GDA0003082643140000061
The waveguide connector of (a) is fed to the input of the tri-state gate.
As one or more embodiments, the phase modulation specifically comprises the following steps:
Figure GDA0003082643140000062
wherein, yn(x, t) represents the nth phase modulated carrier signal; x represents a carrier signal before modulation; t represents time; a. themRepresenting the amplitude of the carrier signal; w represents the frequency of the carrier signal; k represents the wave number, phi0Representing an initial phase of the carrier signal; n ranges from 1 to 2m-1。
As shown in fig. 5, assuming that 16 waveguide connectors on the wavelength ring are numbered 0-15, one end of the metal waveguide line of the wavelength ring is an input end of the carrier signal, and the other end of the metal waveguide line of the wavelength ring is an output end of the carrier signal. The waveguide connectors numbered from 0 to 15 respectively realize the transmission of modulated carrier signals, and the modulated carrier signals are superposed with one path of signals to be transmitted by using a tri-state gate and then transmitted out through an antenna.
When the signal to be transmitted has multiple paths, the signal to be transmitted searches for an idle tri-state gate, and the signal to be transmitted is transmitted through the idle tri-state gate. Two carriers with phases different by 180 degrees are forbidden to be used in the same direction, and transmitting antennas have directivity and can be used in different directions.
In a second embodiment, the present disclosure provides a carrier phase dense modulation method;
the carrier phase dense modulation method comprises the following steps:
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, and the input end of the metal waveguide line is not connected with the output end of the metal waveguide line; the input end and the output end are not closed, and the input end and the output end jointly form a gap of a circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a signal to be transmitted, and the output end of each tri-state gate is connected with a transmitting device;
the wavelength ring carries out phase intensive modulation on the carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase, the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to the transmitting antenna through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting antenna.
As one or more embodiments, the periphery of the metal waveguide line is uniformly distributed with a plurality of waveguide connectors along the circumferential direction, and the waveguide connectors are respectively arranged at a phase of 0,
Figure GDA0003082643140000071
The position of (a).
As one or more embodiments, the wavelength ring performs phase-intensive modulation on the carrier signal, and after the carrier signal is phase-modulated by the wavelength ring, the carrier signal is sent to the input end of the tri-state gate through the waveguide connector with the corresponding phase according to the modulated phase; the method comprises the following specific steps:
carrying out phase modulation on the carrier signal;
during phase modulation, the phase of the first modulated carrier signal is phi0;φ0Is the initial phase of the carrier signal; the phase of the second modulated carrier signal is
Figure GDA0003082643140000072
By analogy, the phase of the i-th modulated carrier signal is
Figure GDA0003082643140000073
The phase of the last modulated carrier signal is
Figure GDA0003082643140000074
m is a positive integer; i ranges from 1 to 2m
After the carrier signal is modulated by the phase of the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase;
the first modulated carrier signal is transmitted to the input end of the tri-state gate through the waveguide connector with the phase being 0;
the second modulated carrier signal has a transit phase of
Figure GDA0003082643140000075
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the i-th modulated carrier signal having a transit phase of
Figure GDA0003082643140000081
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the last modulated carrier signal has a transit phase of
Figure GDA0003082643140000082
The waveguide connector of (a) is fed to the input of the tri-state gate.
As one or more embodiments, the phase modulation specifically comprises the following steps:
Figure GDA0003082643140000083
wherein, yn(x, t) represents the nth phase modulated carrier signal; x represents a carrier signal before modulation; t represents time; a. themRepresenting the amplitude of the carrier signal; w represents the frequency of the carrier signal; k represents the wave number, phi0Representing an initial phase of the carrier signal; n ranges from 1 to 2m-1。
The current multiplexing and modulation schemes:
x(t)=AMsin(2πfjt+φn) (1)
the distinction between signal states is made in three ways, the first, with different amplitudes, representing the signal, called amplitude modulation mode.
The earliest broadcasts used this mode. Has the disadvantages of easy interference and low carrying signal capacity.
Second, the signal is represented at different frequencies, called frequency modulated mode. The effect is good and the anti-interference ability is strong. Is widely used,
And the third is that: the different phase angles represent signals-called phase modulation modes.
For use in digital communications. In the state of the prior art, the three modulation modes have the problems of dense modulation, difficult identification, low carrying signal capacity and the like.
Although 3,4,5G mobile communication currently implements digital communication, digital signals are expressed in pulses. But the physical signal propagating in the wireless space channel still has a pulse shape, and a section of sinusoidal electromagnetic wave form is still in the pulse, as shown in fig. 2.
x(t)=AMsin(2πfjt+φn) The use of frequency resources of a radio channel is exhausted, and the frequency resources are almostAnd (4) the product is used up.
The frequencies used by China for 5G are 3.3 to 3.6GHz, and 4.8 to 5 GHz.
Frequency applicability of the 5G channel:
B=Δf=3.6GHz-3.3GHz=300MHz
B2=5-4.8=0.2GHz=200MHz
the shannon principle: maximum information transfer capacity
Figure GDA0003082643140000091
Where, C- -channel transmission capacity; s- - -a signal; b- -channel bandwidth; n-noise
The frequency reuse range is limited, and the phase modulation and the precise modulation are vigorously developed to be called as future technology selection
The wavelength phase modulation method is characterized in that a wavelength is spatially one, and a spatial phase angle 2 pi corresponding to a sine wave function is uniformly divided into a plurality of equal parts to represent signals. The modulation is easy to implement accurately as shown in fig. 3.
Phase angle modulation: Δ θ is 22.5 °
How to realize technically, the conversion from space phase angle to time phase angle is adopted
General expression of electromagnetic wave function:
Figure GDA0003082643140000092
Figure GDA0003082643140000093
when ω t is 22.5,
Figure GDA0003082643140000094
to obtain
Figure GDA0003082643140000095
The wavelength is divided into 16 equal parts, the equal division point is taken as a sampling point, and the adjacent phase difference of the output waves is 22.5
As shown in fig. 4, a carrier signal source is input to the inlet end of the wavelength ring waveguide:
Figure GDA0003082643140000101
the phase angle of the output electromagnetic wave at the outlet of the first branch of the wavelength ring is lagged by 22.5 degrees compared with the phase angle of the input electromagnetic wave, and the phase angle is written as
Figure GDA0003082643140000102
Corresponding to the outlet of the Nth branch, the output electromagnetic wave lags behind the electromagnetic wave of the wavelength loop inlet by 22.3N
Figure GDA0003082643140000103
The loading method of the digital signal comprises the following steps: such as parallel transmission, a 16-bit digital signal can be transmitted at a time
As shown in fig. 6, the digital signal serves as a control terminal signal of the tri-state gate corresponding to the mode. When the control end is a high-level digital 1, the tri-state gate is switched on and is in a low-resistance state, the electromagnetic wave signal smoothly passes through the tri-state gate, and the passing duration is the pulse width of the digital signal. When the digital signal is 0, the low level state is closed by the tri-state gate. The output terminal is 0.
Or the serial input can be carried out, and 16 paths of serial data signals can be transmitted, wherein each path of digital signals serves as a control signal of the three-state gate. And the serial connection is not changed much.
For a 5G communication bandwidth, bandwidth 500MHz, if carrier spacing. A carrier dense mode may be implemented. With the current channel spacing, a phase angle intensive communication mode is adopted, and the communication capacity can be improved by 16 times.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (6)

1. The carrier phase dense modulation device is characterized by comprising: a carrier signal source;
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, and the input end of the metal waveguide line is not connected with the output end of the metal waveguide line; the input end and the output end are not closed, and the input end and the output end jointly form a gap of a circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a signal to be transmitted, and the output end of each tri-state gate is connected with a transmitting antenna;
the wavelength ring carries out phase intensive modulation on a carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase, and the specific steps comprise:
carrying out phase modulation on the carrier signal;
during phase modulation, the phase of the first modulated carrier signal is phi0;φ0Is the initial phase of the carrier signal; the phase of the second modulated carrier signal is
Figure FDA0003082643130000011
By analogy, the phase of the i-th modulated carrier signal is
Figure FDA0003082643130000012
The last one is regulatedThe phase of the carrier signal being
Figure FDA0003082643130000013
m is a positive integer; i ranges from 1 to 2m
After the carrier signal is modulated by the phase of the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase;
the first modulated carrier signal is transmitted to the input end of the tri-state gate through the waveguide connector with the phase being 0;
the second modulated carrier signal has a transit phase of
Figure FDA0003082643130000014
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the i-th modulated carrier signal having a transit phase of
Figure FDA0003082643130000021
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the last modulated carrier signal has a transit phase of
Figure FDA0003082643130000022
The waveguide connector of (2) is fed into the input end of the tri-state gate;
and the signal to be transmitted and the modulated carrier signal are superposed, and after superposition, the signal is transmitted to a transmitting device through the output end of the tri-state gate, and finally the signal is transmitted out through the transmitting device.
2. The apparatus of claim 1, wherein a plurality of waveguide connectors are uniformly distributed in a circumferential direction around the metal waveguide wire, the waveguide connectors being respectively disposed at a phase of 0,
Figure FDA0003082643130000023
Figure FDA0003082643130000024
M is a positive integer.
3. The apparatus of claim 1, wherein the phase modulation comprises the steps of:
Figure FDA0003082643130000025
wherein, yn(x, t) represents the nth phase modulated carrier signal; x represents a carrier signal before modulation; t represents time; a. themRepresenting the amplitude of the carrier signal; w represents the frequency of the carrier signal; k represents the wave number, phi0Representing an initial phase of the carrier signal; n ranges from 1 to 2m-1。
4. The carrier phase dense modulation method is characterized by comprising the following steps:
the carrier signal source sends out a carrier signal, and the carrier signal is processed by the voltage follower and then sent to the input end of the wavelength ring;
the wavelength rings are all a metal waveguide line, the metal waveguide line body is encircled into a circular ring, and the input end of the metal waveguide line is not connected with the output end of the metal waveguide line; the input end and the output end are not closed, and the input end and the output end jointly form a gap of a circular ring; a plurality of waveguide connectors are uniformly distributed on the periphery of the metal waveguide wire along the circumferential direction, one end of each waveguide connector is connected with the metal waveguide wire, the other end of each waveguide connector is connected with a corresponding tri-state gate, the control end of each tri-state gate is connected with a signal to be transmitted, and the output end of each tri-state gate is connected with a transmitting device;
the wavelength ring carries out phase intensive modulation on a carrier signal, after the carrier signal is subjected to phase modulation by the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase, and the specific steps comprise:
carrying out phase modulation on the carrier signal;
during phase modulation, the phase of the first modulated carrier signal is phi0;φ0Is the initial phase of the carrier signal; the phase of the second modulated carrier signal is
Figure FDA0003082643130000031
By analogy, the phase of the i-th modulated carrier signal is
Figure FDA0003082643130000032
The phase of the last modulated carrier signal is
Figure FDA0003082643130000033
m is a positive integer; i ranges from 1 to 2m
After the carrier signal is modulated by the phase of the wavelength ring, the carrier signal is sent to the input end of the three-state gate through the waveguide connector with the corresponding phase according to the modulated phase;
the first modulated carrier signal is transmitted to the input end of the tri-state gate through the waveguide connector with the phase being 0;
the second modulated carrier signal has a transit phase of
Figure FDA0003082643130000034
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the i-th modulated carrier signal having a transit phase of
Figure FDA0003082643130000035
The waveguide connector of (2) is fed into the input end of the tri-state gate;
the last modulated carrier signal has a transit phase of
Figure FDA0003082643130000036
The waveguide connector of (2) is fed into the input end of the tri-state gate;
and the signal to be transmitted is superposed with the modulated carrier signal, and is transmitted to a transmitting antenna through the output end of the tri-state gate after superposition, and finally the signal is transmitted out through the transmitting antenna.
5. The method according to claim 4, wherein a plurality of waveguide connectors are uniformly distributed in a circumferential direction around the metal waveguide wire, the waveguide connectors being respectively disposed at a phase of 0,
Figure FDA0003082643130000041
Figure FDA0003082643130000042
M is a positive integer.
6. The method of claim 4, wherein the phase modulation comprises the steps of:
Figure FDA0003082643130000043
wherein, yn(x, t) represents the nth phase modulated carrier signal; x represents a carrier signal before modulation; t represents time; a. themRepresenting the amplitude of the carrier signal; w represents the frequency of the carrier signal; k represents the wave number, phi0Representing an initial phase of the carrier signal; n ranges from 1 to 2m-1。
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