CN102045090B

CN102045090B - Method and device for realizing seamless coverage of waveguide tube signals

Info

Publication number: CN102045090B
Application number: CN 200910235795
Authority: CN
Inventors: 步兵; 曾祥益
Original assignee: BEIJING RUIANSHIDAI TECHNOLOGY Co Ltd
Current assignee: BEIJING RUIANSHIDAI TECHNOLOGY Co Ltd
Priority date: 2009-10-15
Filing date: 2009-10-15
Publication date: 2013-08-21
Anticipated expiration: 2029-10-15
Also published as: CN102045090A

Abstract

The invention relates to the field of communication data transmission, in particular to a method and a device for realizing the seamless coverage of waveguide tube signals. The method comprises the following steps of: 1, arranging a wave transmission device at a breaking point of a waveguide tube section; and 2, adjusting the radio signal intensity in a covered breaking point area by changing the wave transmissivity of the wave transmission device. The problem on the wireless coverage of breaking point areas of all types of waveguide tubes is solved; the radio signal intensity of the covered breaking point area can be adjusted; the phenomenon of continuous packet loss in a signal transmission process is avoided; and the signal transmission performance is greatly improved.

Description

Method and device for realizing seamless coverage of waveguide signals

Technical Field

The invention relates to the field of communication data transmission, in particular to a method and a device for realizing seamless coverage of waveguide signals.

Background

The transmission of data using spatial free waves is subject to interference from outside the system. Especially, when the wireless transmitting device and the wireless receiving device operate in the open Industrial, Scientific and Medical (ISM) band that can be used without authorization, the possibility of external co-channel interference is higher, because many household devices (such as wireless mouse, bluetooth headset, microwave oven, etc.) operate in this band. In addition, when signals are simultaneously transmitted by using free waves in space, signals transmitted by a transmitter are easily affected by multipath, shadow fading and doppler shift, and thus the amplitude of received signals will be changed drastically. In addition, the data is transmitted by using the space free wave, and the data can be monitored, attacked and interfered by illegal users, so that the problem of safety cannot be ignored. In view of the above disadvantages of free wave transmission, in some special application scenarios where the requirements on real-time performance and security of transmission are high, it is considered to use other propagation media to transmit data.

In the prior art, it is effective to transmit wireless signals by using leaky cables and to transmit wireless signals by using leaky waveguides.

The first way is to transmit wireless signals using leaky cables. The leaky cable is formed by opening a gap on the outer conductor of the coaxial cable according to a certain rule (the specific rule is determined according to the characteristics of a transmission signal), so that the electromagnetic wave energy transmitted in the cable is uniformly radiated out through the gap. Similarly, external electromagnetic waves can also be transmitted into the cable through the gap. The method has the following advantages:

(1) the influence of multipath is small, and the field intensity of the radiation signal is stable;

(2) external signals can be coupled into the leaky cable to form interference signals only through the gap in a short distance, and the anti-interference capability of the leaky cable for transmitting wireless signals is high.

Meanwhile, the method has the following defects:

(1) the loss of the leaky cable for transmitting high-frequency signals is high, and the transmission loss of 2.4GHz signals is about 0.06 dB/m;

(2) the coupling loss of the leaky cable is high, and the coupling loss of 2.4GHz signals is about 69 dB;

(3) the cable laying mode and the laying environment also have influence on the cable radiation effect;

(4) the leaky cable needs to be laid continuously, so that the construction difficulty is high;

(5) under the influence of environment, a leaky cable cannot be installed in an individual place, so that the communication link is interrupted instantaneously;

(6) under the same distance, the cost of the leaky cable transmission mode is far higher than that of the wireless free wave transmission mode.

Among the above disadvantages, the method of transmitting wireless signals using leaky cables is not suitable for the technical field of transmitting high frequency signals over long distances, mainly due to the high coupling loss and transmission loss.

In addition to the method of transmitting a wireless signal using a leaky cable, there is also a method of transmitting a wireless signal using a leaky waveguide. The rectangular waveguide tube is a hollow metal tube and presents the characteristic of a high-pass filter in the field of electrical technology; the waveguide tube is made of non-ferromagnetic metal material with high conductivity, is filled with air, has a rectangular cross section, and needs to be provided with holes at certain intervals, shapes and sizes along the axial direction, so that energy can be radiated from the waveguide tube, and external signals can also enter the waveguide tube through the holes. As shown in fig. 1, the rectangular waveguide has a wide dimension a and a narrow dimension b.

Rectangular waveguide TE₁₀Attenuation constant equation for the mode:

a_{c} = \frac{8.686 R_{S}}{120 π \sqrt{1 - {(\frac{λ}{2 a})}^{2}}} [1 + 2 \frac{b}{a} {(\frac{λ}{2 a})}^{2}] (dB / m)

wherein: a is_cIs the rectangular waveguide TE₁₀The attenuation constant of the mode; r_SIs the conductor surface resistance; λ is the operating wavelength.

R_{S} = \sqrt{πfu / σ}

Wherein: f is the working frequency; u is the permeability of the waveguide conductor; σ is the conductivity of the waveguide conductor.

The waveguide reduces signal transmission loss mainly by several factors:

(1) the waveguide is made of non-ferromagnetic material with high conductivity to make R_SThe size is as small as possible;

(2) increasing the height b of the waveguide enables the attenuation of the signal to be reduced, but when

b > \frac{a}{2}

The single-mode working frequency band of the time signal is narrowed, so the attenuation and the frequency band of the signal should be considered together, and generally

b = \frac{a}{2}

The waveguide of (a) is called a standard waveguide;

(3) the attenuation of the signal is related to the frequency of the transmitted signal. Given the dimensions of a rectangular waveguide, the attenuation of a signal decreases with increasing frequency and increases after a minimum occurs. There is a start frequency and a stop frequency in the range of which the transmission signal can be transmitted with low loss in the rectangular waveguide. The start and stop frequencies depend on the broadside dimension a of the rectangular waveguide.

The method for transmitting wireless signals by using the waveguide has the following advantages:

(2) external signals can be coupled into the waveguide tube to form interference signals only through the gap in a short distance, and the waveguide tube has strong anti-interference capability when transmitting wireless signals;

(3) the influence of the waveguide tube laying mode and the laying environment on the waveguide tube radiation effect is small;

(4) for high frequency signals, the transmission loss of the waveguide is relatively low.

Meanwhile, the method has the following defects:

(1) the coupling loss of the waveguide tube is high, and the coupling loss of 2.4GHz signals is about 65 dB;

(2) the waveguide tube needs to be laid continuously, so that the construction difficulty is high;

(3) due to the influence of the environment, the waveguide cannot be installed in a certain place, and the instantaneous interruption of a communication link is caused;

(4) under the same distance, the cost of the waveguide transmission mode is far higher than that of the wireless free wave transmission mode, and the cost of the waveguide transmission mode is also higher than that of the leaky cable transmission mode.

Although the cost of waveguide transmission is high, the construction difficulty is large. However, in view of the outstanding advantages of being suitable for transmitting high-frequency signals and having high anti-interference capability and safety, the waveguide transmission mode has been widely used in special application scenarios with high requirements on the reliability and safety of high-frequency wireless signal transmission. Presently, waveguide applications are demanding solutions to the problem of signal coverage in the break-out region of the waveguide. When the transmitter/receiver is located in the breakpoint region, it will cause instantaneous interruption of the transmission link, causing continuous packet loss. The length of the continuous packet loss depends on the dwell time and data transmission rate of the transmitter/receiver in the breakpoint region. For real-time control systems that communicate control information using communications, such a large number of consecutive packet losses is unacceptable. A large number of consecutive packet losses will cause instantaneous interruption of communication between the controlling party and the controlled party, reducing the efficiency of control and causing potential safety hazards.

As shown in fig. 2, a typical waveguide segment is made up of multiple waveguides connected by flanges. A coaxial converter 202 is installed at the beginning of the waveguide section, and the signal source 201 converts the electrical signal into an electromagnetic wave by the coaxial converter 202 and propagates in the waveguide section. A matching load 205 is installed at the end of the waveguide section for absorbing the echo and avoiding the formation of standing waves of electromagnetic waves in the waveguide section. In order to increase the signal strength at the end of the waveguide section, an open-circuit piece may be attached to the end of the waveguide section, and the electromagnetic wave signal propagating through the waveguide may be reflected back after reaching the open-circuit piece at the end of the waveguide section. The closer to the end of the waveguide section, the higher the intensity of the reflected signal, thereby increasing the signal intensity at the end of the waveguide section.

There are several breakpoint situations in waveguide applications:

(1) the break point between two waveguide segments is specifically classified into 3 cases:

case 1: as shown in fig. 3, the end of the previous waveguide segment is adjacent to the beginning of the next waveguide segment;

case 2: as shown in fig. 4, the end of the previous waveguide segment is adjacent to the end of the next waveguide segment;

case 3: as shown in fig. 5, the beginning of the previous waveguide segment is adjacent to the beginning of the next waveguide segment.

(2) A break point in one waveguide section. As shown in fig. 6, the break is in the middle of a waveguide segment, and two coaxial transducers 603/604 are connected across the break by coaxial cables 606.

One prior art approach to break points in waveguide segments is shown in fig. 7, which uses a dual port coaxial transducer 703, one port for connection to another coaxial transducer 704, and another port for connection to an antenna 706 covering the break point area. However, this method has the following drawbacks:

(1) the output power of the two ports of the coaxial converter is the same, but the transmission power of the port connected with the antenna cannot be adjusted, so that the output power of the port connected with the coaxial cable is half of the input power, which is equivalent to half of the reduction of the transmission power, and the length of the waveguide tube section needs to be properly shortened to meet the requirement of the received signal strength.

(2) The matched load is required to be installed at the tail ends of the waveguide sections, so that the problem of wireless coverage of breakpoint areas adjacent to the tail ends of the two waveguide sections cannot be solved by the method;

(3) external signals can enter the waveguide tube through the wireless antenna to form interference;

(4) the outside can receive the signal that this wireless antenna transmitted, has reduced the security of communication system.

In summary, the method for covering the breakpoint region by using the dual-port coaxial converter and the antenna in the prior art cannot solve the wireless coverage of all types of breakpoint regions, and the method reduces the safety and the anti-interference capability of waveguide transmission.

Disclosure of Invention

The invention provides a method for realizing seamless coverage of waveguide signals, aiming at solving the problem that the signal coverage is difficult to solve due to the existence of an interruption area in a waveguide in the mode of transmitting wireless signals by a leaky waveguide, which comprises the following steps:

step 1, arranging a wave-transmitting device at a breakpoint of a waveguide section;

and 2, adjusting the wireless signal intensity covering the breakpoint area by changing the wave transmission rate of the wave transmission device.

The wave-transmitting device is a wave-transmitting coaxial converter arranged at the beginning end of the waveguide section, and one end face of the wave-transmitting coaxial converter, which is perpendicular to the axial direction of the waveguide tube, can transmit wireless signals.

The wave-transmitting device is a wave-transmitting matching load arranged at the tail end of the waveguide section, and one end face of the wave-transmitting matching load, which is perpendicular to the axial direction of the waveguide tube, can transmit wireless signals.

The wave-transmitting device is a wave-transmitting semi-open sheet arranged at the tail end of the waveguide section, and the end face, perpendicular to the axial direction of the waveguide tube, of the wave-transmitting semi-open sheet can transmit wireless signals.

Wave-transmitting sheets with different wave-transmitting rates are additionally arranged on the end face, and the wave-transmitting rate of the wave-transmitting device is changed by selecting the wave-transmitting sheets with different wave-transmitting rates.

In addition, the invention also provides a device for realizing the seamless coverage of the waveguide tube signals, which is characterized by comprising a flange plate and a wave-transparent end surface;

the flange plate is welded on one end face of the device, which is vertical to the axial direction of the waveguide tube, and is connected with the waveguide tube and the wave-transmitting device;

the wave-transmitting end face is perpendicular to the axial direction of the waveguide tube, and a wave-transmitting rate adjusting baffle plate can be additionally arranged and is a wave-transmitting plate with wave-transmitting capacity.

The device can be a wave-transparent coaxial converter, and the wave-transparent coaxial converter further comprises a vibrator and a waveguide cavity;

the vibrator is arranged in the waveguide cavity and converts the electric signal into electromagnetic wave to be transmitted in the waveguide;

the waveguide cavity is used for transmitting electromagnetic wave signals with specific frequency;

the device can also be a wave-transparent matched load, and the wave-transparent matched load also comprises a wave-absorbing material and a waveguide cavity;

the wave-absorbing material is arranged in the waveguide cavity and used for absorbing echoes;

the device may also be a wave-transparent semi-open sheet.

The wave-transmitting plate can be additionally arranged on the wave-transmitting end face of the wave-transmitting coaxial converter or the wave-transmitting matched load or the wave-transmitting semi-open-circuit plate, the wave-transmitting rate of the wave-transmitting coaxial converter, the wave-transmitting matched load and the wave-transmitting semi-open-circuit plate is changed by selecting the wave-transmitting plates with different wave-transmitting rates, the wireless signal coverage intensity of the targeted breakpoint area is adjusted, and the loss of wireless signals in the transmission process is reduced.

The method solves the problem that the wireless coverage of all types of breakpoint areas cannot be solved in the prior art, avoids the phenomenon of continuous packet loss in the signal transmission process, and greatly improves the signal transmission efficiency.

Drawings

FIG. 1 is a schematic cross-sectional view of a rectangular waveguide;

FIG. 2 is a schematic view of a waveguide segment;

201 a signal source;

202 a coaxial converter;

203 match the load.

FIG. 3 is a schematic representation of a waveguide break point adjacent the beginning of the next waveguide segment and the end of the previous waveguide segment;

301 the signal source of a previous waveguide segment;

302 a coaxial transformer of a waveguide section;

303 the matched loading of a waveguide section;

304 signal source of the next waveguide segment;

305 coaxial transducer of the next waveguide section;

306 the matching load of the next waveguide section.

FIG. 4 is a schematic representation of a waveguide break point adjacent the end of the next waveguide segment and the end of the previous waveguide segment;

401 a signal source of a last waveguide segment;

402 a coaxial transducer of a waveguide segment;

403 matched loading of a waveguide segment;

404 the signal source of the next waveguide segment;

405 matching load of the next waveguide section;

406 coaxial transformer of the next waveguide section.

FIG. 5 is a schematic representation of a waveguide break point adjacent the beginning of the next waveguide segment and the beginning of the previous waveguide segment;

501 signal source of a waveguide section;

502 matched loading of a waveguide segment;

503 a coaxial transformer of a waveguide section;

504 the signal source of the next waveguide segment;

505 a coaxial transducer of a next waveguide section;

506 for the next waveguide section.

FIG. 6 is a schematic illustration of a break point condition in the middle of a waveguide segment;

601, a signal source;

602 a coaxial converter;

603 a coaxial converter;

604 a coaxial converter;

605 matching the load;

606 radio frequency cable.

FIG. 7 is a schematic diagram of a prior art method for eliminating a dead zone of a break point signal in the middle of a waveguide segment;

701, a signal source;

702 a coaxial converter;

703 a double-ended coaxial converter;

704 a coaxial converter;

705 matching the load;

706 an omni-directional antenna;

707 radio frequency cable.

Fig. 8 is a schematic diagram of a coaxial converter capable of transmitting wireless signals according to an embodiment of the present invention;

a 801 oscillator;

an 802 flange;

803 a waveguide cavity;

804 a wave-transmitting plate;

805 wave-transparent end faces.

FIG. 9 is a schematic diagram of a signal dead zone for eliminating a break point in the middle of a waveguide section by using a wave-transparent coaxial converter;

901 a signal source;

902 a coaxial converter;

903 wave-transparent coaxial converter;

904 a coaxial converter;

905 matching load;

906 radio frequency cable.

Fig. 10 is a schematic diagram of a matched load capable of transmitting wireless signals according to an embodiment of the present invention;

1001 wave-absorbing material;

1002, a flange plate;

1003 waveguide cavity;

1004 a wave-transmitting plate;

1005 wave-transparent end face.

FIG. 11 is a schematic diagram of a half-open chip capable of transmitting wireless signals according to an embodiment of the present invention;

1101 a flange plate;

a 1102 transmissive plate;

1103 wave-transparent end face.

FIG. 12 is a schematic diagram of eliminating signal blind areas adjacent to the end of a previous waveguide segment and the beginning of a next waveguide segment using wave-transparent matched loading;

1201 a signal source for a last waveguide section;

1202 the coaxial transformer of the previous waveguide segment;

1203 wave-transparent matched load of a last waveguide section;

1204 a signal source for a next waveguide segment;

1205 a coaxial transformer for the next waveguide segment;

1206 matching load of the next waveguide section.

FIG. 13 is a schematic diagram of a wave-transparent coaxial converter used to eliminate signal blind areas where the end of the previous waveguide segment is adjacent to the beginning of the next waveguide segment;

1301 a signal source of a waveguide section;

1302 a coaxial transducer of a waveguide segment;

1303 match load of a waveguide segment;

1304 a signal source for a next waveguide segment;

1305 a wave-transparent coaxial converter of a next waveguide section;

1306 for the next waveguide section.

FIG. 14 is a schematic diagram of a wave-transparent semi-open plate used to eliminate signal blind areas where the end of a previous waveguide segment is adjacent to the beginning of a next waveguide segment;

1401 from the previous waveguide segment;

1402 a coaxial transducer of a previous waveguide segment;

1403 a wave-transparent half-open sheet of the last waveguide section;

1404 source of the next waveguide section;

1405 coaxial transformer of the next waveguide section;

1405 matched loading of the next waveguide section.

FIG. 15 is a schematic illustration of the use of wave-transparent matched loading to eliminate signal blinding regions at the end of a previous waveguide segment adjacent to the end of a next waveguide segment;

1501 a source of a waveguide segment;

1502 a coaxial transducer of a last waveguide segment;

1503 of a waveguide section;

1504 signal source of the next waveguide segment;

1505 matching load of the next waveguide segment;

1506 of the next waveguide segment.

FIG. 16 is a schematic illustration of the use of a wave-transparent semi-open plate to eliminate signal blind areas where the end of a previous waveguide segment is adjacent to the end of a next waveguide segment;

1601 a signal source of a previous waveguide segment;

1602 a coaxial transformer for the last waveguide segment;

1603, a wave-transparent half-open piece of a waveguide tube section;

1604 the signal source for the next waveguide segment;

1605 matched loading of the next waveguide segment;

1606 coaxial transducer of the next waveguide section.

FIG. 17 is a schematic diagram of a wave-transparent coaxial converter used to eliminate signal dead zones adjacent to the beginning of a previous waveguide segment and the beginning of a next waveguide segment;

1701 the signal source of the last waveguide section;

1702 matching load of a last waveguide segment;

1703 a wave-transparent coaxial converter of a waveguide section;

1704 signal source for next waveguide segment;

1705 a coaxial transducer of a next waveguide section;

1706 matched load of the next waveguide segment.

Detailed Description

In order to make the objects, contents, and advantages of the present invention clearer, the following detailed description of the embodiments of the present invention will be made in conjunction with the accompanying drawings and examples.

The method and apparatus of the present invention will be described first with reference to the accompanying drawings.

As shown in fig. 8, this is a coaxial converter capable of transmitting wireless signals according to an embodiment of the present invention, and includes a flange 802, a vibrator 801, a waveguide cavity 803, and a wave-transparent end face 805;

the flange plate 802 is nested at one end of the waveguide cavity 803 and is connected with the waveguide tube and the wave-transparent coaxial converter;

the vibrator 801 is arranged in the waveguide cavity 803, and converts an electric signal into an electromagnetic wave to be transmitted in the waveguide;

the waveguide cavity 803 is used for transmitting electromagnetic wave signals with specific frequency;

the wave-transmitting end face 805 is perpendicular to the axial direction of the waveguide cavity, a wave-transmitting rate adjusting baffle 804 is additionally arranged, and the wave-transmitting rate adjusting baffle 804 is a wave-transmitting plate with wave-transmitting capacity.

As shown in fig. 10, the matching load capable of transmitting wireless signals according to the embodiment of the present invention includes a flange 1002, a wave-absorbing material 1001, a waveguide cavity 1003, and a wave-transmitting end surface 1005;

the flange plate 1002 is nested at one end of the waveguide cavity 1003 and is connected with a waveguide tube and a wave-transparent matched load;

the wave-absorbing material 1001 is arranged in the waveguide cavity 1003 and used for absorbing echoes;

the waveguide cavity 1003 is used for transmitting electromagnetic wave signals with specific frequency;

the wave-transmitting end surface 1005 is perpendicular to the axial direction of the waveguide cavity, and is additionally provided with a wave-transmitting rate adjusting baffle 1004, and the wave-transmitting rate adjusting baffle 1004 is a wave-transmitting plate with wave-transmitting capacity.

As shown in fig. 11, this is a half-open chip capable of transmitting wireless signals according to an embodiment of the present invention, and includes a flange 1101, a wave-transparent end face 1103;

the flange 1101 is nested on the wave-transparent end face 1103 and is used for connecting the waveguide and the wave-transparent semi-open-circuit piece;

the wave-transmitting end face 1103 may be additionally provided with a wave-transmitting rate adjusting baffle 1102, and the wave-transmitting rate adjusting baffle 1102 is a wave-transmitting plate having wave-transmitting capacity.

The following describes a method for realizing seamless coverage of waveguide signals by respectively using a wave-transparent coaxial converter, a wave-transparent matching load and a wave-transparent semi-open-circuit piece.

The method comprises the following steps: seamless coverage of waveguide signals by wave-transparent coaxial converter

The specific implementation steps are as follows:

step 1, installing a wave-transparent coaxial converter at the beginning end of a waveguide section

Step 2, adjusting the wave transmission rate of the wave-transmitting coaxial converter

Wave-transparent rate of wave-transparent coaxial converter is E_cThe wave-transmitting end face has a wave-transmitting rate of E₀The wave-transmitting rate of the added wave-transmitting plate is E_tThen, the following relationship is given:

E_c＝E₀×E_t

step 3, adjusting the wireless coverage strength of the breakpoint region where the wave-transparent coaxial converter is located

The wave-transmitting rate of the wave-transmitting coaxial converter is adjusted by selecting wave-transmitting sheets with different wave-transmitting coefficients, so that the wireless coverage intensity of a breakpoint area where the wave-transmitting coaxial converter is located is adjusted, and a waveguide tube transmission breakpoint signal blind area is eliminated.

The second method comprises the following steps: seamless coverage of waveguide signals by adopting wave-transparent matched load

The specific implementation steps are as follows:

step 1, installing wave-transparent matching load at the tail end of a waveguide tube section

Step 2, adjusting the wave transmission rate of the wave transmission matching load

The wave-transparent rate of the wave-transparent matched load is E_eThe wave-transmitting end face has a wave-transmitting rate of E₀The wave-transmitting rate of the added wave-transmitting plate is E_tThen, the following relationship is given:

E_e＝E₀×E_t

step 3, adjusting the wireless coverage strength of the breakpoint region where the wave-transparent matched load is located

The wave-transmitting rate of the wave-transmitting matched load is adjusted by selecting wave-transmitting sheets with different wave-transmitting coefficients, so that the wireless coverage intensity of a breakpoint area where the wave-transmitting matched load is located is adjusted, and a waveguide tube transmission breakpoint signal blind area is eliminated.

The third method comprises the following steps: seamless coverage of waveguide signals by adopting wave-transparent semi-open-circuit piece

The specific implementation steps are as follows:

step 1, installing a wave-transparent semi-open-circuit piece at the tail end of a waveguide tube section

Step 2, adjusting the wave transmission rate of the wave-transmitting semi-open-circuit sheet

The wave-transparent half-open-circuit sheet has a wave-transparent rate of E_eThe wave-transmitting end face has a wave-transmitting rate of E₀The wave-transmitting rate of the added wave-transmitting plate is E_tThen, the following relationship is given:

E_e＝E₀×E_t

step 3, adjusting the wireless coverage strength of the breakpoint region where the wave-transparent semi-open sheet is located

The wave-transmitting rate of the wave-transmitting semi-open plate is adjusted by selecting wave-transmitting plates with different wave-transmitting coefficients, so that the wireless coverage intensity of a breakpoint area where the wave-transmitting semi-open plate is located is adjusted, and a signal blind area of a transmission breakpoint of a waveguide tube is eliminated.

The present invention is described in detail with reference to the following embodiments, which are only used to clearly illustrate the technical solutions of the present invention, but not to limit the scope of the present invention.

Example 1

As shown in fig. 12, 13, and 14, in this embodiment, when the breakpoint is located in an area where the tail end of the previous waveguide segment is adjacent to the start end of the next waveguide segment, in order to eliminate the dead zone of the breakpoint signal transmitted by the waveguide and achieve seamless coverage of the waveguide signal, the following methods may be adopted:

the method comprises the following steps: and eliminating a signal blind area by adopting a wave-transparent matching load at the tail end of the last waveguide tube section.

The second method comprises the following steps: and eliminating a signal blind area at the starting end of the next waveguide section by adopting a wave-transparent coaxial converter.

The third method comprises the following steps: and the tail end of the last waveguide tube section adopts a wave-transparent semi-open chip to eliminate a signal blind area.

Example 2

As shown in fig. 15 and 16, in this embodiment, when the breakpoint is located in the adjacent region between the end of the previous waveguide segment and the end of the next waveguide segment, in order to eliminate the dead zone of the breakpoint signal transmitted by the waveguide and achieve seamless coverage of the waveguide signal, the following methods may be adopted:

The second method comprises the following steps: and the tail end of the last waveguide tube section adopts a wave-transparent semi-open chip to eliminate a signal blind area.

Example 3

As shown in fig. 17, in this embodiment, when the breakpoint is located in the adjacent region between the start end of the previous waveguide segment and the start end of the next waveguide segment, in order to eliminate the waveguide transmission breakpoint signal blind area and achieve seamless coverage of the waveguide signal, a method of installing a wave-transparent coaxial converter at the start end of the next waveguide segment may be used to eliminate the signal blind area.

Example 4

As shown in fig. 9, in this embodiment, to specifically describe that the breakpoint is located in the middle region of one waveguide segment, in order to eliminate the waveguide transmission breakpoint signal dead zone and achieve seamless coverage of the waveguide signal, a method of installing a wave-transparent coaxial converter at one end of the breakpoint region may be used to eliminate the signal dead zone.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, several modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. A method for achieving seamless coverage of a waveguide signal, the method comprising the steps of:

step 2, adjusting the wireless signal intensity of the coverage breakpoint area by changing the wave transmission rate of the wave transmission device;

wherein, the step 1 is one of the following four conditions:

situation one,

If the break point is in the region where the end of the previous waveguide segment is adjacent to the beginning of the next waveguide segment, one of three methods is used:

the tail end of the last waveguide tube section adopts a wave-transparent matching load as a wave-transparent device; or,

adopting a wave-transparent coaxial converter as a wave-transparent device at the starting end of the next waveguide section; or,

the tail end of the last waveguide tube section adopts a wave-transparent semi-open sheet as a wave-transparent device;

the second case,

If the break point is in the region of the end of the previous waveguide segment adjacent to the end of the next waveguide segment, one of two methods are used:

case three,

If the breakpoint is in a region where the beginning of the previous waveguide section is adjacent to the beginning of the next waveguide section, the following method is adopted:

installing a wave-transparent coaxial converter at the starting end of the next waveguide section as a wave-transparent device;

the fourth case,

If the break point is in the middle region of a waveguide section, the following method is adopted:

and a wave-transparent coaxial converter is arranged at one end of the breakpoint region to serve as a wave-transparent device.

2. A method for realizing seamless coverage of a waveguide signal as claimed in claim 1, wherein, when the wave-transparent device is a wave-transparent coaxial converter disposed at the beginning of the waveguide section, an end surface of the wave-transparent coaxial converter perpendicular to the axial direction of the waveguide can transmit the wireless signal.

3. A method for achieving seamless coverage of a waveguide signal as claimed in claim 1, wherein when said wave-transparent device is a wave-transparent matching load disposed at an end of the waveguide section, an end surface of said wave-transparent matching load perpendicular to an axial direction of the waveguide can transmit the radio signal.

4. The method for realizing seamless coverage of a waveguide signal according to claim 1, wherein when the wave-transparent device is a wave-transparent semi-open plate disposed at an end of the waveguide section, an end surface of the wave-transparent semi-open plate perpendicular to an axial direction of the waveguide can transmit the wireless signal.

5. A method for realizing seamless coverage of a waveguide signal according to any one of claims 2 to 4, wherein wave-transparent sheets with different wave-transparent rates are additionally arranged on the end face, and the wave-transparent rate of the wave-transparent device is changed by selecting the wave-transparent sheets with different wave-transparent rates.

6. A device for realizing seamless coverage of waveguide signals is characterized by comprising a flange plate and a wave-transparent end face;

the flange plate is welded on one end face perpendicular to the axial direction of the waveguide tube and is connected with the waveguide tube and the wave-transmitting device;

the wave-transmitting end face is perpendicular to the axial direction of the waveguide tube, and a wave-transmitting rate adjusting baffle is additionally arranged and is a wave-transmitting plate with wave-transmitting capacity;

the wave-transparent device is one of the following four conditions:

situation one,

If the break point is in the region where the end of the previous waveguide segment is adjacent to the beginning of the next waveguide segment, one of the following three installation methods is used:

the tail end of the last waveguide tube section is provided with a wave-transparent matching load as a wave-transparent device; or,

installing a wave-transparent coaxial converter at the starting end of the next waveguide section as a wave-transparent device; or,

a wave-transmitting semi-open-circuit piece is arranged at the tail end of the last waveguide tube section to serve as a wave-transmitting device;

the second case,

If the break point is in the region where the end of the previous waveguide segment is adjacent to the end of the next waveguide segment, one of two installation methods is used:

case three,

If the breakpoint is in a region where the beginning of the previous waveguide section is adjacent to the beginning of the next waveguide section, the following installation method is adopted:

the fourth case,

If the break point is in the middle region of a waveguide section, the following installation method is adopted:

7. The apparatus for realizing seamless coverage of waveguide signals according to claim 6, wherein when the wave-transparent apparatus is a wave-transparent coaxial converter, the wave-transparent coaxial converter further comprises a vibrator and a waveguide cavity;

8. the apparatus for implementing seamless coverage of waveguide signals according to claim 6, wherein when the wave-transparent apparatus is a wave-transparent matched load, the wave-transparent matched load further comprises a wave-absorbing material and a waveguide cavity;

the waveguide cavity is used for transmitting electromagnetic wave signals with specific frequency.

9. An apparatus for achieving seamless coverage of a waveguide signal as in claim 6 wherein, when said wave-transparent device is a wave-transparent semi-open plate, said wave-transparent semi-open plate comprises a flange and a wave-transparent end face.