WO2018188294A1 - Dispositif de transmission de signal basé sur une structure de couplage et à charge ouverte correspondant à un double adaptateur - Google Patents

Dispositif de transmission de signal basé sur une structure de couplage et à charge ouverte correspondant à un double adaptateur Download PDF

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Publication number
WO2018188294A1
WO2018188294A1 PCT/CN2017/106226 CN2017106226W WO2018188294A1 WO 2018188294 A1 WO2018188294 A1 WO 2018188294A1 CN 2017106226 W CN2017106226 W CN 2017106226W WO 2018188294 A1 WO2018188294 A1 WO 2018188294A1
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WO
WIPO (PCT)
Prior art keywords
microstrip line
coupling structure
double
signal transmitting
signal
Prior art date
Application number
PCT/CN2017/106226
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English (en)
Chinese (zh)
Inventor
曲美君
邓力
李书芳
张贯京
葛新科
高伟明
张红治
Original Assignee
深圳市景程信息科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Application filed by 深圳市景程信息科技有限公司 filed Critical 深圳市景程信息科技有限公司
Publication of WO2018188294A1 publication Critical patent/WO2018188294A1/fr

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
    • H01P1/00—Auxiliary devices
    • H01P1/20—Frequency-selective devices, e.g. filters
    • H01P1/201—Filters for transverse electromagnetic waves
    • H01P1/203—Strip line filters
    • 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
    • H04B1/02—Transmitters
    • H04B1/04—Circuits

Definitions

  • Signal transmitting device based on double-branch section matching open-circuit load and coupling structure
  • the present invention relates to the field of microwave communication technologies, and in particular, to a signal transmitting device based on a double-branch joint matching circuit load and a coupling structure.
  • a signal transmitting device transmits a signal
  • the filter acts as a very important component of the RF front-end, which filters out out-of-band noise and improves the sensitivity of the circuitry.
  • a microstrip filter is a device used to separate microwave signals of different frequencies. Its main function is to suppress unwanted signals so that they cannot pass through the filter and only pass the desired signal. In microwave circuit systems, the performance of the filter has a large impact on the performance of the circuit system.
  • the out-of-band rejection performance of the filter is an important influence indicator, and the out-of-band rejection performance of the existing filter is poor, which affects the performance of the entire communication system. Therefore, there is a need for a signal transmitting device having high broadband out-of-band rejection.
  • the object of the present invention is to provide a signal transmitting device based on a double-branch joint matching load and coupling structure, which aims to solve the technical problem of poor broadband out-of-band rejection performance of the signal transmitting device in the prior art.
  • the present invention provides a signal transmitting apparatus based on a double-branch section matching loop load and a coupling structure, the signal transmitting apparatus including a filter, a voltage controlled oscillator, an amplifier, and a transmitting antenna.
  • An output of the voltage controlled oscillator is coupled to an input of the amplifier, the filter comprising two signal transmission ends disposed on a surface of the dielectric plate, an output end of the amplifier and a signal transmission end of the filter Connecting, another output of the filter is connected to the transmitting antenna, wherein
  • the filter further includes two first microstrip lines, two second microstrip lines, and two disposed on the surface of the dielectric board a third microstrip line, two fourth microstrip lines, two fifth microstrip lines, a sixth microstrip line, and two signal transmission ends; the double branch-based matching circuit load and coupling structure
  • the signal transmitting device is bilaterally symmetrical about a central axis, wherein the central axis is a line connecting the midpoints of the upper and lower horizontal frames of the signal transmitting device, one end of each of the first microstrip lines and a second microstrip line One end is connected to form a double-branched matching circuit load, and the other end of each second microstrip line is vertically connected to a signal output end and a third microstrip line, and each fourth microstrip line is parallelly arranged in one An upper position of the third microstrip line and a coupling structure, one end of each fourth microstrip line is connected to one end of a fifth microstrip line, and the two ends of
  • the two first microstrip lines and the two second microstrip lines are parallel to the left and right vertical borders of the signal transmitting device.
  • the two third microstrip lines, the two fourth microstrip lines, the two fifth microstrip lines, one sixth microstrip line, and two signal transmission ends are connected to the signal
  • the upper and lower lateral frames of the launching device are parallel.
  • the signal transmitting device based on the double-branch node matching circuit load and the coupling structure comprises two double-branch joint matching circuit loads and two coupling structures.
  • the two signal transmission ends are used for inputting and outputting signals, wherein one signal transmission end serves as a signal input end, and the other signal transmission end serves as a signal output end.
  • the first microstrip line, the second microstrip line, the third microstrip line, the fourth microstrip line, the fifth microstrip line, the sixth microstrip line, and the signal transmission end are all strips Metal copper sheet with a structure.
  • each first microstrip line has an impedance of 34 ⁇
  • each second microstrip line has an impedance of 68 ⁇
  • each fifth microstrip line has an impedance of 78 ⁇
  • each of the sixth microstrip lines The impedance is 83 ⁇
  • the odd mode impedance of each coupling structure 22 is 60 ⁇
  • the even mode impedance of each coupling structure 22 is 180 ⁇
  • the electrical length of each coupling structure 22 It It is 90 degrees.
  • the signal transmitting device based on the dual-branch matching circuit load and the coupling structure is further provided with a power supply, a voltage regulating module and a voltage stabilizing module, the voltage regulating module, the voltage stabilizing module and the voltage controlled oscillator.
  • the power source is electrically connected to the voltage regulating module and the voltage stabilizing module.
  • the signal transmitting device based on the double-branch node matching circuit load and the coupling structure is further provided with a power source, a second voltage regulating module and a second voltage stabilizing module, and the second voltage regulating module and the second voltage regulating module The voltage stabilizing module and the amplifier are connected, and the power source is electrically connected to the second voltage regulating module and the second voltage stabilizing module.
  • the signal transmitting device based on the double-branched matching circuit load and the coupling structure of the present invention can be realized by designing two double-branch joint matching load and two coupling structures.
  • the broadband out-of-band rejection characteristic is formed in the working frequency band, so that the original microstrip line has filtering performance, can have a good suppression effect on the out-of-band signal, has high selectivity to the passband signal, introduces less noise, and avoids causing the RF front end. interference.
  • FIG. 1 is a schematic view showing the structure of a signal transmitting device based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • FIG. 2 is a schematic structural view of a preferred embodiment of a voltage controlled oscillator in a signal transmitting device based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • FIG. 3 is a schematic structural view of a preferred embodiment of an amplifier in a signal transmitting device based on a double-branched matching circuit load and coupling structure according to the present invention.
  • FIG. 4 is a schematic structural view of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • FIG. 5 is a schematic diagram showing the dimensions of various components of a preferred embodiment of a filter in a signal transmitting device based on a double-branched matching circuit load and coupling structure of the present invention.
  • FIG. 6 is a circuit schematic diagram of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • FIG. 7 is a schematic diagram of S-parameter results simulated by the electromagnetic simulation software of the signal transmitting device based on the double-branch joint matching circuit load and the coupling structure.
  • FIG. 1 is a schematic structural view of a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • the signal transmitting apparatus 1 based on the double-branch section matching circuit load and coupling structure of the present invention comprises a filter 10, a voltage controlled oscillator 20, an amplifier 30 and a transmitting antenna 40, and the voltage controlled oscillator An output of 20 is coupled to an input of said amplifier 30, an output of said amplifier 30 is coupled to an input of said filter 10, and an output of said filter 10 is coupled to an input of said transmit antenna.
  • the signal transmitting device 1 based on the double-branch node matching circuit load and coupling structure is used to generate a signal (for example, a communication signal) and is transmitted to the air through the transmitting antenna 40.
  • the transmitting antenna 40 is an Yagi transmitting antenna, and the transmitting antenna 40 has a transmitting frequency of between 340 and 570 MHz.
  • FIG. 2 is a schematic structural view of a preferred embodiment of a voltage controlled oscillator in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • the signal transmitting device 1 based on the double-branched matching circuit load and coupling structure further includes a power source 204, a first voltage regulating module 202, and a first voltage stabilizing module 203.
  • the first voltage regulation module 202 is connected to the first voltage stabilization module 203 and the voltage controlled oscillator 20 .
  • the power source 204 is electrically connected to the first voltage regulating module 202 and the first voltage stabilizing module 203.
  • the power source 204 is used to provide power to the voltage controlled oscillator 20.
  • the first voltage adjustment module 202 is configured to control the voltage controlled oscillator 20 to generate signals of different frequencies by voltage regulation.
  • the first voltage stabilizing module 203 is configured to adjust and regulate the voltage of the power source 204 to prevent voltage fluctuations of the power source 204 from affecting the first voltage regulating module 202.
  • the first voltage adjustment module 202 can be, but is not limited to, a potentiometer or a sliding varistor.
  • the first voltage stabilizing module 203 is a voltage regulator. It should be noted that the connecting wire between the power source 204 and the voltage controlled oscillator 20 in FIG. 2 does not form a cross path with the connecting wire between the first voltage regulating module 202 and the first voltage stabilizing module 203, but only It is convenient for the display of Fig. 2. In other embodiments, the first voltage regulation module 202 and the first voltage regulation module 203 can be To omit. It should be noted that the voltage controlled oscillator 20 is prior art and will not be described herein.
  • FIG. 3 is a schematic structural view of a preferred embodiment of an amplifier in a signal transmitting apparatus based on a double-branched matching circuit load and a coupling structure according to the present invention.
  • the signal transmitting device 1 based on the double-branched matching circuit load and coupling structure further includes a second voltage regulating module 302 and a second voltage stabilizing module 303.
  • the second voltage regulating module 302 is connected to the second voltage stabilizing module 303 and the amplifier 30.
  • the power source 204 is electrically connected to the second voltage regulating module 302 and the second voltage stabilizing module 303.
  • the power source 204 is used to provide power to the amplifier 30.
  • the second voltage regulation module 302 is configured to control the amplifier 30 to generate signals of different frequencies by voltage regulation.
  • the second voltage stabilizing module 303 is configured to adjust and regulate the voltage of the power source 204 to prevent voltage fluctuations of the power source 204 from affecting the second voltage regulating module 302.
  • the second voltage adjustment module 302 can be, but is not limited to, a potentiometer or a slip varistor.
  • the second voltage stabilizing module 303 is a voltage regulator. It should be noted that the connecting wire between the power source 204 and the amplifier 30 in FIG. 3 does not form a cross path with the connecting wire between the second voltage regulating module 302 and the second voltage stabilizing module 303, but only for FIG. The display is convenient. In other embodiments, the second voltage regulation module 302 and the second voltage regulation module 303 may be omitted. It should be noted that the amplifier 30 (for example, an integrated operational amplifier) is prior art and will not be described herein.
  • the signal transmitting device 1 generates a signal through the voltage controlled oscillator 20, and amplifies the RF power of the signal through the amplifier 30, for example, amplifies the power signal of 6 dBm to an adjustable power.
  • the signal (maximum 60 W) is filtered by the filter 10 and then transmitted through the transmitting antenna 40 into the air.
  • FIG. 4 is a schematic structural view of a preferred embodiment of a filter in a signal transmitting apparatus based on a double-branch section matching load and coupling structure according to the present invention
  • FIG. 5 is a double-branch section based on the present invention
  • FIG. 6 is a schematic diagram of a filter in a signal transmitting apparatus based on a double-branch section matching circuit load and coupling structure according to the present invention
  • FIG. Circuit schematic is
  • the filter 10 includes two first microstrip lines 101, two second microstrip lines 102, two third microstrip lines 103, and two disposed on the surface of the dielectric board 1.
  • the filter 10 is bilaterally symmetrical about a central axis, and the central axis is the upper and lower sides of the filter 10 a line connecting the midpoints of the horizontal borders (ie, the line ab in FIG. 1), the two first microstrip lines 101 and the two second microstrip lines 102 are both vertically aligned with the left and right sides of the filter 10.
  • the straight borders are parallel, and the two third microstrip lines 103, the two fourth microstrip lines 104, the two fifth microstrip lines 105, one sixth microstrip line 106, and the two signal transmission ends P are both The upper and lower horizontal borders of the filter 10 are parallel.
  • the central axis is not a metal component in the filter 10, but is convenient for the user to design the component on the filter 10 (for example, two firsts) for production or design.
  • the two signal transmission ends P) are bilaterally symmetrical about the central axis.
  • the central axis does not participate in any operation such as signal filtering.
  • the central axis is for the convenience of describing the left and right symmetrical structure of the filter 10.
  • the output of the amplifier 30 is connected to a signal transmission terminal P on the filter 10, and the other signal transmission terminal P on the filter 10 is connected to the transmitting antenna 40.
  • each of the first microstrip lines 101 is connected to one end of a second microstrip line 102 and forms a double-branched matching circuit load 20, and the other end of each second microstrip line 102 and one
  • the signal output terminal P and a third microstrip line 103 are vertically connected, and each of the fourth microstrip lines 104 is disposed in parallel above a third microstrip line 103 and forms a coupling structure, and each fourth microstrip One end of the line 104 is connected to one end of a fifth microstrip line 105, and both ends of the sixth microstrip line 106 are respectively connected to the other end of a fifth microstrip line 105.
  • the dielectric plate 1 is a PCB board, and the specific plate type is Roger RO4350B, wherein the relative dielectric constant is 3.66, and the plate thickness is 0.762 mm.
  • the signal transmission end P is a metal copper piece of a strip structure.
  • the signal transmitting device based on the double-branch joint matching circuit load and the coupling structure of the present invention can make the filter 10 of the present invention work by changing the length and width of the microstrip line with respect to the existing band pass filter. A good match is achieved in the band.
  • the operating frequency band of the filter 10 is in the range of 1.88 GHz to 4.12 GHz, and the first microstrip line 101 and the second microstrip line disposed on the surface of the dielectric board 1 are illustrated by specific embodiments. 102.
  • the thickness of the metal copper plate disposed on the PCB board is generally um, so the present invention does not apply to the first microstrip line 101, the second microstrip line 102, and the third microstrip line 103,
  • the thickness of the metal copper piece of the length and width of the fourth microstrip line 104, the fifth microstrip line 105, the sixth microstrip line 106, and the signal transmission end P is limited, and does not affect the double-branched matching according to the present invention. Characteristics of signal transmitters for road loads and coupling structures.
  • two signal transmission terminals P are used for signal input and output, wherein one signal transmission terminal P serves as a signal input terminal, and the other signal transmission terminal P serves as a signal output terminal.
  • the signal input end may be the signal transmission end P on the left side in FIG. 4 or the signal transmission end P on the right side; the signal output end may be the signal transmission end P on the left side in FIG. 4, or may be the signal transmission on the right side. End P.
  • the signal transmission terminal P on the left side of FIG. 4 serves as a signal input terminal
  • the signal transmission terminal P on the right side of the shell cap 4 serves as a signal output terminal, and the signal enters from the signal transmission terminal P on the left side, and is output from the signal transmission terminal P on the right side.
  • the signal transmission terminal P on the left side of Fig. 4 is used as the signal output terminal
  • the signal transmission terminal P on the right side of Fig. 4 serves as a signal input terminal, and the signal enters from the signal transmission terminal P on the right side, and is output from the signal transmission terminal P on the left side.
  • a first microstrip line 101 and a second microstrip line 102 form a double-branched matching circuit load 20, a third microstrip line 103 and a The fourth microstrip line 104 forms a coupling structure 22.
  • the filter 10 includes two double-branch junction-carrying loads 20 and two coupling structures 22.
  • the impedance of each of the first microstrip lines 101 is 34 ohms ( ⁇ )
  • the impedance of each of the second microstrip lines 102 is 68 ohms ( ⁇ )
  • each of the fifth microstrips has an impedance of 78 ohms ( ⁇ )
  • each The impedance of the six microstrip line 106 is 83 ohms ( ⁇ )
  • the odd mode impedance of each coupling structure 22 is 60 ohms ( ⁇ )
  • the even mode impedance of each coupling structure 22 is 180 ohms ( ⁇ )
  • each coupling structure The electrical length of 22 is 90 degrees.
  • the signal transmitting device based on the double-branched matching circuit load and the coupling structure according to the present invention can be formed in a specific working frequency band by designing two double-branched matching circuit load 20 and two coupling structures 22
  • the broadband out-of-band rejection feature makes the original microstrip line have filtering performance, which can have a good suppression effect on the out-of-band signal, high selectivity to the passband signal, introduce less noise, and avoid interference to the RF front end.
  • FIG. 7 is a schematic diagram of S-parameter results simulated by the electromagnetic simulation software of the signal transmitting device based on the double-branched matching circuit load and the coupling structure of the present invention.
  • the filter 10 has a relative bandwidth of 74.67% between 1.88 GHz and 4.12 GHz in the operating frequency band.
  • IS11 beeps less than -10 dB
  • 18121 is less than -10 (18, as can be seen from Figure 7, the filtering
  • the device 10 has a broadband out-of-band rejection characteristic. It can be seen that the signal transmitting device based on the double-branch-matching circuit load and the coupling structure of the present invention can have a good suppression effect on the out-of-band signal and a high selectivity to the passband signal. , introducing less noise to avoid interference with the RF front end.
  • the signal transmitting device based on the double-branch joint matching circuit load and the coupling structure of the present invention can be realized by designing two double-branch joint matching load and two coupling structures.
  • the broadband out-of-band rejection characteristic is formed in the working frequency band, so that the original microstrip line has filtering performance, can have a good suppression effect on the out-of-band signal, has high selectivity to the passband signal, introduces less noise, and avoids causing the RF front end. interference.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Microwave Amplifiers (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)

Abstract

La présente invention concerne un dispositif de transmission de signal basé sur une structure de couplage et de charge ouverte correspondant à un double adaptateur. Le dispositif de transmission de signal comprend un filtre, un oscillateur commandé en tension, un amplificateur et une antenne de transmission. Une extrémité de sortie de l'oscillateur commandé en tension est connectée à une extrémité d'entrée de l'amplificateur. Le filtre comprend deux extrémités de transmission de signal disposées sur une surface d'une plaque diélectrique. Une extrémité de sortie de l'amplificateur est connectée à l'une des extrémités de transmission de signal du filtre. Le dispositif de transmission de signal fourni par la présente invention peut réaliser une fonction de rejet hors bande à large bande dans une bande de fréquence de travail spécifique, permettre à des lignes microruban d'origine d'avoir une fonction de filtrage et de fournir un bon effet de suppression sur des signaux hors bande.
PCT/CN2017/106226 2017-04-15 2017-10-14 Dispositif de transmission de signal basé sur une structure de couplage et à charge ouverte correspondant à un double adaptateur WO2018188294A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201720394191.3 2017-04-15
CN201720394191.3U CN206673944U (zh) 2017-04-15 2017-04-15 基于双枝节匹配开路负载及耦合结构的信号发射装置

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WO2018188294A1 true WO2018188294A1 (fr) 2018-10-18

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Citations (6)

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Publication number Priority date Publication date Assignee Title
CN103035986A (zh) * 2012-12-15 2013-04-10 华南理工大学 基于双枝节加载谐振器的超宽带滤波器
CN203166046U (zh) * 2012-12-15 2013-08-28 华南理工大学 基于双枝节加载谐振器的超宽带滤波器
CN104282970A (zh) * 2013-07-12 2015-01-14 中兴通讯股份有限公司 一种dbr滤波器及dbr双工器
US20160294029A1 (en) * 2010-05-17 2016-10-06 Resonant Inc. Mixed resonator monolithic band-pass filter with enhanced rejection
CN107196024A (zh) * 2017-04-15 2017-09-22 深圳市景程信息科技有限公司 具有宽带带外抑制的宽带带通滤波器
CN107196671A (zh) * 2017-04-15 2017-09-22 深圳市景程信息科技有限公司 具有宽带带外抑制的信号发射装置

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160294029A1 (en) * 2010-05-17 2016-10-06 Resonant Inc. Mixed resonator monolithic band-pass filter with enhanced rejection
CN103035986A (zh) * 2012-12-15 2013-04-10 华南理工大学 基于双枝节加载谐振器的超宽带滤波器
CN203166046U (zh) * 2012-12-15 2013-08-28 华南理工大学 基于双枝节加载谐振器的超宽带滤波器
CN104282970A (zh) * 2013-07-12 2015-01-14 中兴通讯股份有限公司 一种dbr滤波器及dbr双工器
CN107196024A (zh) * 2017-04-15 2017-09-22 深圳市景程信息科技有限公司 具有宽带带外抑制的宽带带通滤波器
CN107196671A (zh) * 2017-04-15 2017-09-22 深圳市景程信息科技有限公司 具有宽带带外抑制的信号发射装置

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