CN204103901U - Multiband millimetre-wave attenuator transmitter - Google Patents
Multiband millimetre-wave attenuator transmitter Download PDFInfo
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- CN204103901U CN204103901U CN201420333756.3U CN201420333756U CN204103901U CN 204103901 U CN204103901 U CN 204103901U CN 201420333756 U CN201420333756 U CN 201420333756U CN 204103901 U CN204103901 U CN 204103901U
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Abstract
The utility model discloses a kind of multiband millimetre-wave attenuator transmitter, comprise multiband millimetre-wave attenuator transmitter circuitry and metal shielding box; Transmitter circuitry is fixedly assembled in metal shielding box.Described multiband millimetre-wave attenuator transmitter comprises quadrupler, multiband band pass filter, the first driving amplifier, the first frequency mixer, the first band pass filter, the first power amplifier, the second frequency mixer, the second band pass filter, the second power amplifier, the second driving amplifier, three-mixer, the 3rd band pass filter, the 3rd power amplifier, the first antenna, the second antenna, third antenna.The utility model effectively raises the utilance of anticollision radar infrastructure and frequency spectrum, decrease the quantity of signal source and filter, and can carry out selecting and arranging in pairs or groups according to the difference of application band and transmitting range, improve selection flexibility and the utilance of frequency range.
Description
Technical field
The utility model relates to and utilizes the millimeter wave working frequency range of automobile collision avoidance radar to carry out nearly medium and long distance communication, particularly relates to a kind of multiband millimetre-wave attenuator transmitter.
Background technology
Along with the development of wireless communication technology, technology of Internet of things especially car networking technology and industry, real-time tracking can be carried out by mobile communication (GSM, 3G etc.), radio RF recognition technology (RFID), location technology (GPS) etc. to vehicle, between operation conditions supervision with vehicle, radio communication etc. between vehicle and various terminal.
Meanwhile, the fast development of wireless communication technology makes the frequency spectrum resource of ghz band consume fast, is not enough to support the speed wireless data transfer in car working application.Millimeter-wave frequency is widely used, as 24GHz, 60GHz and 77GHz frequency range etc. for automobile collision avoidance radar field in fields such as ultrahigh speed wireless transmission and safety owing to having wide spectrum, directionality and exempting from the advantages such as license.
Therefore, the millimeter wave frequency band of automobile collision avoidance radar work can be utilized to realize in-vehicle wireless communication, realize the multiplexing of infrastructure and frequency spectrum resource in automobile collision avoidance radar, and can by the Iarge-scale system network of application extension in car and car, Che Yulu, car and pedestrian, radio communication and information exchange between car and the Internet, realize intelligent transportation manage, integrated network that Intelligent Dynamic information service and Vehicular intelligentization control, thus realize radio communication, technology of Internet of things in the further application of field of transportation system.
Meanwhile, if the groundwork frequency range (24GHz, 60GHz, 77GHz) of automobile collision avoidance radar combined, a kind of multiband communication system can be realized, be made up of multiband communication transmitter and multiband communication control processor.This multiband communication system combines the advantage of three frequency ranges, possesses the feature of nearly medium and long distance communication.
Summary of the invention
The purpose of this utility model is to utilize the millimeter wave frequency band of automobile collision avoidance radar work to carry out nearly medium and long distance communication, and proposes a kind of multiband millimetre-wave attenuator transmitter.
The utility model is for solving the problems of the technologies described above adopted scheme:
A kind of multiband millimetre-wave attenuator transmitter, comprises multiband millimetre-wave attenuator transmitter circuitry and metal shielding box; The assembling of multiband millimetre-wave attenuator transmitter circuitry is fixed in metal shielding box;
Described multiband borne Millimeter Wave Collision Avoidance Radars transmitter circuitry comprises quadrupler, multiband band pass filter, the first driving amplifier, the first frequency mixer, the first band pass filter, the first power amplifier, the second frequency mixer, the second band pass filter, the second power amplifier, the second driving amplifier, three-mixer, the 3rd band pass filter, the 3rd power amplifier, the first antenna, the second antenna, third antenna.
Quadrupler connects a microwave signal source by microwave connector, output is connected with the input of multiband band pass filter, first frequency range output of multiband band pass filter is connected with the input of the first driving amplifier, the output of the first driving amplifier is connected with the local oscillation signal end of the first frequency mixer, the intermediate frequency port of the first frequency mixer connects the first intermediate-freuqncy signal source by microwave connector, the prevention at radio-frequency port of the first frequency mixer is connected with first band pass filter one end, the first band pass filter other end is connected with the input of the first power amplifier, the output of the first power amplifier connects the first antenna by the first millimeter-wave signal interface, second frequency range output of multiband band pass filter is connected with the local oscillation signal end of the second frequency mixer, the intermediate frequency port of the second frequency mixer connects the second intermediate-freuqncy signal source by microwave connector, the prevention at radio-frequency port of the second frequency mixer is connected with one end of the second band pass filter, the other end of the second band pass filter is connected with the input of the second power amplifier, and the output of the second power amplifier connects the second antenna by the second millimeter-wave signal interface, 3rd frequency range output of multiband band pass filter is connected with the input of the second driving amplifier, the output of the second driving amplifier is connected with the local oscillation signal end of three-mixer, the intermediate frequency port of three-mixer connects the 3rd intermediate-freuqncy signal source by microwave connector, the radio-frequency head of three-mixer is connected with one end of the 3rd band pass filter, the 3rd band pass filter other end is connected with the 3rd power amplifier, and the output of the 3rd power amplifier connects third antenna by the 3rd millimeter-wave signal interface.
Described frequency multiplier adopts quadruple monolithic integrated circuit, realizes the quadruple of signal source.
The first described band pass filter, the second band pass filter are identical with the 3rd bandpass filter structures, and it is the microstrip coupled structure of zigzag, comprise two 50 ohm microstrip, six roots of sensation parallel coupled line and five coupling line connecting lines;
Six roots of sensation parallel coupled line indentation arranges, and by the line serial connection that is of coupled connections, wherein first is connected with 50 ohm microstrip by transition line respectively with last root parallel coupled line.
The first described frequency mixer adopts fundamental mixer, for the first frequency band signals and the first intermediate-freuqncy signal are carried out first-harmonic uppermixing; Second frequency mixer and three-mixer adopt Subharmonic mixer, second frequency mixer is used for the second frequency band signals and the second intermediate-freuqncy signal to carry out second harmonic uppermixing, and three-mixer is used for the 3rd frequency band signals and the 3rd intermediate-freuqncy signal to carry out second harmonic uppermixing.
Described microwave connector adopts SMA connector; First millimeter-wave signal interface adopts 2.92mm coaxial connector or the micro-band-waveguide connector of WR28, second millimeter-wave signal interface adopts 1.85mm coaxial connector or the micro-band-waveguide connector of WR15, and the 3rd millimeter-wave signal interface adopts 1mm coaxial connector or the micro-band-waveguide connector of WR10.
Described metal shielding box is processed by brass.
The utility model contrast prior art has following innovative point:
1, multiband millimetre-wave attenuator transmitter of the present utility model make use of the working frequency range of automobile collision avoidance radar to realize vehicle-mounted nearly medium and long distance radio communication, effectively raises the utilance of anticollision radar infrastructure and frequency spectrum.
2, multiband millimetre-wave attenuator transmitter of the present utility model adopts signal source shared mode, effectively decreases the quantity of signal source and filter, thus the cost of manufacture of this millimetre-wave attenuator transmitter is significantly reduced.
3, the harmonic wave produced after quadruple can make full use of by multiband millimetre-wave attenuator transmitter of the present utility model.The communication transmitter of tradition frequency multiplication framework only utilizes the main frequency after frequency multiplication, i.e. a frequency, all the other unwanted harmonic waves of filtering.Frequency multiplication Hou tri-road signal is then carried out power amplification simultaneously and launches after carrying out mixing by the utility model, not only increase the utilance of frequency range, and three frequency band signals can be produced for communication simultaneously, also can carry out selecting and arranging in pairs or groups according to the difference of application band and transmitting range, improve selection flexibility and the utilance of frequency range.
4, multiband millimetre-wave radar transmitter of the present utility model adopts integrated development theory, is positioned in metal shielding box by multiband millimetre-wave attenuator transmitter circuitry, improves antijamming capability and the dust tightness of circuit.
Accompanying drawing explanation
Fig. 1 is the utility model multiband millimetre-wave attenuator transmitter circuitry block diagram;
Fig. 2 is the utility model toothed belt bandpass filter structure chart;
Embodiment
For making the purpose of this utility model, technical scheme and advantage more clear understand, below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
As shown in Figure 1, a kind of multiband millimetre-wave attenuator transmitter, relates generally to multiband millimetre-wave attenuator transmitter circuitry; The assembling of multiband millimetre-wave attenuator transmitter circuitry is fixed on metal shielding box.
Described multiband millimetre-wave attenuator transmitter circuitry comprises quadrupler 2, multiband band pass filter 3, first driving amplifier 4, first frequency mixer 5, first band pass filter 7, first power amplifier 8, second frequency mixer 10, second band pass filter 12, second power amplifier 13, second driving amplifier 15, three-mixer 16, the 3rd band pass filter 18, the 3rd power amplifier 19, first antenna 9, second antenna 14 and third antenna 20.
Quadrupler 2 connects the first signal source 1 by microwave connector, output is connected with the input of multiband band pass filter 3, first frequency range output of multiband band pass filter 3 is connected with the input of the first driving amplifier 4, the output of the first driving amplifier 4 is connected with the local oscillation signal end of the first frequency mixer 5, the intermediate frequency port of the first frequency mixer connects the first intermediate-freuqncy signal source 6 by microwave connector, the prevention at radio-frequency port of the first frequency mixer 5 is connected with first band pass filter 7 one end, first band pass filter 7 other end is connected with the input of the first power amplifier 8, the output of the first power amplifier 8 connects the first antenna 9 by the first millimeter-wave signal interface, second frequency range output of multiband band pass filter 3 is connected with the local oscillation signal end of the second frequency mixer 10, the intermediate frequency port of the second frequency mixer 10 connects the second intermediate-freuqncy signal source 11 by microwave connector, the prevention at radio-frequency port of the second frequency mixer is connected with one end of the second band pass filter 12, the other end of the second band pass filter 12 is connected with the input of the second power amplifier 13, and the output of the second power amplifier 13 connects the second antenna 14 by the second millimeter-wave signal interface, 3rd frequency range output of multiband band pass filter 3 is connected with the input of the second driving amplifier 15, the output of the second driving amplifier is connected with the local oscillation signal end of three-mixer 16, the intermediate frequency port of three-mixer 16 connects the 3rd intermediate-freuqncy signal source 17 by microwave connector, the radio-frequency head of three-mixer 16 is connected with one end of the 3rd band pass filter 18, the 3rd band pass filter other end is connected with the 3rd power amplifier 19, and the output of the 3rd power amplifier 19 connects third antenna 20 by the 3rd millimeter-wave signal interface,
As shown in Figure 2, the first described band pass filter is identical with the second bandpass filter structures, and it is the microstrip coupled structure of zigzag, comprises two 50 ohm microstrip, six roots of sensation parallel coupled line and five coupling line connecting lines;
Six roots of sensation parallel coupled line indentation arranges, and by the line serial connection that is of coupled connections, wherein first is connected with 50 ohm microstrip by transition line respectively with last root parallel coupled line;
Described frequency multiplier adopts quadruple monolithic integrated circuit, realizes the quadruple of signal source, solves existing local oscillation signals leak to antenna, i.e. the problem of radio-frequency transmissions end, put forward high-frequency stability with the frequency reducing required local oscillation signal.Again utilized after after frequency multiplication, each harmonic can be passed through filter and amplification.
The first described frequency mixer adopts fundamental mixer, for the first frequency band signals and the first intermediate-freuqncy signal are carried out first-harmonic uppermixing; Second frequency mixer and three-mixer adopt Subharmonic mixer, second frequency mixer is used for the second frequency band signals and the second intermediate-freuqncy signal to carry out second harmonic uppermixing, and three-mixer is used for the 3rd frequency band signals and the 3rd intermediate-freuqncy signal to carry out second harmonic uppermixing.
Described microwave connector adopts SMA connector; First millimeter-wave signal interface adopts 2.92mm coaxial connector or the micro-band-waveguide connector of WR28, second millimeter-wave signal interface adopts 1.85mm coaxial connector or the micro-band-waveguide connector of WR15, and the 3rd millimeter-wave signal interface adopts 1mm coaxial connector or the micro-band-waveguide connector of WR10; Power connection adopts feedthrough capacitor.
For 24GHz, 61GHz, 77GHz tri-frequency range millimetre-wave attenuator transmitter the utility model is described.
Signal source 1 adopts the sinusoidal signal of 7.6GHz, after frequency multiplier 2 quadruple, obtains each harmonic of 7.6GHz.Signal separator after quadruple is become the signal of three road different frequency ranges by multiband band pass filter 3, and frequency is 22.8GHz, 30.4GHz, 38GHz respectively, i.e. frequency tripling, quadruple, the fifth harmonic of 7.6GHz.Due to quadrupler produce signal in except four times of signals each harmonic output power all very little, so the first frequency band signals, namely 22.8GHz signal improves after signal power through the first driving amplifier 4 and carry out first-harmonic uppermixing with 1.2GHz first intermediate-freuqncy signal 6 in the first frequency mixer 5, the 24GHz signal produced is through centre frequency 24GHz, first band pass filter 7 filtering of bandwidth 2GHz, by first antenna 9 is launched after improving transmitting power finally by the first power amplifier 8; Second frequency band signals, namely 30.4GHz signal carries out second harmonic uppermixing with 200MHz second intermediate-freuqncy signal 11 in the second frequency mixer 10, produce 61GHz signal through centre frequency 61GHz, second band pass filter 12 filtering of bandwidth 2GHz, by second antenna 14 is launched after improving transmitting power finally by the second power amplifier 13; 3rd frequency band signals, namely 38GHz signal carries out second harmonic uppermixing with 1GHz the 3rd intermediate-freuqncy signal 17 after the second driving amplifier 15 amplifying signal in three-mixer 16, produce 77GHZ signal through centre frequency 77GHz, 3rd band pass filter 18 filtering of bandwidth 2GHz, by third antenna 20 is launched after improving transmitting power finally by the 3rd power amplifier 19.Three road signals are launched simultaneously, so can carry out selecting and arranging in pairs or groups according to the transmitting range of corresponding application band and desired signal.
Herein, the first intermediate-freuqncy signal, the second intermediate-freuqncy signal and the 3rd intermediate-freuqncy signal are respectively 1.2GHz, 0.2GHz, 1GHz, also can be set to other operating frequency, and other parts of the crashproof communications transmitter circuit of millimeter wave adjust accordingly.
Frequency multiplier 2 in embodiment adopts the monolithic quadruple chip of UMS company, and incoming frequency scope is 6.25-8.25GHz, and after quadruple, reference frequency output is 25-33GHz.When input signal adopts 7.6GHz, power 12dBm signal, output can obtain a 30.4GHz, the signal of power 11dBm.
The first frequency mixer 5 in embodiment adopts the passive GaAs frequency mixer of Hittite company, this frequency mixer can up-conversion also can down-conversion, the conversion loss of local oscillation signal operating frequency 14-26GHz, 7.5dB; Second frequency mixer 10 adopts the GaAs single sideband mixer of UMS company, and this frequency mixer has mirror image suppression, subharmonic mixing, up-conversion and frequency down-conversion function, the conversion loss of local oscillation signal operating frequency 27.5-32.5GHz, 12dB, the Image-rejection ration of 10dBc; Three-mixer 16 adopts the passive Subharmonic mixer of Hittite company, this frequency mixer can up-conversion also can down-conversion, the conversion loss of local oscillation signal operating frequency 29-43GHz, 11dB.
The first band pass filter 7, second band pass filter 12 in embodiment and the 3rd band pass filter 18 adopt the microstrip coupled structure of zigzag as shown in Figure 2.This structure full symmetric, have function admirable, area is little, and input and output, in the advantage of same level line, make the interconnection between band pass filter and chip more stable and convenient.First band pass filter 7 is operated in 24GHz, bandwidth 2GHz, for extracting the signal of 24GHz, and filtering each harmonic and clutter; Second band pass filter 12 is operated in 61GHz, bandwidth 2GHz, for extracting the signal of 61GHz, and filtering each harmonic and clutter; 3rd band pass filter 18 is operated in 77GHz, bandwidth 2GHz, for extracting 77GHz signal, and the unwanted each harmonic of filtering and clutter.Multiband band pass filter 3, for extracting frequency tripling, quadruple, fifth harmonic signal, is supplied to late-class circuit and uses.Above band pass filter all utilizes Advanced Design System and HFSS to carry out electromagnetic-field simulation with close to actual performance.
In embodiment, the first driving amplifier 4, first power amplifier 8 and the second driving amplifier 15 adopt the level Four GaAs power amplifier chip of UMS company, this four stage power amplifiers operating frequency is at 20-40GHz, gain 22dB, saturation output power 20dBm, there is very good input Broadband Matching, for improving the transmitting power of three times of signals after frequency multiplication, five times of signal powers and first via radiofrequency signal.Second power amplifier 13 adopts the level Four GaAs power amplifier of Hittite company, this power amplifier working frequency range 50-66GHz, gain 24dB, exports 1dB compression horsepower 17dBm, for improving the transmitting power of the second tunnel radiofrequency signal.3rd power amplifier 19 adopts the level Four GaAs power amplifier of Hittite company, and this four stage power amplifier is operated in 71-86GHz, gain 15dB, exports 1dB compression horsepower 15dBm, for improving the transmitting power of the 3rd tunnel radiofrequency signal.
Upper content is the detailed description done the utility model in conjunction with concrete case study on implementation, can not assert that the utility model is specifically implemented to be only limitted to these explanations.For those skilled in the art described in the utility model; without departing from the concept of the premise utility; to each building block of the present utility model, position relationship and connected mode when not changing its function; the equivalent transformation carried out or alternative, also falls into protection range of the present utility model.
The undocumented technology of the utility model belongs to techniques well known.
Claims (6)
1. multiband millimetre-wave attenuator transmitter, comprises multiband millimetre-wave attenuator transmitter circuitry and metal shielding box; The assembling of multiband millimetre-wave attenuator transmitter circuitry is fixed in metal shielding box;
It is characterized in that: described multiband millimetre-wave attenuator transmitter comprises quadrupler, multiband band pass filter, the first driving amplifier, the first frequency mixer, the first band pass filter, the first power amplifier, the second frequency mixer, the second band pass filter, the second power amplifier, the second driving amplifier, three-mixer, the 3rd band pass filter, the 3rd power amplifier, the first antenna, the second antenna, third antenna;
Quadrupler connects a microwave signal source by microwave connector, output is connected with the input of multiband band pass filter, first frequency range output of multiband band pass filter is connected with the input of the first driving amplifier, the output of the first driving amplifier is connected with the local oscillation signal end of the first frequency mixer, the intermediate frequency port of the first frequency mixer connects the first intermediate-freuqncy signal source by microwave connector, the prevention at radio-frequency port of the first frequency mixer is connected with first band pass filter one end, the first band pass filter other end is connected with the input of the first power amplifier, the output of the first power amplifier connects the first antenna by the first millimeter-wave signal interface, second frequency range output of multiband band pass filter is connected with the local oscillation signal end of the second frequency mixer, the intermediate frequency port of the second frequency mixer connects the second intermediate-freuqncy signal source by microwave connector, the prevention at radio-frequency port of the second frequency mixer is connected with one end of the second band pass filter, the other end of the second band pass filter is connected with the input of the second power amplifier, and the output of the second power amplifier connects the second antenna by the second millimeter-wave signal interface, 3rd frequency range output of multiband band pass filter is connected with the input of the second driving amplifier, the output of the second driving amplifier is connected with the local oscillation signal end of three-mixer, the intermediate frequency port of three-mixer connects the 3rd intermediate-freuqncy signal source by microwave connector, the radio-frequency head of three-mixer is connected with one end of the 3rd band pass filter, the 3rd band pass filter other end is connected with the 3rd power amplifier, and the output of the 3rd power amplifier connects third antenna by the 3rd millimeter-wave signal interface.
2. multiband millimetre-wave attenuator transmitter according to claim 1, is characterized in that: described frequency multiplier adopts quadruple monolithic integrated circuit, realizes the quadruple of signal source.
3. multiband millimetre-wave attenuator transmitter according to claim 1, it is characterized in that: the first described band pass filter, the second band pass filter are identical with the 3rd bandpass filter structures, it is the microstrip coupled structure of zigzag, comprises two 50 ohm microstrip, six roots of sensation parallel coupled line and five coupling line connecting lines;
Six roots of sensation parallel coupled line indentation arranges, and by the line serial connection that is of coupled connections, wherein first is connected with 50 ohm microstrip by transition line respectively with last root parallel coupled line.
4. multiband millimetre-wave attenuator transmitter according to claim 1, is characterized in that: the first described frequency mixer adopts fundamental mixer, for the first frequency band signals and the first intermediate-freuqncy signal are carried out first-harmonic uppermixing; Second frequency mixer and three-mixer adopt Subharmonic mixer, second frequency mixer is used for the second frequency band signals and the second intermediate-freuqncy signal to carry out second harmonic uppermixing, and three-mixer is used for the 3rd frequency band signals and the 3rd intermediate-freuqncy signal to carry out second harmonic uppermixing.
5. multiband millimetre-wave attenuator transmitter according to claim 1, is characterized in that: described microwave connector adopts SMA coaxial connector; First millimeter-wave signal interface adopts 2.92mm coaxial connector or the micro-band-waveguide connector of WR28, second millimeter-wave signal interface adopts 1.85mm coaxial connector or the micro-band-waveguide connector of WR15, and the 3rd millimeter-wave signal interface adopts 1mm coaxial connector or the micro-band-waveguide connector of WR10.
6. multiband millimetre-wave attenuator transmitter according to claim 1, is characterized in that: described metal shielding box is processed by brass.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420333756.3U CN204103901U (en) | 2014-06-20 | 2014-06-20 | Multiband millimetre-wave attenuator transmitter |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420333756.3U CN204103901U (en) | 2014-06-20 | 2014-06-20 | Multiband millimetre-wave attenuator transmitter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104397A (en) * | 2014-06-20 | 2014-10-15 | 杭州电子科技大学 | Multi-frequency-band millimeter wave communication transmitter |
| CN111181592A (en) * | 2020-02-13 | 2020-05-19 | 深圳飞骧科技有限公司 | Multi-band radio frequency signal source and debugging equipment |
| CN113872622A (en) * | 2021-10-15 | 2021-12-31 | 上海航天测控通信研究所 | Variable frequency point satellite measurement and control transmitter |
| CN113965211A (en) * | 2021-09-24 | 2022-01-21 | 电子科技大学长三角研究院(湖州) | Novel transmitter device and signal transmitting method suitable for wireless information and energy simultaneous transmission system |
-
2014
- 2014-06-20 CN CN201420333756.3U patent/CN204103901U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104104397A (en) * | 2014-06-20 | 2014-10-15 | 杭州电子科技大学 | Multi-frequency-band millimeter wave communication transmitter |
| CN111181592A (en) * | 2020-02-13 | 2020-05-19 | 深圳飞骧科技有限公司 | Multi-band radio frequency signal source and debugging equipment |
| CN113965211A (en) * | 2021-09-24 | 2022-01-21 | 电子科技大学长三角研究院(湖州) | Novel transmitter device and signal transmitting method suitable for wireless information and energy simultaneous transmission system |
| CN113965211B (en) * | 2021-09-24 | 2023-04-18 | 电子科技大学长三角研究院(湖州) | Novel transmitter device and signal transmitting method suitable for wireless information and energy simultaneous transmission system |
| CN113872622A (en) * | 2021-10-15 | 2021-12-31 | 上海航天测控通信研究所 | Variable frequency point satellite measurement and control transmitter |
| CN113872622B (en) * | 2021-10-15 | 2022-05-27 | 上海航天测控通信研究所 | Variable frequency point satellite measurement and control transmitter |
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