LU101283B1 - Broadband RF transceiver architecture supporting dual modes of UWB and FMCW - Google Patents

Broadband RF transceiver architecture supporting dual modes of UWB and FMCW Download PDF

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Publication number
LU101283B1
LU101283B1 LU101283A LU101283A LU101283B1 LU 101283 B1 LU101283 B1 LU 101283B1 LU 101283 A LU101283 A LU 101283A LU 101283 A LU101283 A LU 101283A LU 101283 B1 LU101283 B1 LU 101283B1
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LU
Luxembourg
Prior art keywords
fmcw
uwb
dual
broadband
architecture supporting
Prior art date
Application number
LU101283A
Other languages
German (de)
Inventor
Jianguo Ma
Shaohua Zhou
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Qingdao Institute For Ocean Technology Of Tianjin Univ
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Publication of LU101283B1 publication Critical patent/LU101283B1/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/03—Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
    • G01S7/032—Constructional details for solid-state radar subsystems
    • 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
    • H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/0209—Systems with very large relative bandwidth, i.e. larger than 10 %, e.g. baseband, pulse, carrier-free, ultrawideband
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/28—Details of pulse systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S7/00—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00
    • G01S7/02—Details of systems according to groups G01S13/00, G01S15/00, G01S17/00 of systems according to group G01S13/00
    • G01S7/35—Details of non-pulse systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/401—Circuits for selecting or indicating operating mode
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/89—Radar or analogous systems specially adapted for specific applications for mapping or imaging
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles

Abstract

Disclosed is an architecture supporting a high output power FMCW RF system with suppression of transceiver coupling. On the basis of a FMCW system achieving high output power, in connection with the working principle of the FMCW system, the coupling between a transmitter and a receiver is suppressed through a cancellation technology of an attenuator + a phase shifter at a transmitting end; the present invention is based on the semiconductor technology, facilitates integration with a back-end circuit, is easy to achieve mass production, thereby reducing the cost of the development of subsequent products; such cancellation technology can be adopted to achieve good isolation between the transmitter and the receiver, which can meet the demands of the system; and based on this cancellation technology, the FMCW system with high output power can be designed, which greatly reduces the influences of signal coupling between the transmitter and the receiver on the overall system operation.

Description

BROADBAND RF TRANSCEIVER ARCHITECTURE SUPPORTING DUAL MODES OF UWB AND FMCW
Technical field
The present invention belongs to the field of microwave engineering, and particularly relates to a broadband RF transceiver architecture suitable for supporting ultra-wideband + frequency modulated continuous waves, i.e., a broadband RF transceiver architecture supporting dual modes of UWB and FMCW.
Technical background
With the growing demand for high-integration products (imaging, automotive radar, etc.) and the development of terahertz technology, high-efficiency and high-integration transceiver chips with low cost are a major trend in the future. For example, in the field of automotive radars, millimeter wave radars can be of small volume and easy to install, which is suitable for use as anti-collision and ranging radars in the automotive vehicles. Therefore, in order to meet both low cost and high integration requirements, the advantages of semiconductor technology-based terahertz transceiver chips in future product applications are becoming more and more obvious.
In an ultra-wideband (UWB) radar system, a wider bandwidth can be achieved, so that a higher range resolution can be achieved. However, because the range that can be detected by the UWB radar is limited due to the low power allowed during use, the detection probability is small, and it is more suitable for short-range radars. A frequency modulated continuous wave (FMCW) radar requires less transmission power and requires continuous transmission power. The required peak power is low, which can produce a better signal-to-noise ratio. However, the disadvantage is that the bandwidth is narrow and the range resolution is low, which is suitable for long-range radars.
Combining the respective advantages and disadvantages of UWB and FMCW and the complexity of practical application scenarios, more products use dual-mode radars to meet such requirements. This not only does not require additional paths, but also greatly reduces the number of chips in the actual use, reducing the power consumption and chip area. It has been currently used in many fields, such as automotive radars, drones, and so on. Dual-mode radars are a trend in future applications.
However, in the design of dual-mode radars, the requirement for the bandwidth of a system front-end module is very high, and it must meet certain requirements, while the bandwidth requirements of FM continuous wave and ultra-wideband radars are met. Especially in RF systems, semiconductor-based transceivers would have many parasitic parameters, which greatly limit the working bandwidth of the entire system. Therefore, how to implement a dual-mode (UWB/FMCW) system based on the semiconductor technology while considering the bandwidth of the entire RF front end is a difficult point in the implementation of dual-mode radars.
Summary of the invention
In order to solve the problems existing in the prior art, a broadband RF transceiver architecture supporting dual modes of UWB and FMCW is proposed. A system framework for implementing dual-mode radars is proposed by means of signal source modulation, and the expansion of the bandwidth of the RF front end is realized by a method of frequency staggering. Finally, the design of the semiconductor-based dual-mode (FMCW/UWB) framework is realized while considering the bandwidth of the RF front end. A broadband RF transceiver architecture supporting dual modes of UWB and FMCW is proposed, based on a basic framework of an existing FMCW system, on the basis of which a pulse signal (pulse wave), a multiplexer (Mux) and a control voltage are added to a signal source portion to realize switching between two working modes of UWB/FMCW. At the same time, in two modules of a power amplifier (PA) and a low noise amplifier (LNA) of a RF front end, frequency bandwidths are each expanded by means of frequency staggering, that is, PA/LNA is realized by multiple stages, center frequencies of each stage are staggered respectively, a wide frequency band range can be realized in the final synthesis.
Finally, a wide working bandwidth is provided for a dual-mode radar system to ensure the normal operation of the radar. A broadband RF transceiver architecture supporting dual modes of UWB and FMCW has the following advantages: 1) Based on the semiconductor technology, it facilitates integration with a back-end circuit, and it is easy to achieve mass production, thereby reducing the cost of the development of subsequent products. 2) A dual-mode radar is realized, greatly reducing the power consumption and chip area, and meeting the requirements of complex application scenarios. 3) Based on the design method of the front-end module with staggered frequency, a wide range of working frequency is realized, which satisfies the bandwidth requirement of the normal operation of the dual-mode radar.
Brief description of the drawings
Fig. 1 is a schematic diagram of a dual-mode radar RF transceiver architecture; and
Fig. 2 is a schematic diagram of an expanded bandwidth of a RF front-end module.
Detailed description of the embodiments
In order to more clearly explain the technical solutions of the present invention, the present invention will be further described below in conjunction with the accompanying drawings. A broadband RF transceiver architecture supporting dual modes of UWB and FMCW is proposed. The entire system mainly includes a transmission link and a reception link, as shown in Fig. 1. The transmission link and the reception link share a signal source portion through a Power Divider. The signal source portion includes a voltage-controlled oscillator VCO, a multiplexer Mux, and a buffer Buffer.
Among them, the VCO provides continuous waves at a certain frequency for the whole system, and the change of the oscillator frequency can be realized by changing the control voltage Vtune. The Mux is used to control whether the continuous wave signal is pulse modulated. When control terminals A and B are at a high level and at a low level respectively, the Mux is in the through state, that is, the continuous wave signal outputted by the VCO is not modulated, and is still a continuous wave signal; and when the control terminals A and B are at a low level and at a high level respectively, the Mux modulates the pulse wave and the continuous wave output from the VCO, and the Mux outputs the pulse wave. The Buffer is used to amplify the signal from the Mux. The signal at the output of the Buffer serves as an input signal to the Power Divider, and the Power Divider eventually produces two signals. One signal provides an input for the buffer of the transmitting end, and the other signal is changed by a balun Baiun into a differential signal as a local oscillator input signal of a mixer. An output signal of the buffer at the transmitting end is used to drive a power amplifier PA, thereby achieving a certain power output, and finally the signal is radiated through an antenna TxAntenna at the transmitting end. The receiving end will receive a signal in the space through an antenna Rx_Antenna at the receiving end, and amplify the signal through a low noise a mplifier LNA. The amplified signal is used as an RF input of the Mixer, and is multiplied through the mixer with the local oscillator signal provided by the Baiun to obtain an intermediate frequency output IF_out.
In order to meet the bandwidth requirements of the UWB for the RF front end in the dual-mode system, as shown in Fig. 2, in the design of the PA and LNA, the bandwidth is expanded in the form of frequency spacing. In Fig. 2, the amplifier includes three stages (the actual number of stages can be appropriately increased according to the requirements of the system), wherein the center frequencies of the first, second and third stages of operation are f 1, f2 and f3, respectively, the bandwidths of f1 and f2 overlap in the middle, and the bandwidths of f2 and f3 also overlap in the middle, thereby realizing the expansion of the bandwidth of the RF front-end module.

Claims (2)

Anspruchclaim 1. Eine Breitband-Radiofrequenz-Transceiver-Architektur, die duale Modi von UWB und FMCW unterstützt, dadurch gekennzeichnet, dass sie auf einem Rahmen eines bestehenden FMCW-Systems basiert, auf dessen Grundlage ein Impulssignal, ein Multiplexer und eine Steuerspannung zu einem Signalquellenteil hinzugefügt werden, um das Umschalten zwischen zwei Arbeitsmodi von UWB / FMCW zu realisieren; und gleichzeitig in zwei Modulen eines Leistungsverstärkers und eines rauscharmen Verstärkers eines HF-Frontends die Frequenzbandbreiten jeweils durch Frequenzstaffelung erweitert werden, d.h. PA / LNA durch mehrere Stufen realisiert wird, wobei Mittenfrequenzen von jeder Stufe jeweils gestaffelt sind, und ein breiter Frequenzbandbereich bei der Endsynthese realisiert werden kann, und schließlich eine breite Arbeitsbandbreite für ein Dual-Mode-Radarsystem vorgesehen ist, um den normalen Betrieb des Radars sicherzustellen.A broadband radio frequency transceiver architecture supporting dual modes of UWB and FMCW, characterized in that it is based on a frame of an existing FMCW system, based thereon a pulse signal, a multiplexer and a control voltage are added to a signal source part to realize switching between two working modes of UWB / FMCW; and at the same time, in two modules of a power amplifier and a low noise amplifier of an RF front end, the frequency bandwidths are each expanded by frequency scaling, i. PA / LNA is realized by several stages, wherein center frequencies of each stage are staggered respectively, and a wide frequency band range can be realized in the final synthesis, and finally a wide working bandwidth for a dual-mode radar system is provided to the normal operation of the radar sure.
LU101283A 2018-09-29 2019-07-02 Broadband RF transceiver architecture supporting dual modes of UWB and FMCW LU101283B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201811152697.9A CN110995290A (en) 2018-09-29 2018-09-29 Wideband radio frequency transceiver architecture supporting UWB and FMCW dual modes

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EP4362340A1 (en) 2021-09-08 2024-05-01 Samsung Electronics Co., Ltd. Electronic device, and method for transmitting uwb signal in electronic device

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US8729962B2 (en) * 2011-12-15 2014-05-20 Qualcomm Incorporated Millimeter wave power amplifier
CN103391054A (en) * 2013-07-08 2013-11-13 吴江市同心电子科技有限公司 Ultra wideband high-gain low-noise amplifier
CN106788295B (en) * 2017-01-06 2019-04-19 上海华虹宏力半导体制造有限公司 A kind of casacade multi-amplifier
EP3376255B1 (en) * 2017-03-14 2021-11-17 Nxp B.V. Reconfigurable radar unit, integrated circuit and method therefor
CN107819490A (en) * 2017-09-14 2018-03-20 天津大学 A kind of pulse ultra-broad band Terahertz receives and dispatches framework

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Effective date: 20191108