Six-Port Technology for Traffic Safety

Koelpin, Alexander; Vinci, Gabor; Laemmle, Benjamin; Lindner, Stefan; Barbon, Francesco; Weigel, Robert

doi:10.1109/mmm.2012.2185390

Cited by 16 publications

(14 citation statements)

References 23 publications

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“…In this case, the AoA θ can be derived from

Δ φ

in between both receive antennas by trigonometrical dependencies and read as shown in Equation (15) while knowing the wavelength λ of the impinging wave and the receive antenna distance a . Details for this relationship can be found in [43].

\begin{matrix} true \\ right θ & = & left \sin^{- 1} ((), \frac{λ Δ φ}{2 π a}) \end{matrix}

…”

Section: Six-port In Metrologymentioning

confidence: 99%

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Six-Port Based Interferometry for Precise Radar and Sensing Applications

Koelpin

Lurz

Linz

et al. 2016

Sensors

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Microwave technology plays a more important role in modern industrial sensing applications. Pushed by the significant progress in monolithic microwave integrated circuit technology over the past decades, complex sensing systems operating in the microwave and even millimeter-wave range are available for reasonable costs combined with exquisite performance. In the context of industrial sensing, this stimulates new approaches for metrology based on microwave technology. An old measurement principle nearly forgotten over the years has recently gained more and more attention in both academia and industry: the six-port interferometer. This paper reviews the basic concept, investigates promising applications in remote, as well as contact-based sensing and compares the system with state-of-the-art metrology. The significant advantages will be discussed just as the limitations of the six-port architecture. Particular attention will be paid to impairment effects and non-ideal behavior, as well as compensation and linearization concepts. It will be shown that in application fields, like remote distance sensing, precise alignment measurements, as well as interferometrically-evaluated mechanical strain analysis, the six-port architecture delivers extraordinary measurement results combined with high measurement data update rates for reasonable system costs. This makes the six-port architecture a promising candidate for industrial metrology.

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“…In this case, the AoA θ can be derived from

Δ φ

\begin{matrix} true \\ right θ & = & left \sin^{- 1} ((), \frac{λ Δ φ}{2 π a}) \end{matrix}

…”

Section: Six-port In Metrologymentioning

confidence: 99%

“…In Figure 12, a photo and the schematic of a 24-GHz setup combining two separate AoA detection systems are shown. The advantage of this dual six-port approach is that a high observation range combined with high angular resolution in the milli-degree range can be achieved, as is discussed in [43]. …”

Section: Six-port In Metrologymentioning

confidence: 99%

Six-Port Based Interferometry for Precise Radar and Sensing Applications

Koelpin

Lurz

Linz

et al. 2016

Sensors

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“…Since its potential as a direct conversion receiver was discovered [1], six-port receivers have become more and more relevant at microwave frequencies to be used in multiple applications: traffic safety [2], healthcare [3], near-field microscopes [4], etc.…”

Section: Introductionmentioning

confidence: 99%

Butler matrix based six-port passive junction

Moscoso-Mártir

Avila-Ruiz

Durán-Valdeiglesias

et al. 2014

2014 IEEE Topical Conference on Wireless Sensors and Sensor Networks (WiSNet)

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-In this work we propose the utilization of the Butler matrix as a six-port I/Q demodulator. The inherent symmetry of its topology allows to overcome the intrinsic amplitude and phase imbalances of the traditional approaches making it more suitable for the design of high performance six-port networks. To demonstrate the validity of the proposal a Butler matrix has been designed covering the complete UWB band and its results are compared with the traditional approaches.Index Terms -ultra-wideband (UWB), six-port I/Q demodulator, six-port receiver, Butler matrix, phase shifter, quadrature hybrid, power divider, slot-coupled lines.

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“…The Six-port receiver recently raised the interest of the industry [6]. The excellent phase resolution offered by this alternative microwave receiver leads to high accuracy distance and angular measurement capabilities [7].…”

Section: Introductionmentioning

confidence: 99%

A Compact, Versatile Six-Port Radar Module for Industrial and Medical Applications

Linz

Vinci²,

Mann

et al. 2013

Journal of Electrical and Computer Engineering

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The Six-port receiver has been intensively investigated in the last decade to be implemented as an alternative radar architecture. Plenty of current scientific publications demonstrate the effectiveness and versatility of the Six-port radar for special industrial, automotive, and medical applications, ranging from accurate contactless vibration analysis, through automotive radar calibration, to remote breath and heartbeat monitoring. Its highlights, such as excellent phase discrimination, trivial signal processing, low circuit complexity, and cost, have lately drawn the attention of companies working with radar technology. A joint project involving the University of Erlangen-Nuremberg and InnoSenT GmbH (Innovative Sensor Technology) led to the development of a highly accurate, compact, and versatile Six-port radar module aiming at a reliable high-integration of all subcomponents such as antenna, Six-port front-end, baseband circuitry, and digital signal processing in one single package. Innovative aspects in the RF front-end design as well as in the integration strategy are hereby presented, together with a system overview and measurement results.

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Six-Port Technology for Traffic Safety

Cited by 16 publications

References 23 publications

Six-Port Based Interferometry for Precise Radar and Sensing Applications

Six-Port Based Interferometry for Precise Radar and Sensing Applications

Butler matrix based six-port passive junction

A Compact, Versatile Six-Port Radar Module for Industrial and Medical Applications

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