An Ultra-Wideband 80 GHz FMCW Radar System Using a SiGe Bipolar Transceiver Chip Stabilized by a Fractional-N PLL Synthesizer

Pohl, Nils; Jaeschke, Timo; Aufinger, Klaus

doi:10.1109/tmtt.2011.2180398

Cited by 219 publications

(78 citation statements)

References 23 publications

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“…As can be seen, the frequency error can be improved upon, but the chirp rate is by far the highest reported. Fractional bandwidth is surpassed only by [6], which has a far lower level of integration than this work.…”

Section: Comparison To Other Workmentioning

confidence: 69%

A multi-band, high bandwidth, short duration linear chirp generation IC for phased-array applications

Velner

Klumperink

Nauta

et al. 2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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This work presents a fully integrated multi-band frequency synthesizer that is capable of creating wide-band linear frequency sweeps of very short duration. The main aim is to create a flexible waveform generation system, requiring distribution of a low frequency reference rather than RF signals. By using a phase-locked loop, frequency multiplication (rather than shifting) occurs. This allows for a narrow band and low frequency reference signal, allowing digital reference generation and thus providing a large degree of flexibility. Chirps with a bandwidth of 1 GHz (in X-band) and duration as short as 10 µs can be created. The chip can be operated in either pulsed or CW mode. The small external size of the package, which measures 5x5 mm 2 , means that local RF generation is possible even in X-band arrays with small antenna element pitch.

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Section: Comparison To Other Workmentioning

confidence: 69%

A multi-band, high bandwidth, short duration linear chirp generation IC for phased-array applications

Velner

Klumperink

Nauta

et al. 2013

2013 IEEE International Symposium on Phased Array Systems and Technology

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“…For thinner structures with similar material compositions, one could take advantage of higher operation frequencies (e.g., around 300 GHz) in order to achieve a better spatial resolution with a single transceiver unit [1]. In the future, the use of integrated ultra-wide band radar chips [10][11][12], in connection with embedded sensor control systems, could lead to more compact sensor layouts. If a high imaging throughput is required one could take advantage of array solutions, as we recently demonstrated in [13].…”

Section: Discussionmentioning

confidence: 99%

Terahertz Radome Inspection

et al. 2018

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Radomes protecting sensitive radar, navigational, and communications equipment of, e.g., aircraft, are strongly exposed to the environment and have to withstand harsh weather conditions and potential impacts. Besides their significance to the structural integrity of the radomes, it is often crucial to optimize the composite structures for best possible radio performance. Hence, there exists a significant interest in non-destructive testing techniques, which can be used for defect inspection of radomes in field use as well as for quality inspection during the manufacturing process. Contactless millimeter-wave and terahertz imaging techniques provide millimeter resolution and have the potential to address both application scenarios. We report on our development of a three-dimensional (3D) terahertz imaging system for radome inspection during industrial manufacturing processes. The system was designed for operation within a machining center for radome manufacturing. It simultaneously gathers terahertz depth information in adjacent frequency ranges, from 70 to 110 GHz and from 110 to 170 GHz by combining two frequency modulated continuous-wave terahertz sensing units into a single measurement device. Results from spiraliform image acquisition of a radome test sample demonstrate the successful integration of the measurement system.

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“…Their area of application ranges from very basic systems to accurate but complex systems like tank level gauges and industrial positioning sensors [1], [2]. Plenty of those systems are based on frequency modulated continuous wave (FMCW) technology and some of them even feature micrometer accuracy with sub-micrometer standard deviation [3]. However, by means of the measurement principle, high bandwidth is necessary to achieve those results (e.g., 32.8 % relative bandwidth at 146 GHz center frequency [4]).…”

Section: Introductionmentioning

confidence: 99%

Differential measuring dual six-port concept and antenna design for an inline foil thickness sensor

Mann

Linz

Erhardt

et al. 2016

2016 German Microwave Conference (GeMiC)

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Sensor elements play an important role in future manufacturing plants. This paper presents a solution for a foil thickness sensor for running production lines. Based on the elaborated Six-Port principle, a differential measuring concept is proposed and discussed. Furthermore, an end-fire antenna design for the addressed application is demonstrated and farfield measurement results are shown and compared to simulation. Finally, interference effects between two antennas are experimentally investigated as a function of the relative rotation between two oppositely placed devices.

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An Ultra-Wideband 80 GHz FMCW Radar System Using a SiGe Bipolar Transceiver Chip Stabilized by a Fractional-N PLL Synthesizer

Cited by 219 publications

References 23 publications

A multi-band, high bandwidth, short duration linear chirp generation IC for phased-array applications

A multi-band, high bandwidth, short duration linear chirp generation IC for phased-array applications

Terahertz Radome Inspection

Differential measuring dual six-port concept and antenna design for an inline foil thickness sensor

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