A 210–270-GHz Circularly Polarized FMCW Radar With a Single-Lens-Coupled SiGe HBT Chip

Grzyb, Janusz; Statnikov, Konstantin; Sarmah, Neelanjan; Heinemann, B.; Pfeiffer, Ullrich R.

doi:10.1109/tthz.2016.2602539

Cited by 113 publications

(60 citation statements)

References 49 publications

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“…Therefore, the demand for cheap and compact radar systems for industrial applications like level measurements in tanks [1], surveillance of conveyor belts, or sensors in the automotive industry [2], [3] increases. By integrating complete radar systems on chip in silicongermanium (SiGe), a cost efficient production is possible for different frequencies from 60 GHz [4] over 90 GHz [5] up to more than 100 GHz [6], [7]. With on-chip antennas and antennas-in-package, the compactness of radar systems is further increased and lossy MMIC-to-PCB transitions are avoided [8]- [10].…”

Section: Introductionmentioning

confidence: 99%

“…Despite the compactness of the MMIC, the size of the overall system is increased considerably when using bulky lenses. The on-chip antenna gain can also be improved by more compact MMIC extensions like a horn [13] or a bulk lens [7]. However, these radars are not flexible to go around obstacles and detect hidden targets and can therefore only detect targets within the beamwidth of the antenna.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

A 160-GHz Radar With Flexible Antenna Used as a Sniffer Probe

Geiger¹,

Hitzler²,

Saulig³

et al. 2017

IEEE Sensors J.

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In radar measurements the observed area is limited by the antenna beamwidth and due to the usually fixed transceiver position, only unhidden targets in a small observation area can be detected. Furthermore, bulky lens dimensions prevent the use of radar systems in constricted surroundings despite the small dimensions of microwave monolithic integrated circuit (MMIC) radars. To avoid this issue, a new system concept for a flexible and low cost 160 GHz radar sniffer probe is presented. The flexible sniffer probe is an extremely low loss dielectric waveguide with a dielectric elliptical lens (28 dBi) at the end. The dielectric waveguide has dielectric losses of 4.5 dB/m at 160 GHz and high flexibility, supporting bending radii of 1.5 cm with negligible losses. To feed the dielectric waveguide a metallic waveguide with a duplexer is used which is fed by a special MMIC-to-metallic waveguide transition. The proposed system expands the known radar measurement scenarios with new industrial, medical, and security applications.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A 160-GHz Radar With Flexible Antenna Used as a Sniffer Probe

Geiger¹,

Hitzler²,

Saulig³

et al. 2017

IEEE Sensors J.

View full text Add to dashboard Cite

show abstract

“…Future electronic terahertz systems profit from the tremendous development of millimeterwave and terahertz-integrated circuits, which can provide a significant cost reduction and allow for more compact system designs as well as highly integrated multistatic array solutions such as shown for microwave imaging in [55]. Besides stepped-frequency and FMCW radar approaches [56][57][58], also broadband pulsed systems can be considered [59].…”

Section: Discussionmentioning

confidence: 99%

Terahertz Quality Inspection for Automotive and Aviation Industries

Ellrich

Bauer

Schreiner

et al. 2019

J Infrared Milli Terahz Waves

131

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Nondestructive quality inspection with terahertz waves has become an emerging technology, especially in the automotive and aviation industries. Depending on the specific application, different terahertz systems-either fully electronic or based on optical laser pulses-cover the terahertz frequency region from 0.1 THz up to nearly 10 THz and provide high-speed volume inspections on the one hand and high-resolution thickness determination on the other hand. In this paper, we present different industrial applications, which we have addressed with our terahertz systems within the last couple of years. First, we show three-dimensional imaging of glass fiber-reinforced composites and foam structures, and demonstrate thickness determination of multilayer plastic tube walls. Then, we present the characterization of known and unknown multilayer systems down to some microns and the possibility of measuring the thickness of wet paints. The challenges of system reliability in industrial environments, e.g., under the impact of vibrations, and effective solutions are discussed. This paper gives an overview of state-of-the-art terahertz technology for industrial quality inspection. The presented principles are not limited to the automotive and aviation industries but can also be adapted to many other industrial fields.

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“…To avoid the excitation of substrate modes, a silicon hemispherical lens which has similar dielectric constant as the Si substrate (ε r =11.9) is applied and integrated with a silicon extended hemispherical lens [16]. Also, the silicon lens is used partially as a heat sink [17]. The multi-port radiator, which combines four differential power amplifiers as one example, is placed at the focal plane of the lens.…”

Section: Introductionmentioning

confidence: 99%

A Multiple-Feed Connected Leaky Slot Antenna for In-Antenna Power Combining in 0.13 μm SiGe BiCMOS Technology

Chen

Berg

et al. 2020

2020 14th European Conference on Antennas and Propagation (EuCAP)

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In this paper, a differentially-driven wideband multiple-feed on-chip antenna design in 0.13 µm SiGe technology is proposed for millimeter-wave power combining applications. The in-antenna power combining concept is achieved by combining parallel amplifiers in the multi-port radiator where each port corresponds directly to a differential power amplifier (PA) stage. Specifically, the radiator is composed of a leaky slot with multiple set of differential microstrip feed lines. A wideband Marchand balun with 1.5 dB insertion loss is applied to convert the differential output to the single-ended input of microstrip feed line. In addition, the proposed differential PA has a combined output power of 10 dBm and its output is directly connected with the balun. As a result, the proposed multiple-feed antenna has four differential microstrip feed lines connected with four Marchand baluns which are driven by four parallel differential PAs respectively. Also, to compensate for the loss along the signal route such as power splitters and baluns, pre-amplification PA stage is a necessity at the input of each PA stage. In order to suppress the surface waves in the high permittivity substrate, an extended hemispherical silicon lens is integrated with the chip. Simulation results show that the antenna can cover more than 50 % fractional bandwidth at 250 GHz and calculated EIRP is 19.3 dBm. Index Terms-on-chip antenna, connected slot antenna, power combining, multiple-port antenna, SiGe BiCOMS.

show abstract

A 210–270-GHz Circularly Polarized FMCW Radar With a Single-Lens-Coupled SiGe HBT Chip

Cited by 113 publications

References 49 publications

A 160-GHz Radar With Flexible Antenna Used as a Sniffer Probe

A 160-GHz Radar With Flexible Antenna Used as a Sniffer Probe

Terahertz Quality Inspection for Automotive and Aviation Industries

A Multiple-Feed Connected Leaky Slot Antenna for In-Antenna Power Combining in 0.13 μm SiGe BiCMOS Technology

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