Miniaturized 122 GHz short range radar sensor with antenna-in-package (AiP) and dielectric lens

Göttel, Benjamin; Pauli, Mario; Gulan, Heiko; Girma, M.; Hasch, Jürgen; Zwick, Thomas

doi:10.1109/eucap.2014.6901858

Cited by 13 publications

(4 citation statements)

References 15 publications

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“…For a large dynamic range in radar measurements a high gain antenna is needed besides a good MMIC performance. Thus, additional lenses are used located above the MMIC with on-chip antennas to achieve a high gain and a high SNR [11], [12]. Despite the compactness of the MMIC, the size of the overall system is increased considerably when using bulky lenses.…”

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.

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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%

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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“…Therefore, only a small loss of resolution could be expected if this commercially available technology would be reused. Furthermore, research and development work are also being carried out to employ the 122.5 GHz industrial, scientific, and medical (ISM) band for automotive radar applications [ 36 ]. Hence, one can infer that even extremely inexpensive detectors and low-cost optics can provide THz images of rational quality and can successfully be implemented in various nondestructive inspection systems.…”

Section: Resultsmentioning

confidence: 99%

Design and Performance of Extraordinary Low-Cost Compact Terahertz Imaging System Based on Electronic Components and Paraffin Wax Optics

Tamošiūnas

Minkevičius

Bučius

et al. 2022

Sensors

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Terahertz (THz) imaging is a powerful technique allowing us to explore non-conducting materials or their arrangements such as envelopes, packaging substances, and clothing materials in a nondestructive way. The direct implementation of THz imaging systems relies, on the one hand, on their convenience of use and compactness, minimized optical alignment, and low power consumption; on the other hand, an important issue remains the system cost and its figure of merit with respect to the image quality and recording parameters. In this paper, we report on the design and performance of an extraordinary low-cost THz imaging system relying on a InP Gunn diode emitter, paraffin wax optics, and commercially available GaAs high-electron-mobility transistors (HEMTs) with a gate length of 200 nm as the sensing elements in a room temperature environment. The design and imaging performance of the system at 94 GHz is presented, and the spatial resolution in the range of the illumination wavelength (∼3 mm) and contrast of nearly two orders of magnitude is determined. The operation of two models of the HEMTs of the same nominal 20 GHz cut-off frequency, but placed in different packages and printed circuit board layouts was evaluated at 94 GHz and 0.307 THz. The presence of two competing contributions—self-resistive mixing and radiation coupling through the antenna effects of the printed circuit boards—to the detected signal is revealed by the signal dependence on the gate-to-source voltage, resulting in a cross-sectional responsivity of 27 V/W and noise-equivalent power of 510 pW/Hz at 94 GHz. Further routes in the development of low-cost THz imaging systems in the range of EUR 100 are considered.

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“…As we targeted a cost-effective antenna-system for massmarket product, the use of 3D printing technology and material for the fabrication of the elliptical lens is evaluated next. Usually, quartz material [36][37] or high-density polyethylene (HDPE) [38][39] is used for mm-wave lenses above 60 GHz. However, those materials are expensive and need dedicated tooling.…”

Section: A Abs Materialsmentioning

confidence: 99%

Ball Grid Array Module With Integrated Shaped Lens for 5G Backhaul/Fronthaul Communications in F-Band

Bisognin

Nachabe

Luxey

et al. 2017

IEEE Trans. Antennas Propagat.

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In this paper, we propose a ball grid array (BGA) module with integrated 3D-printed plastic lens and dedicated 120 GHz OOK transceiver for 5G Backhaul/Fronthaul applications. The problem to be addressed is the following: 5G future networks will need backhaul/fronthaul 10Gbps wireless links and it's mandatory to design cost-effective and energy efficient solutions. The proposed solution is made of 3D-printed plastic lens antenna and cheap 7×7×0.362 mm 3 BGA module integrating a 2×2 array of aperture-coupled patch antennas as the source of the lens. The measurement results of the full system confirm the expected performance of the plastic lens: a-10dB matching and a 28 dBi realized gain from 114 to 140 GHz. The active measurements allows a Tx/Rx link >12Gbps data transmission with <10-6 BER at nearly 5m. This link is realized with an energy-efficiency better than 1.6 pJ/b/s which is at least 40 times better than state-ofthe-art high-speed existing TRx's. Those promising results pave the way for future cost-effective and low consumption backhaul/fronthaul systems for 5G communications. What is the novelty of your work over the existing work (100 words)? So far, several wireless links at 120 GHz have been deployed by various authors with very high Gbps speed but at the expense of high DC consumption and bulky material which is in turn correspond to weak integration of the full-system. The novelty of our work lies in the fact that every communicating block has been optimized in conjunction with all the other nearby elements, strongly taking into account cost and integration capability. Therefore a Tx/Rx link >12Gbps data transmission with <10-6 BER at nearly 5m. This link is realized with an energy-efficiency better than 1.6 pJ/b/s which is at least 40 times better than state-of-the-art high-speed existing TRx's. Provide up to three references, published or under review, (journal papers, conference papers, technical reports, etc.) done by the authors/coauthors that are closest to the present work. Upload them as supporting documents if they are under review or not available in the public domain. Enter "N.A." if it is not applicable. [1] A.

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Miniaturized 122 GHz short range radar sensor with antenna-in-package (AiP) and dielectric lens

Cited by 13 publications

References 15 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

Design and Performance of Extraordinary Low-Cost Compact Terahertz Imaging System Based on Electronic Components and Paraffin Wax Optics

Ball Grid Array Module With Integrated Shaped Lens for 5G Backhaul/Fronthaul Communications in F-Band

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