Next Generation of Automotive Radar with Leading-Edge Advances in SiGe Devices and Glass Panel Embedding (GPE)

Shi, Tailong; Gong, Yunyi; Ravichandran, Siddharth; Cressler, John D.; Tummala, Rao

doi:10.1109/ectc.2018.00192

Cited by 7 publications

(4 citation statements)

References 15 publications

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“…The radiating elements and their feeding structures are integrated on the top side of the package, while the filters and the fan-out of the baseband signals are realized on the bottom side in order to prevent the degradation of the radiation characteristics. Following a similar package configuration, a multi-die automotive radar module at E-band has been proposed [86].…”

Section: Packaging and Interposer Solutionsmentioning

confidence: 99%

“…This includes chip-to package microvia transitions (see Fig. 7(f)) which land from the thin build-up layers directly onto the chip pads [85], [86], [19], [81], [88]. Via-in-via through package interconnects [26], [80], [81] and microviaenhanced organic RDLs on glass core substrates [114], [115], [116] were also reported for future HPC and wireless communications systems.…”

Section: Components a Transmssion Lines And Interconnectsmentioning

confidence: 99%

See 1 more Smart Citation

RF Glass Technology Is Going Mainstream: Review and Future Applications

Chaloun¹,

Brandl²,

Ambrosius³

et al. 2023

IEEE J. Microw.

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Driven by the increasing demand for high-throughput communication links and high-resolution radar sensors, the development of future wireless systems pushes at ever greater operating frequencies. By analogy, high-performance computing (HPC) systems with high-bandwidth I/Os have become a mainstream solution to address multi Gbit/s data rates. Heterogeneous integration technologies play a vital role here in enhancing the performance and functional density, along with reducing the size and costs of such RF systems. In line with this trend, many passive components, which have once been monolithically integrated, are now implemented on ceramic or polymer-based packages. Besides these long-established material and process technologies, considerable efforts have also recently been devoted to the development of RF components on glass and glass-ceramics. Spurred by their low dielectric losses, extremely smooth surfaces, and excellent dimensional stability, glass technologies are emerging as a promising alternative for high-volume and high-performance RF applications. In this article, relevant glass materials and key enabling technologies are reviewed and put into context with well-established RF substrate technologies. Another focus is set on the latest glass-based packaging and interposer solutions ranging from MHz-to-THz frequencies. To showcase the development activities and practical accomplishments of the RF glass technology, also a large variety of key components is presented. Finally, the paper concludes by discussing future research and development directions of RF glass devices.INDEX TERMS MTT 70th Anniversary Special Issue, glass technology, dielectrics, packaging, interposer, system-on-package, interconnects, filters, antennas, antenna-in-package, millimeter wave (mm-wave).

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Section: Packaging and Interposer Solutionsmentioning

confidence: 99%

Section: Components a Transmssion Lines And Interconnectsmentioning

confidence: 99%

RF Glass Technology Is Going Mainstream: Review and Future Applications

Chaloun¹,

Brandl²,

Ambrosius³

et al. 2023

IEEE J. Microw.

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“…In general, these factors are called phase noise. Many previous studies focused on the topic of phase noise in recent years, most of wich have dealt with phase noise that occurs in attempting to realise an ideal RF signal on a compact device [12][13][14][15][16]. However, [17][18][19][20][21] published theoretical descriptions of nonlinear frequency ramps and their consequences for object estimation.…”

Section: Theoretical Signal Deviations Due To Nonlinear Movementsmentioning

confidence: 99%

The Degradation of Automotive Radar Sensor Signals Caused by Vehicle Vibrations and Other Nonlinear Movements

Hau

Baumgärtner

Vossiek

2020

Sensors

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As the demands on modern radar systems with respect to accuracy, reliability, and availability increase, a detailed assessment of the influence of nonlinear movements has become necessary. In particular, from the point of view of radar, different types of movements, such as any kind of acceleration, braking situation, or vehicle vibration, are essential parts of any traffic scenario. These unavoidable motions, in which the relative velocity changes within one measurement cycle, are called nonlinear movements. These nonlinearities contribute to intermediate frequencies, which are comparable to the extensively described nonlinearities of a frequency ramp. This additional contribution to the intermediate signal has a direct effect on the signal-to-noise ratio and thus on the accuracy and probability of target detection. This paper presents a study of various types of nonlinear motion and a detailed definition of the resulting parameters based on a variety of vehicle-based measurements. An advanced signal model of frequency-modulated continuous wave (FMCW) radar is introduced and verified in addition to a detailed mathematical description of spectral signal behaviour in sinusoidal motions and linear acceleration. The theoretical and experimental results in idealised point targets are transferred to real complex road users. Furthermore, by applying established automotive signal processing steps in the form of an ordered statistical constant false alarm rate (OS CFAR), the consequences of determining the noise level are also shown. In combination with the already introduced signal behaviour, these results enabled general description of the signal-to-noise ratio of nonlinear movements in complex traffic scenarios.

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“…At the early stage, the application of 77 GHz band is mainly driven by the advanced driver assistance system (ADAS) [6]- [7]. Thanks to the development of highly integrated silicon germanium (SiGe) single-chip radar transceiver [8]- [9], numerous applications come true, for instance, perimeter intrusion detection, airport runway foreign object debris detection, life signs monitoring, intelligent traffic system, and so on [10]- [15]. In all the applications, range resolution and angular resolution are two important indexes of radar systems.…”

Section: Introductionmentioning

confidence: 99%

An E-Band Beam Sharpening Antenna Based on Monopulse Comparator

Teng

Wang

2021

IEEE Access

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An E-band antenna module and corresponding beam sharpening method is proposed to achieve high azimuth resolution for front-looking real aperture radar application. To achieve high angular resolution with a small antenna aperture size, a solution involving real beam and super-resolution is investigated. A monopulse antenna is developed to produce two coprime channels, which are essential for the subsequent beam sharpening in digital domain. A dual-aperture horn antenna and a monopulse comparator that make up the monopulse antenna are designed respectively, and the experimental prototypes are fabricated and tested. Experimental results show the antenna module can operate in the 75 to 80 GHz band, more than 20 dBi gain and 12 half power azimuth beamwidth can be maintained in the sum-patterns, and the null-depths are lower than -20 dB in the difference-patterns. Based on the measured sum and difference patterns, an azimuth super-resolution processing based on two-channel deconvolution is implemented. The simulation results show the sharpening ratio can achieve 12 dB with 0 dB signal-noiseratio and truncated half power beamwidth. Theoretically, the azimuth super-resolution of 0.8° can be achieved with 20 mm aperture size. The corresponding achievements are valuable in the follow-up E-band civil front-looking imaging system.INDEX TERMS E-band antenna, monopulse comparator, high angular resolution, super-resolution.

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Next Generation of Automotive Radar with Leading-Edge Advances in SiGe Devices and Glass Panel Embedding (GPE)

Cited by 7 publications

References 15 publications

RF Glass Technology Is Going Mainstream: Review and Future Applications

RF Glass Technology Is Going Mainstream: Review and Future Applications

The Degradation of Automotive Radar Sensor Signals Caused by Vehicle Vibrations and Other Nonlinear Movements

An E-Band Beam Sharpening Antenna Based on Monopulse Comparator

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