A 128-pixel 0.56THz sensing array for real-time near-field imaging in 0.13μm SiGe BiCMOS

Hillger, Philipp; Jain, Ritesh; Grzyb, Janusz; Mavarani, Laven; Heinemann, B.; Grogan, G. Mac; Mounaix, Patrick; Zimmer, Thomas; Pfeiffer, Ullrich R.

doi:10.1109/isscc.2018.8310362

Cited by 11 publications

(8 citation statements)

References 4 publications

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“…Furthermore, silicon technology facilitates the multipixel integration of near-field sensors, which can reduce required scanning times or obviate the need for scanning in general. Silicon integrated terahertz superresolution sensors have been reported in [22], [29], and [86]. Here, one major implementation challenge is building a highly confined subwavelength near-field probe in a planar technology, which is difficult in view of the thin, electrically small dielectric stack.…”

Section: E Near-field Imagingmentioning

confidence: 99%

“…Here, one major implementation challenge is building a highly confined subwavelength near-field probe in a planar technology, which is difficult in view of the thin, electrically small dielectric stack. The idea applied in [22], [29], and [86] is to measure the resonant shift of a split-ring-resonator (SRR) upon loading it with a sample. Thereby, only the field of the electric-dipole-type field of the split-gap is exposed to the chip top surface and the sensors rely on capacitive near-field coupling with an object.…”

Section: E Near-field Imagingmentioning

confidence: 99%

“…19(c). Thus, a circuit architecture based on power distribution networks was pursued in [29] to achieve a high pixel density in a 1-D array. The THz wave generated by a single oscillator is fanned out to four SRRs, spaced at a 50-μm pitch.…”

Section: E Near-field Imagingmentioning

confidence: 99%

“…The design space that opens up by device plurality, reconfigurability, and THz-mixed signal cointegration promises to expand the functional scope of THz imaging systems. Applications such as THzlight field imaging based on CMOS detector focal-plane arrays (FPAs) [28], real-time subwavelength imaging with integrated near-field arrays [29], and broadband passive spectroscopy [30], have all been demonstrated based on THz ICs that approach integration-levels comparable to the ones exhibited in conventional consumer electronics.…”

Section: Introductionmentioning

confidence: 99%

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Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Hillger

Grzyb

Jain

et al. 2019

IEEE Trans. THz Sci. Technol.

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272

108

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Traditional terahertz (THz) equipment faces major obstacles in providing the system cost and compactness necessary for widespread deployment of THz applications. Because of this, the field of THz integrated circuit (THz IC) design in CMOS and SiGe HBT technologies has surged in the last decade. An interplay of advances in silicon process technology, design technique, and microelectronic packaging promises to narrow the gap between the requirements and the reality of system cost and performance of THz components. Furthermore, the scalability, reconfigurability, and signal processing features of silicon technology have initiated research in complex THz ICs that expand the functionality of THz systems; this has enabled new applications, methods, and algorithms. This paper reviews the progress in THz IC research and investigates several realizations of THz imaging and sensing applications with silicon-based components regarding their motivation, system performance, and challenges. THz computed tomography, broadband multicolor imaging, high-resolution FMCW radar imaging, subwavelength resolution near-field imaging, and compressed sensing are presented.

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Section: E Near-field Imagingmentioning

confidence: 99%

Section: E Near-field Imagingmentioning

confidence: 99%

Section: E Near-field Imagingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Hillger

Grzyb

Jain

et al. 2019

IEEE Trans. THz Sci. Technol.

Self Cite

272

108

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show abstract

“…The objective is to analyze the tissue type responses to submillimeter frequencies that match with BiCMOS technology capabilities [32,33]. Positive results would lead to the design of a new terahertz near-field imaging array working within this frequency band [34]. Indeed, near-field analysis would provide a resolution closer to the typical eukaryote cell diameter and thus, is expected to enhance the accuracy of tissue recognition.…”

Section: Introductionmentioning

confidence: 99%

Pilot study of freshly excised breast tissue response in the 300 – 600 GHz range

Cassar¹,

Al-Ibadi²,

Mavarani³

et al. 2018

Biomed. Opt. Express

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The failure to accurately define tumor margins during breast conserving surgery (BCS) results in a 20% re-excision rate. The present paper reports the investigation to evaluate the potential of terahertz imaging for breast tissue recognition within the under-explored 300 - 600 GHz range. Such a frequency window matches new BiCMOS technology capabilities and thus opens up the opportunity for near-field terahertz imaging using these devices. To assess the efficacy of this frequency band, data from 16 freshly excised breast tissue samples were collected and analyzed directly after excision. Complex refractive indices have been extracted over the as-mentioned frequency band, and amplitude frequency images show some contrast between tissue types. Principal component analysis (PCA) has also been applied to the data in an attempt to automate tissue classification. Our observations suggest that the dielectric response could potentially provide contrast for breast tissue recognition within the 300 - 600 GHz range. These results open the way for silicon-based terahertz subwavelength near field imager design, efficient up to 600 GHz to address ex vivo life-science applications.

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THz Applications

Rieh¹

2020

Introduction to Terahertz Electronics

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A 128-pixel 0.56THz sensing array for real-time near-field imaging in 0.13μm SiGe BiCMOS

Cited by 11 publications

References 4 publications

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Terahertz Imaging and Sensing Applications With Silicon-Based Technologies

Pilot study of freshly excised breast tissue response in the 300 – 600 GHz range

THz Applications

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