&lt;title&gt;Laser range-finding techniques in the sensing of 3-D objects&lt;/title&gt;

Kaisto, Ilkka P.A.; Kostamovaara, J.; Moring, Ilkka; Myllylae, Risto A.

doi:10.1117/12.20011

Cited by 12 publications

(3 citation statements)

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“…where , is the noise from a single photosensitive cell, , is the generated noise in the current buffer stage, , is the generated noise in the second combining stage, and , and , are the thermal noise from R1 and R3, respectively. In this analysis, we assume that: In (2), the receiver noise with a large-area photodetector, even though it is partitioned, is increased in the developed TCA. The noise generated in the first combining stage with the current buffer is also the dominant factor of the equivalent total noise.…”

Section: -To-1 Tca Post-amplifier Balun and Output Buffermentioning

confidence: 99%

“…The simulated transimpedance gain of the developed TCA obtained using this balun and output buffer is shown in Figure 9. The transimpedance gain is approximately 68 dBΩ In (2), the receiver noise with a large-area photodetector, even though it is partitioned, is increased in the developed TCA. The noise generated in the first combining stage with the current buffer is also the dominant factor of the equivalent total noise.…”

Section: -To-1 Tca Post-amplifier Balun and Output Buffermentioning

confidence: 99%

“…Laser detection and ranging (LADAR) systems are commonly used to acquire real-time three-dimensional (3D) images using the time-of-flight (TOF) of a short laser pulse. As LADAR technology has become more diverse, it has been utilized in various applications, such as autonomous vehicles, robots, remote sensing, reconnaissance, and motion detection, where high 3D resolution is important [1][2][3][4][5][6][7][8][9][10]. For the real-time acquisition of 3D images, a LADAR system must process all reflected TOF laser signals from every direction for a region-of-interest (ROI) in real time.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Switched 4-to-1 Transimpedance Combining Amplifier for Receiver Front-End Circuit of Static Unitary Detector-Based LADAR System

Lee¹,

Lee²,

Jung³

et al. 2017

Applied Sciences

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Laser detection and ranging (LADAR) systems are commonly used to acquire real-time three-dimensional (3D) images using the time-of-flight of a short laser pulse. A static unitary detector (STUD)-based LADAR system is a simple method for obtaining real-time high-resolution 3D images. In this study, a switched 4-to-1 transimpedance combining amplifier (TCA) is implemented as a receiver front-end readout integrated circuit for the STUD-based LADAR system. The 4-to-1 TCA is fabricated using a standard 0.18 µm complementary metal-oxide-semiconductor (CMOS) technology, and it consists of four independent current buffers, a two-stage signal combiner, a balun, and an output buffer in one single integrated chip. In addition, there is a switch on each input current path to expand the region of interest with multiple photodetectors. The core of the TCA occupies an area of 92 µm × 68 µm, and the die size including I/O pads is 1000 µm × 840 µm. The power consumption of the fabricated chip is 17.8 mW for a supplied voltage of 1.8 V and a transimpedance gain of 67.5 dBΩ. The simulated bandwidth is 353 MHz in the presence of a 1 pF photodiode parasitic capacitance for each photosensitive cell.

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Section: -To-1 Tca Post-amplifier Balun and Output Buffermentioning

confidence: 99%

Section: -To-1 Tca Post-amplifier Balun and Output Buffermentioning

confidence: 99%