Accurately Modeling of Zero Biased Schottky-Diodes at Millimeter-Wave Frequencies

Gutiérrez, Jaime; Zeljami, Kaoutar; Fernández, T.; Pascual, Juan Pablo; Tazón, A.

doi:10.3390/electronics8060696

Cited by 11 publications

(8 citation statements)

References 19 publications

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“…If bandwidth is needed, sensitivity will be low. This is due to a compromise between the video-bandwidth and sensitivity in the THz detectors [22][23][24]. Then, one kind of detector is used for instrumentation (to improve dynamic range) and the others are suitable for telecommunications (since, in this kind of scenario, systems need to deal with broadband signals) [25][26][27].…”

Section: Tdcs Architecturementioning

confidence: 99%

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Betancur-Pérez

Martín-Mateos

Dios

et al. 2020

Sensors

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In this work, we present a multipurpose photonic integrated circuit capable of generating multiheterodyne complex Dual-Combs (DC) THz signals. Our work focuses on translating the functionality of an electro-optic tunable DC system into a photonic chip employing standard building blocks to ensure the scalability and cost efficiency of the integrated device. The architecture we analyze for integration is based on three stages: a seed comb, a mode selection stage and a DC stage. This final DC stage includes a frequency shifter, a key element to improve the final detection of the THz signals and obtain real-time operation. This investigation covers three key aspects: (1) a solution for comb line selection on GHz spaced combs using OIL or OPLL on photonic chips is studied and evaluated, (2) a simple and versatile scheme to produce a frequency shift using the double sideband suppressed carrier modulation technique and an asymmetric Mach Zehnder Interferometer to filter one of the sidebands is proposed, and (3) a multipurpose architecture that can offer a versatile effective device, moving from application-specific PICs to general-purpose PICs. Using the building blocks (BBs) available from an InP-based foundry, we obtained simulations that offer a high-quality Dual-Comb frequency shifted signal with a side mode suppression ratio around 21 dB, and 41 dB after photodetection with an intermediate frequency of 1 MHz. We tested our system to generate a Dual-Comb with 10 kHz of frequency spacing and an OOK modulation with 5 Gbps which can be down-converted to the THz range by a square law detector. It is also important to note that the presented architecture is multipurpose and can also be applied to THz communications. This design is a step to enable a commercial THz photonic chip for multiple applications such as THz spectroscopy, THz multispectral imaging and THz telecommunications and offers the possibility of being fabricated in a multi-project wafer.

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Section: Tdcs Architecturementioning

confidence: 99%

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Betancur-Pérez

Martín-Mateos

Dios

et al. 2020

Sensors

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“…5-4.5 In the present article, we focus on low-cost solutions in the low end of THz presenting three different detectors in W-band, which have been designed and measured. VDI ZBD device's circuit models obtained using the procedures described in [24] and particularly in [25] have been employed for the simulations. One of the designs uses a SOTA resistor, which requires careful modeling because W band is well beyond the commercially specified band.…”

Section: Referencementioning

confidence: 99%

“…The following circuit model ( Figure 1) obtained using the procedures exhaustively described in [24,25] have been employed for the simulations with the ZBD. The resulting model parameters are listed in Table 2.…”

Section: Zbd and Discrete Resistance Modelingmentioning

confidence: 99%

Comparison of Microstrip W-Band Detectors Based on Zero Bias Schottky-Diodes

Gutiérrez¹,

Zeljami

Pascual

et al. 2019

Electronics

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This paper presents and discusses three different low-cost microstrip implementations of Schottky-diode detectors in W Band, based on the use of the Zero Bias Diode (ZBD) from VDI (Virginia Diodes, Charlottesville, VA, USA). Designs are based on a previous work of modeling of the ZBD diode. Designs also feature low-cost, easy-to-use tooling substrates (RT Duroid 5880, 5 mils thickness) and even low-cost discrete SMD components such as SOTA resistances (State Of The Art TM miniaturized surface mount resistors), which are modeled to be used well above commercial frequency margins. Intensive use of 3D EM simulation tools such as HFSS TM is done to support microstrip board modeling. Measurements of the three designs fabricated are compared to simulations and discussed.

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“…Amplitude modulation (AM) and phase modulation (PM) noises have always been important concerns in radio communication, radar, radiometry, or RF and microwave particle acceleration, among other applications (see, for instance, [1][2][3][4][5][6][7][8][9][10]). The study of AM and PM noise is a useful diagnostic tool for device technology optimization and aging studies [11].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study of AM and PM Noise in Cascaded Amplifiers

Badillo

Portilla

2022

Electronics

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An experimental study of amplitude modulation (AM) and phase modulation (PM) noise spectra in cascaded amplifiers was carried out as a function of the number of amplification stages and the input power. Flicker and white noise contributions were determined, as well as effective noise figure (NF) from AM and PM noise spectra from small-signal to large-signal regimes. Simultaneous measurements of AM and PM noise were performed, and associated correlation was measured as a function of the offset frequency from the carrier. Measurements exhibited, in general, quite low AM–PM correlation levels both in the flicker and white noise parts of the spectrum. In some particular amplifier configurations, however, measurements showed some peaks in the correlation at some specific input power levels in the transition zone, from a quasi-linear to strong compression. The results show that the effective noise figure decreases with the number of stages for a given carrier output power level.

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Accurately Modeling of Zero Biased Schottky-Diodes at Millimeter-Wave Frequencies

Cited by 11 publications

References 19 publications

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Design of a Multipurpose Photonic Chip Architecture for THz Dual-Comb Spectrometers

Comparison of Microstrip W-Band Detectors Based on Zero Bias Schottky-Diodes

Experimental Study of AM and PM Noise in Cascaded Amplifiers

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