Modeling of an uncooled CMOS THz thermal detector with frequency‐selective cross‐dipole antenna and NMOS temperature sensor

Abstract

form of traces by LabVIEW-based multi-shot FROG diagnostic system. compressed pulses results in the FWHM of 150 and 270 fs, respectively, with comparatively small temporal phase variations. We have also successfully acquired the grating detuned data in the form of single trace. The real profile of pulse which obtained from the femtosecond laser system retrieved by using FROG retrieval software validates the consistency of the LabVIEW-based FROG measured and retrieved data. ORCIDM. Hussain http://orcid.org/0000-0003-3142-9945

Uncooled antenna‐coupled terahertz thermal detector using CMOS process

“…The proposed detector provides higher responsivity than the thermal detectors consisting of an antenna coupled with two different types of sensors: NMOS and basic PTAT sensor in Refs. 11 and 13. Although the designed detector has poor performances than the thermal detector in Ref.…”

“…Common detectors include semiconductor detectors, such as Schottky barrier diodes, 6 field effect transistors, 7 and high electron mobility transistors, 8 as well as thermal detectors, such as pyroelectric sensors, 9 resistive bolometers, 10 and CMOS thermal detectors. 11 In addition, there has been a strong desire to develop CMOS fully integrated thermal detectors which could operate at room temperature and allows radiation to be detected on a wide spectrum, presenting a promising candidate for uncooled, low-cost, high-yield, and easy-integration THz detectors. 12,13 Over the last decade, many efforts have been made to develop preferable CMOS fully integrated THz thermal detectors by adopting proper absorbing structures coupled to suitable temperature sensors.…”

“…In order to further develop these THz applications into everyday life, widely accessible THz detectors which are key component of THz systems are required to meet the requirement of uncooled, compact, low‐cost, and mass‐production. Common detectors include semiconductor detectors, such as Schottky barrier diodes, 6 field effect transistors, 7 and high electron mobility transistors, 8 as well as thermal detectors, such as pyroelectric sensors, 9 resistive bolometers, 10 and CMOS thermal detectors 11 . In addition, there has been a strong desire to develop CMOS fully integrated thermal detectors which could operate at room temperature and allows radiation to be detected on a wide spectrum, presenting a promising candidate for uncooled, low‐cost, high‐yield, and easy‐integration THz detectors 12,13 .…”

Uncooled CMOS fully integrated antenna‐coupled terahertz thermal detector

“…It can be seen that the thermal detector with a vanadium oxide (VOx) sensor achieves the highest responsivity, while it dramatically increases the fabrication complexity and the production cost due to the additional processing step [8]. The proposed detector has considerably higher TCV D and responsivity than the thermal detector composed of an antenna and an N‐type MOS (NMOS) temperature sensor [16]. Although the presented detector has a similar configuration with the detector in [11], it significantly improved the characterisation results of the detector.…”

Design of miniaturised on‐chip slot antenna for THz detector in CMOS

“…As the antenna proposed in [19], its operating frequency is 340 GHz with the inner radius is 108.62 μm, while the gain is only 1.68 dB before using the silicon lens, the side lobes are too much, which bring a large radiation loss. Dipole antenna is also commonly used in THz detector design [20,21], but the size of the antenna is large and the gain is low. As the antenna shown in [20], the operating frequency of the antenna is 365 GHz while the size is 330 × 330 μm 2 .…”