Last edited by Faunris
Sunday, July 19, 2020 | History

1 edition of Schottky clamped MOS transistors for wireless CMOS radio frequency switch applications found in the catalog.

Schottky clamped MOS transistors for wireless CMOS radio frequency switch applications

by Feng-Jung Huang

  • 187 Want to read
  • 10 Currently reading

Published .
Written in English

    Subjects:
  • Complementary Metal oxide semiconductors,
  • Semiconductor switches,
  • Radio frequency,
  • Switching circuits,
  • Design and construction

  • Edition Notes

    Statementby Feng-Jung Huang
    The Physical Object
    Paginationix, 158 leaves :
    Number of Pages158
    ID Numbers
    Open LibraryOL25906342M
    OCLC/WorldCa47291806

      We report on the gigahertz radio frequency (RF) performance of chemical vapor deposited (CVD) monolayer MoS2 field-effect transistors (FETs). Initial DC characterizations of fabricated MoS2 FETs yielded current densities exceeding μA/μm and maximum transconductance of 38 μS/μm. A contact resistance corrected low-field mobility of 55 cm2/(V s) was achieved. As in other applications, the low voltage drop of the Schottky diode is particularly useful, and as a result they are the favoured form of diode in this application. Clamp diode: Schottky barrier diodes may also be used as a clamp diode in a transistor circuit to speed the operation when used as a switch. Years ago they found widespread use in.

    This paper presents a wireless humidity sensor tag for low-cost and low-power applications. The proposed humidity sensor tag, based on radio frequency identification (RFID) technology, was fabricated in a standard μm complementary metal oxide semiconductor (CMOS) process. The top metal layer was deposited to form the interdigitated electrodes, which were then filled with .   Hello all-I need help understanding how a Schottky voltage clamping circuit works. Specifically, I have a 5V microcontroller that will be sending a serial stream to a V device.(the "1's" in the serial stream need to be at V when they arrive at the V device) From what I have read, a Schottky clamping circuit would be the best option because of the recovery speed of those diodes.

    • Wireless powered technologies as Radio Frequency Identification are getting more and more popular. • Switch mode power converters are constantly miniaturized. The passive components can only be made smaller by choosing a higher operating frequency – which nowadays reaches the RF area.   Various strategies and mechanisms have been suggested for investigating a Schottky contact behavior in molybdenum disulfide (MoS2) thin-film transistor (TFT), which are still in much debate and controversy. As one of promising breakthrough for transparent electronics with a high device performance, we have realized MoS2 TFTs with source/drain electrodes consisting of transparent bi .


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Schottky clamped MOS transistors for wireless CMOS radio frequency switch applications by Feng-Jung Huang Download PDF EPUB FB2

Schottky clamped MOS transistors for wireless CMOS radio frequency switch applications for wireless CMOS radio frequency switch applications, ". Schottky Clamped MOS Transistors for Wireless CMOS Radio Frequency Switch Applications.

was implemented using μm complementary metal-oxide semiconductor technology. Targeting applications in the 1 to MHz frequency range, our RF DMOS transistors feature high peak power (up to kW) and high ruggedness capability (infinite:1 VSWR).

Based on an optimized process layout resulting in improved RF performance, ST’s RF DMOS transistors are ideal for. With the CMOS Schottky barrier diodes, it should be possible to implement frequency doublers operating above GHz. Using a shunt p-n diode and shunt NMOS transistors in the nm CMOS technology, a single-pole-double-throw transmit/receive (T/R) switch operating at 57~66 GHz frequency band has been successfully demonstrated.

Accurate modeling and efficient parameter extraction of a small signal equivalent circuit of MOS transistors for high-frequency operation are presented. The small-signal equivalent circuit is based on the quasi-static approximation which was found to be adequate up to 10 GHz for MOS transistors fabricated by a 20 GHz cutoff frequency by: 4.

Until recently, silicon-based Schottky barrier rectifiers were limited to operating voltages below V for most applications. However, the trend in high-frequency applications has been toward s greater power consumption, requiring higher reverse bias voltages ( V and above) for higher-output adapters.

In consumer electronics, there has. The Schottky Barrier (SB) MOSFET is one such device. It consists of metallic silicide source and drain contacts and a standard MOS gate.

Previously, simulations have indicated that these transistors will have superior scaling properties and be more cost effective to fabricate than conventional transistors when channel lengths are scaled below. MOS Transistor (Metal-Oxide-Semiconductor) NMOS Transistor Gate OxideGate Oxide Field Oxide CROSS-SECTION of NMOS Transistor.

Cross-Section of CMOS Technology. MOS transistors - types and symbols D D G G S NMOS Enhancement S NMOS Depletion D D G G B S S PMOS Enhancement NMOS ith B lk C t tNMOS with Bulk Contact. Schottky diode can switch on and off much faster than the p-n junction diode. Also, the schottky diode produces less unwanted noise than p-n junction diode.

These two characteristics of the schottky diode make it very useful in high-speed switching power circuits. There are various semiconductor technologies available for radio frequency applications.

GaAs and silicon CMOS, BiCMOS and bipolar technologies are the most widely used technologies nowadays. In traditional RF circuits, GaAs, bipolar and ceramic SAW filters were used for the RF section, bipolar for the IF section and CMOS for base band.

The MOSFET (metal-oxide-semiconductor field-effect transistor, or MOS transistor) was invented by Mohamed M. Atalla and Dawon Kahng at Bell Labs in There were originally two types of MOSFET fabrication processes, PMOS (p-type MOS) and NMOS (n-type MOS).

Both types were developed by Atalla and Kahng when they originally invented the MOSFET, fabricating both PMOS and NMOS. Since the Schottky diode has a lower forward drop than the base-emitter junction, it will start to conduct current away from the base as the collector voltage drops below the difference between the base-emitter junction drop and the smaller Schottky diode forward drop, keeping the transistor from further turning on and saturating.

Products. DIOFET is a proprietary process that monolithically integrates a power MOSFET with a Schottky diode into a single Silicon chip. The integrated Schottky reduces the forward voltage drop of the body diode by almost 50% and also has a lower reverse recovery charge. are the radio frequency (RF) input, the local oscillator (LO) input, and the intermediate frequency (IF) output.

Figure The Mixing Process A mixer takes an RF input signal at a frequency fRF, mixes it with a LO signal at a frequency fLO, and produces an IF output signal that consists of the sum and difference frequencies, fRF ± fLO.

The switch circuit like a passive radio frequency identificati on system picks up an amplitudemodulated GHz carrier and converts it to DC to power up a portion of radio connected to a coin cell battery.

An RF clamp of wireless switch also limits the input power above ~12 dBm to protect the switch and transceiver. on chip antennas. MOS Transistor Qualitative Description Assume an n-channel (receives it’s name from the “type” of channel present when current is flowing) device with its source and substrate grounded (i.

e., V S =V B =0 V). For any value of V DS: •when V GS. The intrinsic cut-off frequency (f c) measures the intrinsic ability of a field effect transistor to amplify high frequency reported by Dambrine et al., 18 the f c values for HEMTs are approximately twice as high as for silicon MOSFETs with comparable gate length.

That difference is mainly related to the low carrier mobility for Si compared to III–V semiconductors. The technology combines Vertical Double Diffused MOS Power devices with their own temperature and current sensors and CMOS and HV components for Power-Analog-Mixed design.

In the latest configuration of the technology, TrenchFET Power Devices are integrated to provide a 35% reduction in the Ron resistance compared to the previous DMOS structures.

An integrated CMOS rectifier has a clear advantage over discrete Schottky diodes as MOS transistors can easily be scaled and have four terminals compared to two terminal diodes. This allows for a much more versatile design approach with many different topology and circuit techniques to design for the optimum rectifier input impedance.

SCHOTTKY BARRIER MOSFET DEVICE PHYSICS FOR CRYOGENIC APPLICATIONS Mike Schwarz, Laurie E. Calvet, effective mass of SB-MOS and improve transport by enhancing the tunneling transport ”Dual Metallic Source and Drain Integration on Planar Single and Double Gate SOI CMOS down to î ìnm: Performance and Scalability Assessment”, IEDM, í.

Basic MOS Transistors: MOSFET-Fundamentals. Our primary focus in this section would be on the most important semiconductor device in current technology and applications, namely the metal oxide semiconductor field effect transistor (MOSFET).

MOSFETs have several unique features which distinguish them from BJTs these are.The metal–oxide–semiconductor field-effect transistor (MOSFET, MOS-FET, or MOS FET), also known as the metal–oxide–silicon transistor (MOS transistor, or MOS), is a type of insulated-gate field-effect transistor (IGFET) that is fabricated by the controlled oxidation of a semiconductor, typically voltage of the covered gate determines the electrical conductivity of the.It was the primary goal (and result) of the presented work to empirically demonstrate CMOS operation (i.e., inverter transfer characteristics) using metallic/Schottky source/drain MOSFETs (SFETs - Schottky Field Effect Transistors) fabricated on silicon-on-insulator (SOI) substrates - a first-ever in the history of SFET research.

Due to its candidacy for present and future CMOS technology.