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A 400GHz 28nm TX & RX with Chip-to-Waveguide Transitions used in Fully Integrated Lensless Imaging System
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper presents a 400 GHz CMOS TX and RX chip with two different chip-to-waveguide transitions. A first design is based on a coupled microstrip to waveguide coupler and is integrated together...

MODFETs soar to 400 GHz
1991 Edition, Volume 7, November 1, 1991 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

The operation of MODFETs (modulation-doped FETs) is explained. These devices now have switching delays under 5 ps, current-gain cutoff frequencies of about 250 GHz, and maximum oscillation frequencies in excess of 400 GHz. They also perform frequency division up to 26 GHz....

A 400-GHz Graphene FET Detector
Volume PP - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This letter presents a graphene field effect transistor (GFET) detector at 400 GHz, with a maximum measured optical responsivity of 74 V/W, and a minimum noise-equivalent power of 130 pW/Hz1/2. This letter shows how the detector performance degrades as a function...

60 Gbit/s 400 GHz wireless transmission
2015 Edition, September 1, 2015 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We experimentally demonstrate a 400 GHz carrier wireless transmission system with real-time capable detection and demonstrate transmission of a 60 Gbit/s signal derived from optical Nyquist channels in a 12.5 GHz ultra-dense wavelength division multiplexing...

400-GHz Continuous-Wave Clinotron Oscillator
2013 Edition, Volume 41, January 1, 2013 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Experimental results of a 400-GHz clinotron, which is a modification of the backward-wave oscillator, are presented. Development of grating, focusing magnetic system, and electron gun is shown. The clinotron tube is designed to use a high-perveance electron...

A Superhetrodyne Receiver from 350 - 400 GHz
1978 Edition, September 1, 1978 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

A superhetrodyne receiver operating in the frequenCY range 350 - 400 GHz has been constructed. The mixer consists of a low capacitance GaAs Schottky barrier diode, contacted by means of an ultra small inductance spring, mounted across a reduced height waveguide...

A heterodyne graphene FET detector at 400 GHz
2017 Edition, August 1, 2017 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We present a THz heterodyne detector based on a single layer graphene field effect transistor (GFET) integrated with a bowtie antenna at 400 GHz. The heterodyne detection is achieved by coupling RF and LO signals quasi-optically to the same GFET. The down...

Development of CW clinotron oscillator at 400 GHz
2012 Edition, August 1, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

Backward Wave Oscillators are the most established vacuum electronic devices for THz and near-THz applications. The most powerful of these VEDs are BWO-clinotrons. Design process of 400 GHz Clinotron and its magnetic focusing system using 3D and 2D electromagnetic computer codes is...

Vertical profile optimization for +400 GHz fMAX Si/SiGe:C HBTs
2010 Edition, October 1, 2010 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

This paper summarizes the work carried out on the vertical profile of double-polysilicon SiGe:C HBTs to get f MAX above 400 GHz. The effects of the final spike annealing temperature, the emitter doping species, the base and collector doping levels and the Si capping layer thickness are...

Electromagnetic attenuation due to water vapor measured at 400 GHz
2012 Edition, April 1, 2012 - IEEE - Institute of Electrical and Electronics Engineers, Inc.

We present experimentally measured electromagnetic attenuation losses due to water vapor at 400 GHz. The measurements are made using a hermetically sealed high-Q quasi-optical resonator system, which allows for control of water vapor levels. We compare our measurements...

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