Now showing items 1-10 of 21
Measured thermal images of a Gallium arsenide power mmic with and without RF applied to the input
A gallium arsenide microwave monolithic integrated circuit (MMIC) power amplifier (M/ACom type MAAM71100) has been measured using infra-red microscope technology, with and without the application of a RF input signal. A ...
Measurement of unity gain cutoff frequency and saturation velocity of a GaN HEMT transistor
The measured intrinsic saturation velocity (vsi) of carriers in a gallium nitride (GaN) high electron mobility transistor (HEMT) is very much lower than that predicted using Monte Carlo simulation. A novel method of ...
High-performance scalable bidirectional mixed radix-2n serial-serial multipliers
Two new high-performance bidirectional mixed radix-2n serial-serial multipliers are presented. The new designs have improved the area-time performance by ~31% when compared with existing radix-2n serial-serial multipliers. ...
Link stability and mobility in ad hoc networks
(Institute of Engineering and Technology, 2007-04-01)
The fact that ad hoc networks are required to support mobility of individual network nodes results in problems arising when routing data. These problems include route loss, poor longevity of established routes and asymmetric ...
Radix-2n serial-serial multipliers
Reducing the peak-to-average power ratio using turbo coding
The effect of transparency within a semiconductor on emissivity mapping for thermal profile measurements of a semiconductor
The paper reports on infra-red (IR) measurements made on silicon and gallium arsenide substrates which are transparent to IR radiation. The work showed that the measured emissivity is dependent on the wafer back-face ...
Orthogonal wavelet division multiplex: an alternative to OFDM
Analysis and modelling of structured wiring communication channels
The authors present equations for the calculation of the attenuation constant of both unshielded and shielded cables as a function of cable dimension, material parameters and frequency of operation. An analytical approach ...