Graphene RF Transistor Performance

2019 ◽  
Vol 28 (5) ◽  
pp. 3-13 ◽  
Author(s):  
Keith A. Jenkins ◽  
Yu-ming Lin ◽  
Damon Farmer ◽  
Christos Dimitrakopoulos ◽  
Hsin-Ying Chiu ◽  
...  
Keyword(s):  
Rf Transistor

Simulation of Power RF GaN Transistors Thermal Parameters in Pulse Mode

2021 ◽  
Vol 23 (4) ◽  
pp. 179-185
Author(s):  
A.I. Khlybov ◽  
◽  
D.V. Rodionov ◽  
A.I. Panteleev ◽  
P.V. Timoshenkov ◽  
...  
Keyword(s):  
Computer Simulation ◽  
Computational Complexity ◽  
Duty Cycle ◽  
Pulse Width ◽  
Thermal Process ◽  
Pulse Mode ◽  
Thermal Mode ◽  
Transistor Channel ◽  
Channel Temperature ◽  
Rf Transistor

This paper contains research results of thermal process in power GaN RF transistor in silicon substrate for pulse mode. Thermal mode research was done using computer simulation. Authors developed methodic allows significant decrease computational complexity. The dependences of maximum transistor channel temperature and thermal resistance as function of pulse width (with constant duty cycle) were done. Thermal simulation was done for power GaN RF transistor with overall gate width 2.1 mm.

Diamond RF Transistor Technology with ft=41 GHz and fmax=44 GHz

2018 ◽  
Author(s):  
Tony G. Ivanov ◽  
James Weil ◽  
Pankaj B. Shah ◽  
A. Glen Birdwell ◽  
Khamsouk Kingkeo ◽  
...  
Keyword(s):  
Rf Transistor

Experimental Measurement and Analysis of Pulse Transmission Source of GPR

2012 ◽  
Vol 503-504 ◽  
pp. 1365-1368
Author(s):  
Hui Xu ◽  
Guo Rui Wu
Keyword(s):  
Experimental Measurement ◽  
Pulse Width ◽  
Duty Ratio ◽  
Trigger Pulse ◽  
Actual Measurement ◽  
The Core ◽  
Pulse Transmission ◽  
Shallow Soil ◽  
Measurement And Analysis ◽  
Rf Transistor

According to the transmission pulse requirements of the impulse-GPR which probes the objectives of shallow soil, a transmission circuit is designed and made. On the basis of the transistor avalanche theory, avalanche transistor and RF transistor are used to generate the impulse-GPR transmission pulse as the core transistors. Trigger pulse is the square wave which is produced by FPGA as the trigger of whole system, its duty ratio under 10% and its frequency from 50 kHz to 500 kHz. As the results of simulation and actual measurement shown, single transistor avalanche circuit and four transistors cascade avalanche circuit can produce a narrow pulse with its pulse width from 1.337ns to 42.91ns. The results meet the transmission pulse requirements of impulse-GPR which probes the objectives of shallow soil.

RF Transistor Fundamentals

1993 ◽  
pp. 31-40
Author(s):  
Norm Dye ◽  
Helge Granberg
Keyword(s):  
Rf Transistor

scholarly journals LIMITER CONTROL OF A CHAOTIC RF TRANSISTOR OSCILLATOR

2003 ◽  
Vol 13 (04) ◽  
pp. 957-961 ◽  
Author(s):  
NED J. CORRON ◽  
BUCKLEY A. HOPPER ◽  
SHAWN D. PETHEL
Keyword(s):  
Periodic Orbit ◽  
Local Minimum ◽  
Chaos Control ◽  
Electronic Circuit ◽  
Relative Magnitude ◽  
Control Of Chaos ◽  
Experimental Control ◽  
Transistor Oscillator ◽  
Rf Transistor ◽  
Uncontrolled System

We report experimental control of chaos in an electronic circuit at 43.9 MHz, which is the fastest chaos control reported in the literature to date. Limiter control is used to stabilize a periodic orbit in a tuned collector transistor oscillator modified to exhibit simply folded band chaos. The limiter is implemented using a transistor to enable monitoring the relative magnitude of the control perturbation. A plot of the relative control magnitude versus limiter level shows a local minimum at period-1 control, thereby providing strong evidence that the controlled state is an unstable periodic orbit (UPO) of the uncontrolled system.

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