A technique to increase transistor gain using metamaterial electrodes

Description:

Technology #20-05

 

 

For the transistors operating at high frequency bands, the concept of wave propagation or distributed effects are dominant in the device operations. This imposes a phase velocity mismatch on the input and output electrodes of the device, which reduces the gain and output power of the transistor. The mentioned limitation prevents fabrication of wider devices and utilizing discontinuities and interconnects for achieving higher gain values is inevitable. A novel design technique is proposed here, where the electrodes of the transistor are rearranged using metamaterials to ensure the matching of phase velocities at the input and output ports. It is proved that at high operating frequency ranges and for wider devices, the transistors with rearranged electrode configuration yield 2-3 times higher gains compared to normal devices.

 

Application(s) / Product(s) / Service(s):

 

• Military communications

• Radars

• Satellite communications and point to point radio

• Telecommunications

• Data link

• Broadband amplifiers

Advantage(s):

 

The main advantage of this idea is that its fabrication procedure for this technique is very similar to normal devices and there is no need to change the pertaining machinery. Additionally, 2-3 times higher gains are obtained using a single transistor device fabricated based on this method.

 

Technology:

 

A novel design technique is proposed here, where the electrodes of the transistor are rearranged using metamaterials to ensure the matching of phase velocities at the input and output ports. For a device width of 300 µm working at 60 GHz, the current gain of the proposed transistor is compared with the typical model and a 130% increase is observed.

 

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This invention/technology is available for licensing.

For interested parties seeking further information, feel free to contact:

Mark Allen Lanoue

Technology Manager / Tech Ventures

University of Arkansas

(479) 575-7243

malanoue@uark.edu  

 

 

Patent Information:
For Information, Contact:
Mark Lanoue
Technology Manager
University of Arkansas
479-575-7243
malanoue@uark.edu
Inventors:
Amirreza Ghadimi-Avval
Samir El-Ghazaly
Keywords:
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