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The Design of a 100 W, X-Band GaN PA Module

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5/7/14 to 5/7/14

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Innovations in EDA Webcast Series

Title:  The Design of a 100 W, X-Band GaN PA Module

Date:  May 7, 2014

Sponsored by: Agilent Technologies and Cree Inc.

Presented by: Liam Devlin, CEO, Plextek RF Integration

Why this webcast is important:
GaN transistors have proven capability for the realization of high power Solid State Power Amplifiers (SSPAs). At lower RF frequencies, unmatched packaged transistors can be used, but, as operating frequency and output power increases, pre-matched transistors or MMIC amplifiers are a more practical solution.

This webcast presents the design of a 100 W X-band PA using bare die discrete GaN transistors from Cree. This approach is a useful alternative to using pre-matched transistors or MMICs. It allows the implementation of a compact, high power design using Commercial Off The Shelf (COTS) transistors.

The webcast will cover the following:

  • Modeling the individual power transistor
  • Top level topology for the 100W design
  • Detailed design of matching structures
  • Design of the gate and drain bias feeds
  • Ensuring amplifier stability
  • Optimising for output power
  • Design of driver stage
  • Simulation of the complete amplifier

Who should attend:
Developers of high power solid-state PAs or systems houses who make use of high power solid-state PAs.

Presenter Info:
Liam is the CEO of Plextek RF Integration, a UK based design house specialising in the design and development of RFICs, MMICs and microwave/mm-wave modules . He has led the design and development of over 70 custom ICs on a range of GaAs, GaN and Si processes at frequencies up to 90 GHz. He has also developed microwave and mm-wave sub-systems using a variety of technologies. He was previously Chief Designer with Marconi Caswell where he designed GaAs ICs for both the commercial product line and for customer specific applications. Prior to this, Liam was employed by Philips Research Laboratories. He graduated from Leeds University in 1988 with a first class honours degree in electrical and electronic engineering and has published over 40 technical papers.

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