|Title of host publication||IEEE 11th Annual Wireless and Microwave Technology Conference 2010 (WAMICON), Melbourne, FL|
|Publisher or commissioning body||Institute of Electrical and Electronics Engineers (IEEE)|
|Publication date||Apr 2010|
|Pages||1 - 5|
|Number of pages||5|
|Conference||11th Annual Wireless and Microwave Technology Conference (WAMICON)|
|Period||1/04/10 → …|
Low-frequency, baseband effects in Power Amplifiers can become particularly important when steps are taken to improve operational efficiency through the application of `envelope' based approaches such as Envelope Elimination and Restoration (EER) and Envelope Tracking (ET). The aim of this paper is to demonstrate how a broadband modulated time-domain measurement system, when used in combination with active IF load-pull, can be employed to gain valuable insight into the behaviour of high-frequency power transistors whilst operating under modulated conditions. Also considered is the interesting idea of how PA linearity can be improved using the very mechanisms that are employed to improve efficiency.
Rose publication type: Conference contribution
Sponsorship: This work has been carried out as part of EPSRC grant EP1F033702/I. The authors would also like to thank CREE for supporting this activity and supplying the devices; specifically Ray Pengelly, Dr. Chris Harris and Mr. Simon Wood.
This material is posted here with permission of the IEEE. Such permission of the IEEE does not in any way imply IEEE endorsement of any of the University of Bristol's products or services. Internal or personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution must be obtained from the IEEE by writing to firstname.lastname@example.org.
By choosing to view this document, you agree to all provisions of the copyright laws protecting it.
- amplifier distortion, amplifier linearity, amplifier efficiency, modulation, power amplifier
11th Annual Wireless and Microwave Technology Conference (WAMICON)
|Duration||1 Apr 2010 → …|