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Broadband 20-\Omega 20-W Load Suitable for Characterization of Switch-Mode Amplifiers.
- Source :
-
IEEE Transactions on Instrumentation & Measurement . Sep2010, Vol. 59 Issue 9, p2431-2436. 6p. 5 Color Photographs, 1 Graph. - Publication Year :
- 2010
-
Abstract
- This paper reports on a broadband dc ground isolated 20-Ω absorber for powers of up to 20 W. The realized absorber achieves reflections (referenced to 20Ω) below-10 dB over almost two frequency decades from less than 50 MHz to 2 GHz. It can be used as load resistor in the characterization of power amplifiers, particularly switch-mode ones, where broadband non- 50-Ω loads are required for measurement purposes. An additional advantage is that no bias-T is needed with this solution. This reduces measurement uncertainties due to the parasitics of the bias-T. Using the distributed concept offers a generic technique to realize such loads and also for other impedance values and other applications. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189456
- Volume :
- 59
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Instrumentation & Measurement
- Publication Type :
- Academic Journal
- Accession number :
- 52928647
- Full Text :
- https://doi.org/10.1109/TIM.2009.2034580