Linearity vs. Q-factor of loads for RF amplifiers

Linearity vs. Q-factor of loads for RF amplifiers

This paper analyzes and verifies that RF amplifier linearity as well as gain depend significantly on the quality of the output matching components or the loads (especially the inductor). Two amplifiers with off‐ and on‐chip matching circuits are built and compared. Measurement results show that a dr...

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Veröffentlicht in:Microwave and optical technology letters 2003-05, Vol.37 (4), p.286-288
Hauptverfasser: Kim, Jin-pil, Park, Seong-su, Lee, Sang-gug
Format: Artikel
Sprache:eng
Schlagworte:
Bluetooth
driver amplifier
linearity
quality factor
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Zusammenfassung:This paper analyzes and verifies that RF amplifier linearity as well as gain depend significantly on the quality of the output matching components or the loads (especially the inductor). Two amplifiers with off‐ and on‐chip matching circuits are built and compared. Measurement results show that a driver amplifier with off‐chip reactive output matching provides better linearity and gain of 3.6 dB and 1.6 dB, respectively, as compared to that of the amplifier with on‐chip matching. The amplifiers are implemented for 2.4‐GHz operation based on 0.35‐μm CMOS technology. © 2003 Wiley Periodicals, Inc. Microwave Opt Technol Lett 37: 286–288, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10896
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.10896