Harmonic circuit for improving linearity
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 5, 2006
Grant Date -
Oct 7, 2004
app pub date -
Jan 24, 2003
filing date -
Jul 25, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The present invention relates to a harmonic circuit for improving linearity, the harmonic circuit according to the present invention comprises a first terminal connected to a collector of a NPN transistor and a second terminal connected to an emitter of the NPN transistor, and removes inter-modulation noise from the signal appeared at the collector of the NPN transistor. The harmonic circuit includes a PNP transistor, a first resistor, and a second resistor. The PNP transistor generates harmonic components without affecting the main signal, and the harmonic components that are generated by the PNP transistor compensate the harmonic components that are generated by the NPN transistor by having load of different sign from the load of the harmonic components that are generated by the NPN transistor. In addition, the harmonic circuit further includes a phase shifter to compensate the phase distortion that is generated from non-linear devices, and it can reduce the inter-modulation noise more minutely by implementing the PNP transistor using a plurality of Darlington-connected PNP transistors.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully