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Canadian application, no grantCanada

Asymmetrically biased high linearity balanced amplifier

CA 2389456 A1 · Owner: Northrop Grumman Space & Mission Systems Corp. · Inventors: Kobayashi, Kevin W.

CIPO record

Overview

Drawings and full text

Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A microwave amplifier and more particularly to a microwave amplifier configured as a, Doherty amplifier. In particular the amplifier includes a carrier amplifier a peak amplifier a, Large coupler at the input of the amplifiers and quarter wave amplifier at the output of the, amplifiers. In order to improve isolation between the amplifiers to minimize the dependence of, each amplifier's inter-modulation (IM) performance on the others matching , networks are, provided, coupled to the output of the amplifiers. In addition the microwave , power amplifier, includes electronic tuning which allows for improved inter-modulation distortion over a wide, input power dynamic range which allows the …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed June 6, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 6, 2022.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 6, 2024.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 6, 2002
GrantedNo grant recorded
Term endedJune 6, 2022
Patent numberCA 2389456 A1
Classification (IPC)H03F3/18 +2 more

Timeline

Timeline From CIPO dates

2003200520072009201120132015201720192021Application filedJune 6, 2002Term endedJune 6, 2022

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.