Nova Patents
FI972005A

Linear power amplifying device and method

Abstract

An arrangement for linearizing an amplifier by a combination of two methods is described. In the first a predistorter 213 supplies harmonics to the main amplifier 214 in such a way as to counteract the distortion. In the second a feedforward arrangement subtracts in 219 a signal derived from the input of the main amplifier from a signal derived from the output to produce a distortion signal which is then subtracted from the main amplifier output to remove remaining distortion. The arrangement may be used in multi-carrier amplification.

Term

Term ended

Projected expiry passed 12 May 2017, 9.4 years ago.

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29 members in 14 offices

This recordMember, by publication datePriority claim4 more offices are in the list below

Priority claims3

Priority claims
DocumentOfficeKindDate
19960051910Republic of KoreaA
19101996–––
KR19960051910–––

Members29

Family members, oldest first
DocumentOfficeKind
FI972005A0FinlandA0
SE9701760D0SwedenD0
KR970031238ARepublic of KoreaA
GB9709622D0United KingdomD0
CN1154600AChinaA
FI972005AThis recordFinlandA
SE9701760LSwedenL
GB2318938AUnited KingdomA
AU2014897AAustraliaA
FR2755551A1FranceA1
NL1006031A1Netherlands (Kingdom of the)A1
DE19720019A1GermanyA1
JPH10190361AJapanA
AU698665B2AustraliaB2
BR9703140ABrazilA
BR9703140ABrazilA
US5877653AUnited States of AmericaA
NL1006031C2Netherlands (Kingdom of the)C2
GB2318938BUnited KingdomB
KR100217416B1Republic of KoreaB1
RU2142670C1Russian FederationC1
FR2755551B1FranceB1
JP3260295B2JapanB2
CN1083172CChinaC
SE519812C2SwedenC2
IN192286BIndiaB
FI116339BFinlandB
DE19720019B4GermanyB4
BR9703140B1BrazilB1