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1. WO2006047294 - FREQUENCY TUNABLE LOW NOISE AMPLIFIER

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Publication Number WO/2006/047294
Publication Date 04.05.2006
International Application No. PCT/US2005/037913
International Filing Date 21.10.2005
Chapter 2 Demand Filed 22.08.2006
IPC
H03F 3/191 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189High-frequency amplifiers, e.g. radio frequency amplifiers
19with semiconductor devices only
191Tuned amplifiers
H03F 1/22 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
08Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
22by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively
H03J 3/18 2006.1
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
JTUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
3Continuous tuning
02Details
16Tuning without displacement of reactive element, e.g. by varying permeability
18by discharge tube or semiconductor device simulating variable reactance
CPC
H03F 1/22
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
08Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
22by use of cascode coupling, i.e. earthed cathode or emitter stage followed by earthed grid or base stage respectively
H03F 1/26
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
1Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
26Modifications of amplifiers to reduce influence of noise generated by amplifying elements
H03F 2200/111
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
111the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
H03F 2200/294
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
294the amplifier being a low noise amplifier [LNA]
H03F 2200/372
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
2200Indexing scheme relating to amplifiers
372Noise reduction and elimination in amplifier
H03F 3/191
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
FAMPLIFIERS
3Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189High frequency amplifiers, e.g. radio frequency amplifiers
19with semiconductor devices only
191Tuned amplifiers
Applicants
  • UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. [US]/[US] (AllExceptUS)
  • YIM, Seong-Mo [KR]/[US] (UsOnly)
  • O, Kenneth, Kyongyop [US]/[US] (UsOnly)
Inventors
  • YIM, Seong-Mo
  • O, Kenneth, Kyongyop
Agents
  • JETTER, Neil, R.
Priority Data
60/621,55022.10.2004US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) FREQUENCY TUNABLE LOW NOISE AMPLIFIER
(FR) AMPLIFICATEUR A FAIBLE BRUIT ACCORDABLE EN FREQUENCE
front page image
Abstract
(EN) A frequency tunable low noise amplifier 100 providing multi-band operation includes an amplifier 110 and a frequency tunable input matching network 130 including at least one varactor 141, 142 coupled to an input of the amplifier 110. The input network receives a signal from a signal source 160. The input matching network 130 includes a control input 171 for providing an impedance match to the source 160. A frequency tunable output matching network 140 includes at least one varactor 181, 182 coupled to an output of the amplifier 110. The output matching network 140 also includes a control input 191 for providing an impedance match to a load 195.
(FR) La présente invention concerne un amplificateur à faible bruit accordable en fréquence (100) fonctionnant sur des bandes multiples, qui comprend un amplificateur (110) et un réseau d'adaptation d'entrées accordable en fréquence (130) comprenant au moins un varactor (141, 142) couplé à une entrée de l'amplificateur (110). Le réseau d'entrée reçoit un signal d'une source de signal (160). Le réseau d'adaptation d'entrées (130) comprend une entrée de commande (171) destinée à adapter l'impédance à la source (160). Un réseau d'adaptation de sorties accordable en fréquence (140) comprend au moins un varactor (181, 182) couplé à une sortie de l'amplificateur (110). Ce réseau d'adaptation de sortie (140) comprend aussi une entrée de commande (191) permettant d'adapter une impédance à une charge (195).
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