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1. (EP2203974) INPUT CIRCUITRY FOR TRANSISTOR POWER AMPLIFIER AND METHOD FOR DESIGNING SUCH CIRCUITRY

Office : European Patent Office
Application Number: 08796359 Application Date: 21.07.2008
Publication Number: 2203974 Publication Date: 07.07.2010
Publication Kind : B1
Designated States: AL,AT,BA,BE,BG,CH,CY,CZ,DE,DK,EE,ES,FI,FR,GB,GR,HR,HU,IE,IS,IT,LI,LT,LU,LV,MC,MK,MT,NL,NO,PL,PT,RO,RS,SE,SI,SK,TR
Prior PCT appl.: Application Number:US2008070622 ; Publication Number: Click to see the data
IPC:
H03F 1/56
H03F 3/19
H03F 3/193
H03H 7/38
H03H 11/28
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
1
Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
56
Modifications of input or output impedances, not otherwise provided for
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189
High-frequency amplifiers, e.g. radio frequency amplifiers
19
with semiconductor devices only
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
F
AMPLIFIERS
3
Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
189
High-frequency amplifiers, e.g. radio frequency amplifiers
19
with semiconductor devices only
193
with field-effect devices
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
7
Multiple-port networks comprising only passive electrical elements as network components
38
Impedance-matching networks
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
H
IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
11
Networks using active elements
02
Multiple-port networks
28
Impedance matching networks
CPC:
H03F 1/565
H03F 3/1935
H03F 2200/222
H03F 2200/228
H03F 2200/249
H03F 2200/252
H03F 2200/451
H03F 2200/99
H03H 7/38
Applicants: RAYTHEON CO
Inventors: TREMBLAY JOHN C
WHELAN COLIN S
MALLAVARPU RAGHU
TYNACH MATTHEW
Priority Data: 2008070622 21.07.2008 US
85142507 07.09.2007 US
Title: (DE) EINGANGSSCHALTKREISE FÜR EINEN TRANSISTORLEISTUNGSVERSTÄRKER UND VERFAHREN ZUM ENTWURF SOLCHER SCHALTKREISE
(EN) INPUT CIRCUITRY FOR TRANSISTOR POWER AMPLIFIER AND METHOD FOR DESIGNING SUCH CIRCUITRY
(FR) CIRCUIT D'ENTRÉE POUR UN AMPLIFICATEUR ET PROCÉDÉ DE CONCEPTION ASSOCIÉ
Abstract: front page image
(EN) A circuit having: an input matching network, a transistor (14) coupled to an output of the input matching network; and wherein the input matching network (12) has a first input impedance when such input matching network (12) is fed with an input signal having a relatively low power level and wherein the input matching network (12) has an input impedance different from the first input impedance when such input matching network (12) is fed with an input signal having a relatively high power level.
(FR) L'invention concerne un circuit comprenant: un réseau d'adaptation d'entrée, un transistor (14) couplé à une sortie du réseau d'adaptation d'entrée; et le réseau d'adaptation d'entrée (12) présentant une première impédance d'entrée, lorsque celui-ci est alimenté par un signal d'entrée présentant un faible niveau de puissance. Le réseau d'adaptation d'entrée (12) présente une impédance d'entrée différente de la première impédance d'entrée, lorsqu'il est alimenté par un signal présentant un niveau de puissance relativement élevé.
Also published as:
KR1020100063767CN101796720IN887/KOLNP/2010WO/2009/035767