EP 0124441 A1 19841107 - Tuned-loop antenna with band switching.
Title (en)
Tuned-loop antenna with band switching.
Title (de)
Abgestimmte Rahmenantenne mit umschaltbarem Frequenzbereich.
Title (fr)
Antenne boucle accordée à commutation de gammes.
Publication
Application
Priority
FR 8306948 A 19830427
Abstract (en)
[origin: US4617571A] The invention relates to a loop antenna tuned by means of a variable capacitor. The antenna includes, in parallel with the variable capacitor (4), a switchable state variable inductor (11). The invention is particularly applicable to antennas for HF radio links at powers of up to 1 kW.
Abstract (fr)
L'antenne comporte, en parallèle au condensateur variable (4) une self (11) à état de commutation variable. Application notamment aux antennes destinées aux liaisons dans la gamme HF avec une puissance pouvant atteindre 1 kW.
IPC 1-7
IPC 8 full level
H01Q 7/00 (2006.01)
CPC (source: EP US)
H01Q 7/005 (2013.01 - EP US)
Citation (search report)
- [X] US 4339827 A 19820713 - TORRES RAFAEL, et al
- [X] FR 1449055 A 19660812 - CSF
- [A] US 3680127 A 19720725 - RICHARD DAVID J
- [A] US 3956751 A 19760511 - HERMAN JULIUS
- [AD] US 3588905 A 19710628 - DUNLAVY JOHN H JR
- [A] GB 436908 A 19351021 - COLE E K LTD, et al
- [A] US 3447159 A 19690527 - STROMSWOLD CHESTER
Designated contracting state (EPC)
DE GB NL
DOCDB simple family (publication)
EP 0124441 A1 19841107; EP 0124441 B1 19900110; DE 3481029 D1 19900215; FR 2545279 A1 19841102; FR 2545279 B1 19860314; US 4617571 A 19861014
DOCDB simple family (application)
EP 84400850 A 19840426; DE 3481029 T 19840426; FR 8306948 A 19830427; US 60347284 A 19840424