EP 0815613 A1 19980107 - DUAL FREQUENCY ANTENNA WITH INTEGRAL DIPLEXER
Title (en)
DUAL FREQUENCY ANTENNA WITH INTEGRAL DIPLEXER
Title (de)
DOPPELFREQUENZANTENNE MIT INTEGRIETEM DIPLEXER
Title (fr)
ANTENNE A DEUX FREQUENCES AVEC DIPLEXEUR INTEGRE
Publication
Application
Priority
- US 9602637 W 19960311
- US 40656595 A 19950320
Abstract (en)
[origin: WO9629756A1] A dual frequency communication system utilizes an antenna (100) and a diplexer (102) for operating at a first frequency and a second, preferably widely separated, lower frequency. The antenna is preferably a loop antenna (100) and the diplexer (102) including both capacitative (104, 106, 108) and inductive (110, 112) elements provides an impedance match at both the first and second operating frequencies as well as combines both signals such that a single coaxial cable may be used with the antenna. In a preferred embodiment, the antenna is fabricated on a standard printed circuit board using a standard printed circuit board fabrication process. The passive electrical elements of the diplexer are also fabricated on the same board, thereby resulting in an integrated planar dual frequency antenna system.
IPC 1-7
IPC 8 full level
H01Q 21/30 (2006.01); H01Q 1/38 (2006.01); H01Q 1/50 (2006.01); H01Q 5/00 (2006.01); H01Q 5/10 (2015.01); H01Q 5/335 (2015.01); H01Q 7/00 (2006.01); H01Q 23/00 (2006.01); H03H 7/38 (2006.01); H04B 1/40 (2006.01)
CPC (source: EP KR)
H01Q 5/00 (2013.01 - KR); H01Q 5/335 (2015.01 - EP); H01Q 7/00 (2013.01 - EP); H03H 7/38 (2013.01 - KR); H03H 7/383 (2013.01 - EP)
Citation (search report)
See references of WO 9629756A1
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
WO 9629756 A1 19960926; AU 5174896 A 19961008; AU 696840 B2 19980917; BR 9607695 A 19980707; CA 2213848 A1 19960926; EP 0815613 A1 19980107; JP H11502386 A 19990223; KR 19980702904 A 19980905
DOCDB simple family (application)
US 9602637 W 19960311; AU 5174896 A 19960311; BR 9607695 A 19960311; CA 2213848 A 19960311; EP 96908536 A 19960311; JP 52842796 A 19960311; KR 19970706312 A 19970910