| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_4ddcb273a108a5d8472b335280098e06 |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01P1-215
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01P1-218 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H03H2-00 |
| filingDate |
1992-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_25c74ca6a3c538a8c834569bd81f4266 |
| publicationDate |
1993-08-19-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
DE-4204299-A1 |
| titleOfInvention |
COUPLER |
| abstract |
An input port (1) and a bidirectional port (2) are connected by waveguides of different impedance to a transmitter (S) and an antenna (A) respectively. A third waveguide leads from an output port (3) to a receiver (E). The surface magnetostatic waves are propagated, on a YIG epitaxial film (16) over a pref. gallium-gadolinium granulate substrate, between an input transformer (6) and a bidirectional port transformer with a prim. part (10), a compensating part (11) and a half-wavelength contact bridge (12) connected to the output port. USE/ADVANTAGE - In e.g. radio direction-finding and radar, medical NMR tomography, device can be used as n-port directional coupler or circulator at frequencies of at least a few GHz. |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102006010003-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/RU-2717257-C1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7808243-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5923228-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/EP-0794615-A1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102007015544-B4
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-8604792-B2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/DE-102007015544-A1 |
| priorityDate |
1992-02-13-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |