| Predicate |
Object |
| assignee |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentassignee/MD5_75bce7d2fbd1a0fb6ebf93017554cf5b |
| classificationCPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01Q1-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentcpc/H01Q13-103 |
| classificationIPCInventive |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q1-34
http://rdf.ncbi.nlm.nih.gov/pubchem/patentipc/H01Q13-10 |
| filingDate |
1984-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| inventor |
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_990911136a0aae8fc704fe9972e2535c
http://rdf.ncbi.nlm.nih.gov/pubchem/patentinventor/MD5_ea057594724a30b16525f8197af09816 |
| publicationDate |
1986-04-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| publicationNumber |
GB-2165396-A |
| titleOfInvention |
Buoyant antenna |
| abstract |
A buoyant antenna comprises a slot (10) formed in a cylindrical conductor, for example by the edge opening in a single turn roll-resonator of metal clad plastic dielectric sheet material (11), the slot being substantially one free-space wavelength long at the operating frequency and short circuited at each end (12). Varactor diodes (13) are connected across the slot. Low frequency modulation of the varactor diode bias effects tuning of the antenna. The roll-resonator may be encased in a jacket of foam dielectric (20). A pilot signal can be injected, via the varactor feed lines. As shown there is an overlap s. In an alternative arrangement an insulating cylinder carries a conductive layer with a gap in it, and the provision of a conductor without an insulating cylinder is envisaged. <IMAGE> |
| isCitedBy |
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2276274-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5757326-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5940041-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-6414647-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2369247-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/GB-2369247-B
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-7123200-B1
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5946610-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/US-5589840-A
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03001627-A2
http://rdf.ncbi.nlm.nih.gov/pubchem/patent/WO-03001627-A3 |
| priorityDate |
1984-10-09-04:00^^<http://www.w3.org/2001/XMLSchema#date> |
| type |
http://data.epo.org/linked-data/def/patent/Publication |