Compact antenna system
US4369518A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 28, 1980 |
| Grant date | Jan 18, 1983 |
| Priority date | — |
| Expiry date | Nov 28, 2000 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F3/60
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A compact antenna system for use in connection with pay television reception comprises a resonant cavity including a small dipole, the latter being connected to a circuit board containing circuitry for converting the received pay television signal to a frequency usable by the television receiver of the subscriber. The member defining the cavity is affixed to the circuit board, which in turn is mounted upon a holder attached to the exterior of the structure in which the television receiver is located. The circuit board includes a preamplifier-filter stage to filter extraneous signals and to promote preamplification of the signal from the antenna. The preamplified signal goes to the input of a mixer and from there is filtered to the frequency of the channel selected by the user of the television receiver. At least one triangular circuit element is utilized in the preamplifier and in the mixer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.