Method of making a radio frequency oscillator-modulator with ground metallization
US4214360A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 10, 1978 |
| Grant date | Jul 29, 1980 |
| Priority date | — |
| Expiry date | Oct 10, 1998 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49124
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency oscillator-modulator for use in a video game includes a folded metal shield box having a slot on one of its ends with which a similarly slotted printed circuit board containing the oscillator and modulator is mated. Circuitry of the oscillator and modulator provides for great linearity and low R.F. radiation. The slot arrangement provides for effective grounding of the ground metallization of the external portion of the printed circuit board which contains the radio frequency output terminal along with the various input terminals. This portion contains ground metallization which makes very effective electrical contact with the slot of the shield box thus again containing R.F. radiation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.