Spread-spectrum communication apparatus
US5930287A · kind A · utility
2Cited by
4References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 27, 1996 |
| Grant date | Jul 27, 1999 |
| Priority date | — |
| Expiry date | Nov 27, 2016 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/71
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A spread-spectrum communication apparatus includes a receiving antenna, amplifiers, band-pass filters, a threshold filter circuit, a despreader, a base-band demodulation circuit, and other circuit stages. The threshold filter circuit is connected in series before the despreader. The threshold filter circuit has a frequency-band width covering the band width of a spread signal and cuts interference waves at certain levels at each frequency within the frequency band. The threshold filter circuit includes a magnetostatic wave device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.