Paging transmitter having broadband exciter using an intermediate frequency above the transmit frequency
US5881375A · kind A · utility
103Cited by
3References
2Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 31, 1997 |
| Grant date | Mar 9, 1999 |
| Priority date | — |
| Expiry date | Jan 31, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B2001/0491
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present invention teaches a paging transmitter that has an exciter that upconverts a modulated signal to an intermediate frequency (IF) above that of the transmit frequency. By so doing, the paging transmitter can broadcast a large range of transmit frequencies. Additionally, filtering of unwanted byproducts during the upconversion process is significantly simplified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.