Patent US 3321712A
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| Patent number | US 3321712A (click link for details and documents via Google Patents) |
|---|---|
| Title | Phase lock system for spectrum analyzer |
| Inventors | Arnie Frisch, Gordon D. Long |
| Company | Tektronix Inc |
| Filing date | 1965-08-16 |
| Grant date | 1967-05-23 |
Related products:
| Manufacturer | Model | Description | Introduced | Designers |
|---|---|---|---|---|
| Tektronix | 1L20 | 4.2 GHz Spectrum Analyzer plug-in | 1965 | Arnie Frisch • Gordon Long • Morris Engelson |
| Tektronix | 1L30 | 10.5 GHz Spectrum Analyzer plug-in | 1965 | Arnie Frisch • Gordon Long • Morris Engelson |
| Tektronix | 1L40 | 40 GHz Spectrum Analyzer plug-in | 1968 | Arnie Frisch • Gordon Long • Morris Engelson |
| Tektronix | 7L18 | 18 (60) GHz Spectrum Analyzer | 1978 | Linley Gumm • Bob Bales • Russell Brown • George Maney • Carlos Beeck • James Wolf • Dave Shores • Phil Snow • Wes Hayward • Jack Reynolds • Steve Morton • Don Kirkpatrick • Dennis Smith • Al Huegli |
Describes the PLL first used in the 1L20, 1L30, and 1L40 that uses a sampling phase detector directly at the 1st LO frequency of up to several GHz.