Communications: directive radio wave systems and devices (e.g. – Return signal controls external device – Missile or spacecraft guidance
Patent
1986-12-24
1995-12-12
Hellner, Mark
Communications: directive radio wave systems and devices (e.g.,
Return signal controls external device
Missile or spacecraft guidance
G01S 1300
Patent
active
054753910
ABSTRACT:
A narrow band receiver is shown to include a double downconversion arrangement wherein the frequency of the second local oscillator is controlled to maintain the frequency of the second I.F. signals at a predetermined value.
REFERENCES:
patent: 3631485 (1971-12-01), Beazell, Jr.
patent: 3938148 (1976-02-01), Hobson
patent: 4100545 (1978-07-01), Tabourier
patent: 4216472 (1980-08-01), Albanese
patent: 4256275 (1981-03-01), Flick et al.
Clark William R.
Hellner Mark
Mofford Donald F.
Raytheon Company
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