Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1985-03-21
1987-01-13
Ng, Jin F.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455326, 455332, 332 43B, H04B 126
Patent
active
046370692
ABSTRACT:
A doubly balanced mixer comprising a ring modulator each leg of which is formed by the series connection of a high speed switching diode and one or more diodes with low intrinsic resistance and with high accumulated charges, preferably of the "varactor" or "PIN" type.
REFERENCES:
patent: 2945950 (1960-07-01), Midkiff
patent: 3413571 (1968-11-01), Ulrick et al.
patent: 3939429 (1976-02-01), Lohn et al.
patent: 4534062 (1985-08-01), Levinson
"Wide Band Modulator" by Laczko, IBM Technical Disclosure Bulletin, vol. 2, No. 4, 12/1959.
Adret Electronique
Drucker William A.
Ng Jin F.
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