Telecommunications – Receiver or analog modulated signal frequency converter – Frequency modifying or conversion
Patent
1994-11-08
1995-08-01
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Frequency modifying or conversion
455326, 327355, 327484, H04B 128
Patent
active
054386934
ABSTRACT:
A mixer of the commutating type using FETs to switch between the primary of a transformer for an r.f. input and the secondary of a transformer 2 for an i.f. output. The mixer has high linearity and low power consumption of the local oscillator drive because the gate electrodes of the FETs are switched using pulse waveforms from driving transistors.
REFERENCES:
patent: 3705355 (1972-12-01), Palmer et al.
Electronic Engineering, May, 1986; "High Dynamic Range Mixing With the Si9801", Oxner, pp. 53-56.
I.E.E.E. Transactions on Circuits and Systems, vol. 35, No. 2, Feb., 1988; "High-Speed Driver For Switching Power MOSFET's", Kazimierczuk, pp. 254-256.
"A transistor Switch" A. I Efremor et al Dec. 23, 1972.
Oxner, "FETs In Balanced Mixers" Siliconix, Inc, Jul. 1972.
Eisenzopf Reinhard J.
GEC--Marconi Limited
Le Thanh
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