Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1992-10-23
1993-10-12
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307254, 307355, H03K 526
Patent
active
052528669
ABSTRACT:
A frequency mixing circuit is provided which comprises first and second differential pairs each formed of two transistors different in emitter area from each other and constant current sources for respectively driving the first and second differential pairs. The collectors of the transistors having a large emitter area of K (K>1) and the collectors of the transistors having a small emitter area of 1 of the first and second differential pairs are respectively connected in common. Between the both differential pairs, the bases of the transistors having a emitter area of K and the bases of the transistors having a emitter area of 1 are respectively connected in common. A first AC signal to be mixed is applied to one of two sets of the commonly connected bases and a second AC signal to be mixed is applied to the other thereof. Thus, the degradation of NF can be reduced and a good high frequency characteristic can be obtained at a low current.
REFERENCES:
patent: 3710149 (1973-01-01), Ohsawa
patent: 4324990 (1982-04-01), Gay
patent: 4362956 (1982-10-01), Orgasawara
patent: 4463271 (1984-07-01), Gill
patent: 4795916 (1989-01-01), Liron
patent: 5039889 (1991-08-01), Janton et al.
Heyman John S.
NEC Corporation
Ton My Trong
LandOfFree
Frequency mixing circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency mixing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency mixing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1906913