Electric power conversion systems – Current conversion – Constant current to constant voltage or vice versa
Patent
1995-08-14
1997-01-14
Wong, Peter S.
Electric power conversion systems
Current conversion
Constant current to constant voltage or vice versa
323315, H02M 700
Patent
active
055946330
ABSTRACT:
A voltage-to-current converting circuit configured to convert an input voltage signal into a pair of complementary current signals by use of a current mirror, comprises a transistor 4 connected in the form of a diode and connected in series with a constant current source 21, a transistor 3 having a collector connector to a collector of the transistor 4, a transistor 2 having a base connected to a base of the transistor 3 so as to form a current mirror in cooperation with the transistor 3, the base of the transistor 2 being connected to receive an input voltage signal Vin, a bias circuit 5 for biasing the base of the transistors 3 and 2, and a transistor 1 having a base connected to a base of the transistor 4 so as to form a current mirror in cooperation with the transistor 4. The input voltage Vin is converted into a collector current I1 of the transistor 1 and a collector current I2 of the transistor 2. Thus, the voltage-to-current converting circuit is composed of only NPN transistors, so that a manufacturing process is simplified. In addition, since no emitter follower is included, a low voltage operation can be realized. This circuit can be applied to a multiplier, frequency doubler, a frequency mixer, etc.
REFERENCES:
patent: 4442400 (1984-04-01), Nagano
patent: 4647841 (1987-03-01), Miller
patent: 4675594 (1987-06-01), Reinke
patent: 4896333 (1990-01-01), Can
patent: 5252910 (1993-10-01), Agaesse
patent: 5341087 (1994-08-01), Van Leeuwen
patent: 5367248 (1994-11-01), Lin
patent: 5451859 (1995-09-01), Ryat
patent: 5498953 (1996-03-01), Ryat
patent: 5515260 (1996-05-01), Watanabe et al.
Digest of Technical Papers--"Direct-Conversion Quadrature Modulator" Tsukhara et al. pp. 40-41 (Japan 1994).
Berhane Adolf
NEC Corporation
Wong Peter S.
LandOfFree
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