Phase to amplitude H-Bridge switching circuit

Details Phase to amplitude H-Bridge switching circuit Phase to amplitude H-Bridge switching circuit

2006-08-15

2006-08-15

Nguyen, Matthew V. (Department: 2838)

Electric power conversion systems

Current conversion

Using semiconductor-type converter

C363S098000

Reexamination Certificate

active

07092269

ABSTRACT:
A high power AM-band transmitter amplifier comprises four switches in an H-Bridge configuration and operates by adjusting the duty cycle of the voltage waveform on a transformer. The duty cycle is adjusted by changing the phase relationship between the diagonal switch pairs. An embodiment of the amplifier operates efficiently by the addition of a current source that may comprise inductor and capacitor circuits to assure zero voltage switching of all the switches. The inventive H-Bridge configuration can also be utilized in a phase modulated power supply.

REFERENCES:
patent: 4580111 (1986-04-01), Swanson
patent: 5003271 (1991-03-01), Swanson
patent: 6072362 (2000-06-01), Lincoln
patent: 6294957 (2001-09-01), Luu
patent: 6300829 (2001-10-01), Luu
Small-Signal Analysis of the Phase-Shifted PWM Converter, IEEE Transactions on Power Electronics, vol. 7, No. 1, Jan. 1992; pp. 128-135.

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