发明名称 |
Multi-function modulator for low-powered, wired and wireless command, control, and communications applications |
摘要 |
An amplitude, phase and frequency modulator circuit is provided with the circuit containing a periodically driven switch. The circuit connects a DC power source and a resistive load. Periodic operation of the switch generates a square-wave of voltage across the load. A transistor used as a switch is embedded in a switch driver that controls base current and base-emitter reverse bias voltage. The modulator DC input resistance is approximately equal to the load resistance when the switch ON-state period and OFF-state period are approximately equal. The modulator efficiency is nearly one hundred percent. The frequency response of the square-wave modulator system is high-pass with a lower cutoff frequency determined by element values. |
申请公布号 |
US8125198(B2) |
申请公布日期 |
2012.02.28 |
申请号 |
US20080313789 |
申请日期 |
2008.11.24 |
申请人 |
STEINBRECHER DONALD H.;THE UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE NAVY |
发明人 |
STEINBRECHER DONALD H. |
分类号 |
G05F1/00;H02M3/156 |
主分类号 |
G05F1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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