Multi-Resonant electronic power converter with a wide dynamic range

A method of providing a particular user's power requirement utilizing a variable high frequency multi-resonant electronic power converter, the method comprising the steps of:

• a) periodically detecting incoming signals;
• b) measuring the strength of an incoming signal;
• c) generating a pulse signal at a frequency which corresponds to the strength of the detected incoming signal;
• d) using the pulse signal to convert a DC voltage source to an AC signal at the pulse signal frequency;
• e) processing the AC signal by applying it to a filter operable to achieve greater than 50% variation in output magnitude in a frequency bandwidth which is less than one half the lowest frequency in the band;
• f) converting the processed AC signal to a DC voltage;
• and
• g) employing the converted DC voltage to provide the required power to a transmitter.

A method of providing a particular user's power requirement to a multi-use transmitter utilizing a variable high frequency multi-resonant electronic power converter, the method comprising the steps of:

• a) determining the signal strength required to transmit a particular set of signals for a particular user's power requirement based on a predetermined value of signal strength for said use;
• b) generating a pulse signal at a frequency which corresponds to the required transmission signal strength;
• c) using the pulse signal to convert a DC voltage to an AC signal at the pulse signal frequency;
• d) processing the AC signal by applying it to a filter operable to achieve greater than 50% variation in output magnitude in a frequency bandwidth which is less than 30% of the highest frequency in the band;
• e) converting the processed AC signal to a DC voltage;
• and
• f) employing the converted DC voltage to provide power to the transmitter.

An improved variable high frequency multi-resonant electronic power converter for providing a required DC output voltage based on a particular user's power requirements comprising:

• a) a sources of DC power;
• b) a DC-AC converter having an input connected to the source of DC power, a frequency control input, and an AC output the frequency of which varies with the frequency of drive pulses applied to the frequency control input;
• c) a fourth or greater order low pass filter having an input connected across the AC output of the DC-AC converter and having an output which varies with frequency, said filter being characterized by a gain-frequency response exhibiting a high roll-off rate for a relatively small change in frequency of operation;
• d) a small, lightweight transformer having a primary winding and a secondary winding with its primary winding connected across the output of the filter;
• e) a rectifier circuit operable to convert an AC voltage to a DC voltage having an input connected to the secondary winding of the transformer and having an output;
• f) an output load connected to the output of the rectifier circuit;
• and
• g) a control circuit with an input for receiving the particular user's power requirements and an output connected to said frequency control input of the DC-AC converter, said control circuit calculating and generating high frequency drive pulses on its output so that an appropriate DC voltage is supplied to the output load.

An improved variable high frequency multi-resonant electronic power converter for providing a required DC output voltage based on a particular user's power requirements comprising:

• a) a source of DC power;
• b) a DC-AC converter having an input connected to the source of DC power, a frequency control input, and an AC output the frequency of which varies with the frequency of drive pulses applied to the frequency control input;
• c) a notch filter having an input connected across the output of the DC-AC converter and having an output which varies with frequency, said filter being characterized by a gain-frequency response exhibiting a high roll-off rate for a relatively small change in frequency of operation;
• d) a small, lightweight transformer having a primary winding a secondary winding with its primary winding connected across the output of the filter;
• e) a rectifier circuit operable to convert an AC voltage to a DC voltage having an input connected to the secondary winding of the transformer and having an output;
• f) an output load connected to the output of the rectifier circuit;
• and
• g) a control circuit with an input for receiving the particular user's power requirements and an output connected to said frequency control input of the DC-AC converter, said control circuit calculating and generating high frequency drive pulses on its output so that an appropriate DC voltage is supplied to the output load.