SiGe High-Frequency Pulse-Width Modulation for Low-Noise Applications
OwnerJohn Suarezinventor
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Abstract
This disclosure details the first-known experimental observation of pulse-width modulation at 100 MHz using silicon-germanium HBT technology. Also provided is an integrated-circuit design with additional flexibility for the end user, with simulated performance results. This result is significant, among other reasons, in that it shows how pulse-width modulation generators can be used in close proximity to sensitive electronics without the need or requirement for shielding of the electrical noise byproduct of such pulse-width modulation generators.
Claims20
A pulse-width modulation (PWM) generator configured to function in close physical proximity to electronics that are sensitive to electrical noise, said PWM generator comprising:
- (a) a PWM generator configured to operate at a fundamental frequency whose harmonics are too high to interfere with said electronics;
- and
- (b) an absence of a requirement for electrical shielding between said generator and said electronics.
A pulse-width modulation (PWM) generator for supplying electrical energy to an electrical load, comprising:
- pulse-width modulation of the electrical energy;
- and
- said PWM generator operating at a fundamental frequency of at least 10 MHz.
A pulse-width modulation (PWM) generator for supplying electrical energy to an electrical load, comprising:
- pulse-width modulation of the electrical energy;
- and
- SiGe transistors configured to operate in a switching role.
Dependencies are inferred from the claim text.