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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Swanson; Hilmer Irvin
Address:
Quincy, IL
No. of patents:
4
Patents:












Patent Number Title Of Patent Date Issued
5969571 Pulse duration amplifier system October 19, 1999
A pulse duration modulation (PDM) amplifier system having a plurality of PDM carrier signals of like frequency but unlike phase. A first pair of PDM amplifiers responds to a common modulating input signal. Each amplifier pulse duration modulates a corresponding one of the PDM carrier
5903188 Modulator having improved discharging unwanted capacitance May 11, 1999
A pulse step modulator comprising is disclosed including a plurality of series connected unit step modules, each including a DC voltage source and an associated actuatable switch for, when on, turning on the associated module to provide a unit step voltage. An output circuit is connected
5861776 High efficiency RF amplifier January 19, 1999
An RF power amplifier system is provided including a plurality of the DC voltage sources of different magnitudes. An RF source provides an RF drive signal. N RF actuatable power amplifiers are provided. Each amplifier, when actuated, is connectable to a selected one of the voltage source
5754082 N-way combiner May 19, 1998
An N-way power combiner is presented herein for combining N RF signals. This combiner includes N input ports each for receiving an RF input signal. N transmission paths respectively extend from the N input ports to a common output port. N reject loads are respectively associated with the










 
 
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