Abstract: An electronic ignition module for vintage automobiles that utilizes existing components and wiring to retain the look and operation of the original system but with superior performance. The ignition module replaces the original roller and contacts of a vintage automobile ignition timer with modern control electronics that actuate the original coils and original spark plugs using the original wiring in the original manor. Electronic ignition operation is user programmable to emulate the original roller/timer performance or provide automatic spark advance similar to modern automobile operation for optimum power and efficiency while freeing the operator from manual adjustment of spark timing. Ignition module programming is accomplished without any external switches, buttons, jumpers or modification to the vintage automobile by simply sensing the presence or absence of ignition coils connected to the system when power is applied.

Abstract: An electronic ignition module for vintage automobiles that utilizes existing components and wiring to retain the look and operation of the original system but with superior performance. The ignition module replaces the original roller and contacts of a vintage automobile ignition timer with modern control electronics that actuate the original coils and original spark plugs using the original wiring in the original manor. Electronic ignition operation is user programmable to emulate the original roller/timer performance or provide automatic spark advance similar to modern automobile operation for optimum power and efficiency while freeing the operator from manual adjustment of spark timing. Ignition module programming is accomplished without any external switches, buttons, jumpers or modification to the vintage automobile by simply sensing the presence or absence of ignition coils connected to the system when power is applied.

Abstract: The attenuator has a microstrip network connected between an input and an output of the attenuator, and the microstrip network has a different impedance than a remainder of the attenuator.

Abstract: A phase shifter circuit shifts the phase of a voltage varying RF signal at high RF power levels by using a diode arrangement of back to back diode sets connected in series to reduce the change in capacitive reactance of the diode arrangement. The diode arrangement is connected to a phase adjustment port of a phase shifting device which shifts the phase of the RF signal according to the capacitive reactance level at the phase adjustment port. A control circuit for each back to back diode set can be used to provide independent adjustment of each diode set to balance capacitive reactance responses between the diode sets to further reduce the change in capacitive reactance. In certain embodiments, the phase shifter circuit uses a ninely (90) degree hybrid coupler with two phase adjustment ports, a zero (0) degree port and a -90 degree port.