Patent ID: 8027799
Filing Date: 2011-09-27
Classification: H03H

Abstract:
1. An adjustable impedance system comprising: a first impedance having a first end and a second end; a second impedance having a first end connected to the second end of the first impedance, and having a second end; a switch having a first terminal connected to the second end of the second impedance, and having second and third terminals; and a capacitance having a first terminal connected to the first end of the second impedance and a second terminal connected to the third terminal of the switch; and wherein: the second terminal of the switch is an input for a signal to control a connection between the first and third terminals of the switch; to control the connection between the first and third terminals of the switch is to control a third impedance between the first end of the second impedance and the third terminal of the switch, wherein the capacitance is in parallel with the third impedance; and each of the first and second impedances comprises one or more resistors.