Patent ID: 7265643
Filing Date: 2007-09-04
Classification: G01R,H01G,H01L,H01P,H03B,H03F,H03H,H03J,H03L,H04B

Abstract:
1. A tunable isolator circuit comprising: an isolator formed on a substrate and having a input port, an output port and an isolation port; an isolation port matching circuit formed on the substrate and connected to the isolation port, the isolation port matching circuit comprising a first ferro-electric (FE) tunable component and configured to provide natural impedance matching to a first component impedance of a first electrical component connected to the isolation port; an output port matching circuit formed on the substrate and connected to the output port, the output port matching circuit comprising a second ferro-electric (FE) tunable component and configured to provide natural impedance matching to a second component impedance of a second electrical component connected to the output port; and a input port matching circuit formed on the substrate and connected to the input port, the input port matching circuit configured to provide natural impedance matching to a third component impedance of a third electrical component connected to the input port, the input port matching circuit comprising a third ferro-electric (FE) tunable component and a micro-electrical-mechanical switch configured to connect an impedance component to the ferro-electric (FE) tunable component when activated, wherein the first ferro-electric (FE) tunable component, second ferro-electric (FE) tunable component, third ferro-electric (FE) tunable component, and the micro-electrical-mechanical switch are adjustable during operation of the tunable isolator circuit to tune a frequency of operation of the tunable isolator circuit from within a personal communications services (PCS) frequency band to within another PCS frequency band.