Device comprising a controlled matching stage
AssigneeEpcos AG
InventorAdrianus van Bezooijen
Life of this patent
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Abstract
A device includes a matching stage coupled between a first signal terminal and a second signal terminal. A signal path extends between the first signal terminal and the second terminal. An adjustable impedance element is connected to the signal path. A detection circuit is coupled to the signal path and configured to derive matching information. A control circuit is coupled between the detection circuit and the adjustable impedance element. The control circuit is configured to control the adjustable impedance element.
Claims17
A device comprising a matching stage coupled between a first signal terminal and a second signal terminal, the matching stage comprising:
- a signal path between the first signal terminal and the second terminal;
- an adjustable impedance element connected to the signal path;
- a detection circuit coupled to the signal path and configured to derive matching information;
- and
- a control circuit coupled between the detection circuit and the adjustable impedance element, the control circuit configured to control the adjustable impedance element, wherein, in a transmission mode, the controlled matching stage is active and in a receiving mode the controlled matching stage is inactive.
A device comprising a matching stage coupled between a first signal terminal and a second signal terminal, the matching stage comprising:
- a signal path between the first signal terminal and the second terminal;
- an adjustable impedance element connected to the signal path;
- a detection circuit coupled to the signal path and configured to derive matching information;
- and
- a control circuit coupled between the detection circuit and the adjustable impedance element, the control circuit configured to control the adjustable impedance element, wherein the adjustable impedance element is a capacitance element of a serial LC network, and wherein an inductor L has a fixed value and a capacitor C has an adjustable value.
A device comprising a matching stage coupled between a first signal terminal and a second signal terminal, the matching stage comprising:
- a signal path between the first signal terminal and the second terminal;
- an adjustable impedance element connected to the signal path;
- a detection circuit coupled to the signal path and configured to derive matching information;
- and
- a control circuit coupled between the detection circuit and the adjustable impedance element, the control circuit configured to control the adjustable impedance element, wherein the adjustable impedance element is a capacitive element of a serial LC network, and wherein the serial LC network is embedded in a control loop to automatically correct impedance mismatches.
Dependencies are inferred from the claim text.