公开(公告)号：US20210328560A1

公开(公告)日：2021-10-21

申请号：US16851616

申请日：2020-04-17

Applicant: Infineon Technologies AG

Inventor： Stefano DI MARTINO ,  Philipp Franz FREIDL

IPC: H03F3/21 ,  H03F3/24 ,  H03F1/02

Abstract: A system may include a first power detector to measure a power level of a signal on a first transmitter channel, a second power detector to measure a power level of a signal on a second transmitter channel. The system may include a combiner to provide a combined signal associated with the signal on the first transmitter channel and the signal on the second transmitter channel, and a third power detector to measure a power level of the combined signal. The system may include a processing circuit to determine a relative phase difference between the signal on the first transmitter channel and the signal on the second transmitter channel based on results of measuring the power level of the signal on the first transmitter channel, measuring the power level of the signal on the second transmitter channel, and measuring the power level of the combined signal.

公开(公告)号：US20190190524A1

公开(公告)日：2019-06-20

申请号：US16203857

申请日：2018-11-29

Applicant: Infineon Technologies AG

Inventor： Philipp Franz FREIDL ,  Fabio Padovan ,  Mattias Welponer

IPC: H03L7/099 ,  H03L7/189 ,  H03L7/14

Abstract: An integrated circuit is described herein. In accordance with one embodiment, the circuit includes a voltage controlled oscillator (VCO) that is configured to receive a tuning voltage at a tuning input and to provide an RF oscillator signal at an oscillator output. The circuit further includes a first and a second switchable resistor network. The first switchable resistor network includes at least a first resistor and at least a first switch and is connected between the tuning input of the VCO and a first node, which operably provides a first voltage. The second switchable resistor network includes at least a second resistor and at least a second switch and is connected between the tuning input of the VCO and a second node, which operably provides a second voltage. Furthermore, the circuit includes a control circuit that is configured to activate, dependent on a control signal, either the first switchable resistor network, the second switchable resistor network or both, the first and the second resistor networks.