公开(公告)号：US11239990B2

公开(公告)日：2022-02-01

申请号：US16891445

申请日：2020-06-03

Applicant: Infineon Technologies AG

Inventor： Vincenzo Fiore ,  Werner Arriola ,  Oliver Lang ,  Alexander Melzer

IPC: H04L7/00

Abstract: Noise test systems, methods, and circuitries are provided for determining a phase error of a first modulator using a second modulator. In one example, an integrated circuit device includes a first modulator configured to modulate a first signal to generate a first modulated signal and a second modulator configured to modulate a second signal to generate a second modulated signal. The first signal and the second signal are based on the same reference signal. The integrated circuit device also includes analysis circuitry configured to determine a phase error of the first modulator based on the first modulated signal and the second modulated signal.

公开(公告)号：US11018728B2

公开(公告)日：2021-05-25

申请号：US16423499

申请日：2019-05-28

Applicant: Infineon Technologies AG

Inventor： Oliver Lang ,  Werner Arriola ,  Vincenzo Fiore ,  Alexander Melzer

IPC: H04B7/0408 ,  H04B1/48 ,  H03M1/12 ,  G01S13/82 ,  G01S13/34 ,  G01S7/40

Abstract: A circuit includes a transmission channel that outputs a continuous-wave signal based on a reference signal, a transmit monitoring signal path that couples out a portion of the transmit signal as a monitoring signal, a test phase shifter that receives the reference signal and generates a phase-shifted signal based on a sequence of phase offsets applied to the reference signal, a phase mixer that mixes the phase-shifted signal and the monitoring signal to generate a mixer output signal including a plurality of direct current (DC) values, an analog-to-digital converter that samples the mixer output signal in order to provide a sequence of DC values; and a monitor circuit that applies a discrete Fourier transform (DFT) to the sequence of DC values to generate a plurality of DFT bins with corresponding DFT bin values, and generate compensated phase information of the transmission channel using at least two DFT bin values.

公开(公告)号：US11635489B2

公开(公告)日：2023-04-25

申请号：US16909113

申请日：2020-06-23

Applicant: Infineon Technologies AG

Inventor： Vincenzo Fiore ,  Werner Arriola ,  Rene Kobler ,  Oliver Lang ,  Alexander Melzer

IPC: G01S7/40

Abstract: A method for the use in a radar system is described herein. In accordance with one embodiment, the method includes providing a local oscillator signal to an RF output channel of a radar system. The RF output channel is configured to generate, in an enabled state, an RF output signal based on the local oscillator signal. The method further includes determining a first measurement signal based on the local oscillator signal and a first representation of the RF output signal, while the RF output channel is disabled, and thus the first measurement signal represents crosstalk. Further, the method includes determining a second measurement signal based on the local oscillator signal and a second representation of the RF output signal while the RF output channel is enabled. A phase value associated with the RF output channel is determined based on the first measurement signal and the second measurement signal.