公开(公告)号：US20220360345A1

公开(公告)日：2022-11-10

申请号：US17811983

申请日：2022-07-12

Applicant: NXP B.V.

Inventor： Frank Op 't Eynde ,  Olivier Crand ,  Milad Piri

IPC: H04B17/00

Abstract: A measurement apparatus comprising a first terminal to receive an input signal of a circuit under test; a second terminal to receive an output signal of the circuit under test. A first and second phase splitter configured to generate a first and second phase signal, I1 and I2, and a first and second quadrature signal, Q1 and Q2. A first and second multiplexer, each coupled to the first terminal and the second terminal and configured to alternately pass the input and output signals of the circuit under test to the inputs of the first and second phase splitters. A double-quadrature mixer having four inputs configured to receive I1, Q1, I2, and Q2, and an output. A calculation unit to determine one or both of a phase shift of the circuit under test and/or a gain of the circuit under test based on the output of the double-quadrature mixer.

公开(公告)号：US11804911B2

公开(公告)日：2023-10-31

申请号：US17811983

申请日：2022-07-12

Applicant: NXP B.V.

Inventor： Frank Op 't Eynde ,  Olivier Crand ,  Milad Piri

IPC: H04B3/46 ,  H04B17/00

CPC classification number: H04B17/0085

Abstract: A measurement apparatus comprising a first terminal to receive an input signal of a circuit under test; a second terminal to receive an output signal of the circuit under test. A first and second phase splitter configured to generate a first and second phase signal, I1 and I2, and a first and second quadrature signal, Q1 and Q2. A first and second multiplexer, each coupled to the first terminal and the second terminal and configured to alternately pass the input and output signals of the circuit under test to the inputs of the first and second phase splitters. A double-quadrature mixer having four inputs configured to receive I1, Q1, I2, and Q2, and an output. A calculation unit to determine one or both of a phase shift of the circuit under test and/or a gain of the circuit under test based on the output of the double-quadrature mixer.

公开(公告)号：US11424840B2

公开(公告)日：2022-08-23

申请号：US17392334

申请日：2021-08-03

Applicant: NXP B.V.

Inventor： Frank Op 't Eynde ,  Olivier Crand ,  Milad Piri

IPC: H04B14/06 ,  H04B17/00

Abstract: A measurement apparatus comprising a first terminal to receive an input signal of a circuit under test; a second terminal to receive an output signal of the circuit under test. A first and second phase splitter configured to generate a first and second phase signal, I1 and I2, and a first and second quadrature signal, Q1 and Q2. A first and second multiplexer, each coupled to the first terminal and the second terminal and configured to alternately pass the input and output signals of the circuit under test to the inputs of the first and second phase splitters. A double-quadrature mixer having four inputs configured to receive I1, Q1, I2, and Q2, and an output. A calculation unit to determine one or both of a phase shift of the circuit under test and/or a gain of the circuit under test based on the output of the double-quadrature mixer.