US 2019/0260617 A1Published application

Synthesizer

AssigneeSony Corporation

InventorArndt Thomas Ott

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Abstract

A synthesizer comprises a first two-point modulation phase locked loop, TPM PLL, circuit that receives a first reference clock signal at a first reference frequency and a feedback signal at a feedback frequency and generates a first chirp signal by applying a two-point modulation PLL on the first reference clock signal, a second integer-n TPM PLL circuit that receives a second reference clock signal at a second reference frequency lower than the first reference frequency and generates a second chirp signal by applying a TPM PLL on the second reference clock signal, a mixer that downconverts the first chirp signal by the second chirp signal to obtain the feedback signal at the feedback frequency corresponding to the difference of the frequency of the first chirp signal and the second chirp signal, and a feedback path that feeds back the feedback signal to the first TPM PLL circuit.

Claims12

Dependent claims

A synthesizer comprising

a first two-point modulation phase locked loop, TPM PLL, circuit configured to receive a first reference clock signal at a first reference frequency and a feedback signal at a feedback frequency and to generate a first chirp signal in a first mm-wave frequency range by applying a two-point modulation PLL on the first reference clock signal,
a second integer-n TPM PLL circuit configured to receive a second reference clock signal at a second reference frequency lower than the first reference frequency and to generate a second chirp signal in a second mm-wave frequency range by applying a two-point modulation PLL on the second reference clock signal,
a mixer configured to downconvert the first chirp signal by the second chirp signal to obtain the feedback signal at the feedback frequency corresponding to the difference of the frequency of the first chirp signal and the second chirp signal, and
a feedback path configured to feed back the feedback signal to the first TPM PLL circuit.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 16/274,265Filed 13 Feb 2019
Priority: EP 18157705.720 Feb 2018
Published: 22 Aug 2019
Term ends: Not estimatedThe source records don’t support an estimate.

Classification19 codes

H04L 27/103
Frequency-modulated carrier systems, i.e. using frequency-shift keying: chirp modulation
G01S 7/03
Of systems according to group G01S13/00: details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver
G01S 7/35
Of systems according to group G01S13/00: details of non-pulse systems
G01S 7/4008
Of parts of a radar system: of transmitters