Testtongenerator und Verfahren dafür

Details

Veröffentlichungs-Nr.

EP4753157

Anmeldetag

29. November 2024

Veröffentlichung

3. Juni 2026

Rechtsraum

EP

IPC

H04B1/28

Abstract

A test tone generator (467) for a receiver (356) comprises a dual-modulus divider circuit (415) arranged to receive a local oscillator, LO (367), and generate a tone therefrom in a series of pulses (417) at an offset frequency from the LO signal; at least one counter (420) connected to an output of the dual-modulus divider circuit and arranged to count a number of pulses (417) and reset the dual-modulus divider circuit when a count threshold is reached. A tone shaping circuit (430) converts the series of pulses into an output test tone (432) The dual-modulus divider circuit (415) and tone shaping circuit in combination are arranged to generate a test tone from the series of pulses at an offset frequency from the LO signal, that does not contain frequency content at an image frequency.

Anmelder

Firma

NXP B.V.

Land

🇳🇱 Niederlande