US 12,407,427 B2
Apparatus and method for generating an output signal with adjustable phase noise, and system
Florian Gerbl, Olching (DE); Sebastian Kehl-Waas, Landshut (DE); and Florian Ramian, Karlsfeld (DE)
Assigned to Rohde & Schwarz GmbH & Co. KG, Munich (DE)
Filed by Rohde & Schwarz GmbH & Co. KG, Munich (DE)
Filed on Aug. 15, 2023, as Appl. No. 18/449,760.
Prior Publication US 2025/0062839 A1, Feb. 20, 2025
Int. Cl. H04B 17/12 (2015.01)
CPC H04B 17/12 (2015.01) 16 Claims
OG exemplary drawing
 
1. An apparatus for generating an output signal with adjustable phase noise, the apparatus comprising:
waveform generation circuitry configured to generate a reference signal;
oscillator circuitry configured to generate an adjustable local oscillator (LO) signal
wherein the oscillator circuitry is configured to generate the LO signal with user-defined phase noise based on input data, and the input data comprises phase noise characteristics specified by a user via a user interface; and
mixer circuitry coupled to the waveform generation circuitry and the oscillator circuitry and configured to mix the reference signal with the LO signal to generate the output signal having phase noise based on the LO signal, wherein the mixer circuitry comprises an output node and is configured to provide the output signal to the output node,
wherein the output signal is configured to be injected into a device under test (DUT) for evaluating effects of the phase noise on signal processing within the DUT.