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Alexander Roth

Rohde & Schwarz

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Publication

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european frequency and time forum | 2016

A 1 MHz to 50 GHz direct down-conversion phase noise analyzer with cross-correlation

Gregor Feldhaus; Alexander Roth

A new phase noise test instrument covers the frequency range from 1 MHz to 50 GHz with direct down-conversion analog I/Q mixers and baseband signal sampling. The traditional PLL has been replaced by a digital FM demodulator for phase detection and frequency tracking. An additional AM demodulator enables concurrent measurement of phase and amplitude noise. The instrument can measure phase noise as low as -183 dBc/Hz with a 100 MHz carrier frequency and 10 kHz offset within two minutes.

Archive | 1998

Frequency synthesizer operating according to the principle of fractional frequency synthesis

Alexander Roth

Archive | 2002

Frequency converter arrangement

Alexander Roth; Klaus Danzeisen

Archive | 2000

Arrangement for measurement of phase noise of a test specimen

Alexander Roth

Archive | 2000

Multi-heterodyne stage for a receiver or spectrum analyzer

Alexander Roth

Archive | 2008

Method and Device for Measuring Phase Noise

Wolfgang Wendler; Alexander Roth; Hagen Eckert

Archive | 2002

Arrangement for the warbling (sweeping) of a frequency synthesizer

Alexander Roth

Archive | 2005

Method for measuring the phase jitter of a high-frequency signal, and measuring unit for carrying out this method

Alexander Roth

Archive | 2014

Method and a device for measuring the amplitude noise and/or phase noise of a signal

Alexander Roth; Thomas Bechteler

Archive | 2011

Method for determination of amplitude and phase noise of measured object, involves determining amplitude/phase noise of measurement signal by cross-correlation of amplitude/phase of complex signals, respectively

Hagen Eckert; Feldhaus Gregor; Alexander Roth

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Hagen Eckert

Rohde

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Klaus Danzeisen

Rohde

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Gregor Feldhaus

Rohde

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Thomas Bechteler

Rohde

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Wolfgang Wendler

Rohde

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Feldhaus Gregor

Rohde

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Hermann Boss

Rohde

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Manfred Müller

Rohde

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