Ulrich L. Rohde

Chairman of Synergy Microwave Corp

Ulrich L. Rohde is Chairman of Synergy Microwave Corp., Paterson, NJ and President of Communications Consulting Corp. Rohde studied electrical engineering and radio communications at the universities of Munich and Darmstadt, Germany. He holds a PhD in electrical engineering (1978) and an Sc.D. (hon., 1979) in radio communications.  In 2004, he obtained a Dr.-Ing. Degree from the University in Berlin, Germany. In 2011, Rohde earned the Prof. Dr.-Ing. habil. degree from the University of Cottbus, Germany. Rohde has published more than 200 scientific papers and either contributed to or written a large number of books.

Articles by Ulrich L. Rohde
Searching For Low-Phase-Noise Synthesizers
A hybrid frequency-synthesis approach provides low-phase-noise signals both close to and far from the carrier.
Oscillators Cover Multiple Bands
This new class of oscillator synchronously generates the signals needed for multiple-band, multimode communications with and without switching resonators or using multipliers.
DROs Drop Phase Noise
A new line of dielectric resonator oscillators (DROs) offers excellent spectral purity at microwave frequencies through 10 GHz and higher.
Method Minimizes Noise In VCXOs
The trick is combining self-injection locking with mode-coupling techniques to shave the size, cost, and phase noise from voltage-controlled crystal oscillators (VCXOs).
Reference Sources Reduce Size, Noise
These free-running and phase-locked reference sources can be supplied in standard and custom frequencies through 3 GHz, at a fraction of the size and power consumption of multiplied references.
Active Inductors Tune Low-Noise VCOs
Dynamic-phase-injection techniques help to tame tunable active inductors for use in miniature monolithic VCOs that provide low phase noise while operating with low power consumption.
VCOs Tune Miniature Synthesizers To 12 GHz
Using a hybrid approach based on miniature SAW and printed-circuit resonators, these tiny VCOs measure just 0.3 x 0.3 in. but can tune from 100 MHz to 12 GHz.
Miniature VCOs Shrink Wideband Synthesizers
Shrinking the size of planar resonators has led to extremely compact oscillators that are the building blocks for tiny, high-performance, PLL-based frequency synthesizers.
Rohde & Schwarz Celebrates 75 Years
From modest roots, the company has become a leading supplier of test-and-measurement equipment from audio through millimeter-waves as well as radio broadcast transmitters.
Planar Resonators Arm Tunable Oscillators
Voltage-controlled oscillators (VCOs) based on novel self-injection-locked compact coupled planar resonators (CCPRs) feature high Qs and low phase noise at microwave frequencies.
Planar Resonators Arm Tunable Oscillators
Voltage-controlled oscillators (VCOs) based on novel self-injection-locked compact coupled planar resonators (CCPRs) show great promise as high-Q sources for wireless communications.
Large-Signal Approach Yields Low-Noise VHF/UHF Oscillators
In contrast to traditional small-signal approaches, the use of large-signal, time-domain design techniques helps deliver low-noise grounded-base oscillators for VHF/UHF applications.
Large-Signal Approach Yields Low-Noise VHF/UHF Oscillators
In contrast to traditional small-signal approaches, the use of large-signal, time-domain design techniques helps deliver low-noise grounded-base oscillators for VHF/UHF applications.
Technique Trims VCXO Phase Noise
This patented circuit approach can improve the phase-noise performance and frequency stability of even low-cost voltage-controlled crystal oscillators.
Cost-Effective VCOs Replace Power-Hungry YIGs
These innovative voltage-controlled oscillators make the most of multi-coupled slow-wave planar resonators to achieve low phase-noise performance at a fraction of the size and power of YIGs.
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