Proceedings ArticleDOI
Towards a denser frequency grid in phase measurements using mixer-based receivers
Diogo C. Ribeiro,Pedro Cruz,Nuno Borges Carvalho +2 more
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TLDR
A new method to achieve a dense frequency grid in synchronous phase measurements is presented and it is suggested that this technique is suitable to use with instruments that employ a mixer-based internal architecture.Abstract:
In this paper a new method to achieve a dense frequency grid in synchronous phase measurements is presented. This technique is suitable to use with instruments that employ a mixer-based internal architecture. Contrary to other works, the grid density is not being enhanced through the increase of the comb-generator (CG) output tone density, nor through the use of successive multi-sine waveforms. The technique proposed uses the same reference signals for any band measurable by the instrument. Besides, the power of each CG output tone is also kept at a high level. The tradeoff is the requirement for wide-band receivers, which are already commonly present in modern instrumentation. Multi-sine phase measurements performed with a nonlinear vector network analyzer (NVNA) will be compared with results obtained using the new technique (and performed by commercial mixer-based receivers). The comparisons will be used to validate the suggested method.read more
Citations
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Journal ArticleDOI
Characterization for Multiharmonic Intermodulation Nonlinearity of RF Power Amplifiers Using a Calibrated Nonlinear Vector Network Analyzer
Yichi Zhang,Xiaotao Guo,Zhao He,Hui Huang,Huang Jianming,Meining Nie,Lifeng Wang,Yang Aining,Zhongjun Lu +8 more
TL;DR: In this paper, a nonlinear vector network analyzer (NVNA) testbed with a new phase calibration technique was used to characterize the multiharmonic intermodulation nonlinearity of a radio frequency (RF) power amplifier (PA) under a large-signal modulated input.
Journal ArticleDOI
Extension of NVNA Baseband Measurement for PA Characterization Under Complex Modulation
TL;DR: This work investigated the measurement techniques of the nonlinear vector network analyzer (NVNA) test bench, to fully characterize the non linear behavior of radio frequency (RF) power amplifiers (PAs) driven by complex modulated signals.
Journal ArticleDOI
Precisely Synchronized NVNA Setup for Digitally Modulated Signal Generation and Measurement at 5G-Oriented Millimeter-Wave Test Bands
Yichi Zhang,Nian Fushun,Guoping Yuan,Baoguo Yang,Mingfei Yang,Shengli Liang,Meining Nie,Lifeng Wang,Wei Zhao,Huang Jianming,Zhao He,Xiaotao Guo +11 more
TL;DR: A novel nonlinear vector network analyzer (NVNA) setup for generating and measuring digitally modulated signals at millimeter-wave test bands with the use of a user-defined multisine signal as the phase reference to enable more precise synchronization and denser spectral grid.
Journal ArticleDOI
Characterizing Dual-Band RF PAs Using Wideband Synchronization and Calibration Techniques of Nonlinear Vector Network Analyzer
TL;DR: In this paper, a nonlinear vector network analyzer (NVNA)-based technique for characterizing the harmonic and intermodulation nonlinearity of dual-band radio frequency (RF) power amplifiers is presented.
Journal ArticleDOI
NVNA Test Bench for Characterizing In-Band Full-Duplex Performance of Millimeter-Wave Antennas
TL;DR: A novel nonlinear vector network analyzer (NVNA) setup for charactering the in-band full-duplex (IBFD) performance of millimeter-wave antenna systems and can be widely used for fifth-generation (5G)-oriented over-the-air test of IBFD antenna systems.
References
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Journal ArticleDOI
Designing multisine excitations for nonlinear model testing
TL;DR: This paper deals with the design of bandpass multisine excitations appropriate for microwave nonlinear model testing and shows that if the output power spectral density of a general nonlinear dynamic system is used as a metric for signal similarity, then it is possible to derive a set of statistical characteristics to be approximated.
Journal ArticleDOI
NVNA versus LSNA: enemies or friends?
W. Van Moer,L. Gomme +1 more
TL;DR: The NVNA and the LSNA are powerful instruments which allow to measure the full nonlinear behavior of microwave devices as mentioned in this paper, and they are super-oscilloscopes which are able to measure absolute time domain waveforms.
Journal ArticleDOI
Comb-Generator Characterization
TL;DR: In this paper, the authors characterize a 50 GHz comb generator with a sampling oscilloscope and measure the output spectrum with a standard uncertainty of 0.1 dB and 0.5deg.
Journal ArticleDOI
Dense Spectral Grid NVNA Phase Measurements Using Vector Signal Generators
TL;DR: A modified NVNA is presented to effectively obtain the phase spectra of modulated RF signals with spectral resolution of 1-100 kHz and a multistep phase calibration method is proposed for multiplying the calibratable tone numbers in practice.
Proceedings ArticleDOI
Next-generation comb generators for accurate modulated measurements
TL;DR: In this article, a new approach is presented which combines two dividers, a pseudo-random bit sequence (PRBS) generator and a logical "and" operation which triggers a pulse generating unit.