A 14-Gb/s clad dielectric waveguide link using 73GHz carrier frequency with a stochastic RF phase synchronization system in 40nm CMOS

2018 ◽  
Author(s):  
Joon-Yeong Lee ◽  
Hyosup Won ◽  
Ha-Il Song ◽  
Hanho Choi ◽  
Bongjin Kim ◽  
...  
Keyword(s):  
Carrier Frequency ◽  
Dielectric Waveguide ◽  
Phase Synchronization ◽  
Synchronization System

scholarly journals SYNTHESIS AND ANALYSIS OF THE PHASE SYNCHRONIZATION SYSTEM UNDER THE REDUCTION OF PERMANENT DYNAMIC ERRORS IN THE CARRIER FREQUENCY TRACKING MODE

2020 ◽  
pp. 90-99
Author(s):  
O. L. Turovsky ◽  
O. A. Khakhlyuk
Keyword(s):  
Control Systems ◽  
Carrier Frequency ◽  
Open Channel ◽  
Phase Synchronization ◽  
Combined System ◽  
Synchronization System ◽  
Radio Engineering ◽  
Frequency Discriminator ◽  
Dynamic Errors ◽  
And Control

The successful solution of the problem of further improving the efficiency of communication systems largely depends on the quality of operation of systems and devices that are part of them. Phase synchronization systems are widely implemented in various radio engineering devices of communication, radar and control technology, as well as in the device of precise magnetic recording. In particular, in phase-coherent telecommunications and control systems, they are used to restore the carrier and clock frequencies and for coherent demodulation of analog and digital signals with angular modulation. The issues of increasing the efficiency of the phase synchronization system of phase-coherent telecommunication and control systems in radio engineering devices are considered in the work. Namely, the results of synthesis and analysis of the scheme of construction of the combined system of phase synchronization under the condition of reduction of constant dynamic errors during monitoring of the carrier frequency, the phase of which is modulated by a deterministic Doppler signal are presented. As a result of research it is established that the synthesis of the open channel in the combined synchronization systems allows to realize them on invariant schemes which provide reduction of constant dynamic errors by increase of the order of astatism. The use as an open communication frequency discriminator, allows to increase the order of astatism of the combined system synchronization system to the second order. The open channel is made in the form of parallel (serial) connection of two links of the frequency discriminator with the proposed transfer function allows to increase the order of astatism to the third and higher order and does not affect the stability of the system. The analysis of the proposed schemes showed that the effect on the phase error dispersion of the synchronization system can be achieved by changing the parameters of the broken link of the scheme of construction of the specified system.

Non-data-aided ML carrier frequency and phase synchronization in OFDM systems

2001 ◽  
Vol 12 (2) ◽  
pp. 83-94 ◽  
Author(s):  
Erdal Panayirci ◽  
Costas N. Georghiades ◽  
Ayesha T. Huq
Keyword(s):  
Carrier Frequency ◽  
Phase Synchronization ◽  
Ofdm Systems

Phase synchronization system receiver module for the mid-frequency Square Kilometre Array

2020 ◽  
Vol 6 (04) ◽  
Author(s):  
Skevos F. E. Karpathakis ◽  
Charles T. Gravestock ◽  
David R. Gozzard ◽  
Thea R. Pulbrook ◽  
Sascha. W. Schediwy
Keyword(s):  
Phase Synchronization ◽  
Synchronization System ◽  
Square Kilometre Array ◽  
Receiver Module

scholarly journals The Phenomenon of Bistable Phase Difference Intervals in the Times-Frequency Vibration Synchronization System Driven by Two Homodromy Exciters

2020 ◽  
Vol 2020 ◽  
pp. 1-24
Author(s):  
Lingxuan Li ◽  
Xiaozhe Chen
Keyword(s):  
Phase Difference ◽  
Rotational Speed ◽  
Phase Synchronization ◽  
Perturbation Parameter ◽  
Vibration System ◽  
Synchronization System ◽  
Motion Trajectories ◽  
Frequency Capture ◽  
Perturbation Parameters ◽  
The Times

A vibration system with two homodromy exciters operated in different rotational speed is established to investigate whether the phenomenon of bistable phase difference intervals exists in the times-frequency vibration synchronization system. Some constructive conclusions are proposed. (1) By introducing an average angular velocity perturbation parameter ε0 and two sets of phase difference perturbation parameters and ε2, the frequency capture criterion and the necessary criteria for realizing the times-frequency vibration synchronization are derived. The corresponding stability analysis is carried out. (2) By the theoretical analysis and experiments, it is verified that the times-frequency vibration synchronization system exists the phenomena of bistable phase difference interval. That is, the phase differences between the two homodromy exciters are stable around 180 degrees when they are located at a short distance; the antiphase synchronization phenomenon appears. On the contrary, they are stable around 0 degrees at the in-phase synchronization state. (3) Because of the two homodromy exciters operating in the different rotational speed, the vibration system obtains relatively complex compound motion trajectories; the corresponding application is investigated by adding a feeding material chamber. The times-frequency vibration synchronization system can be used to design the vibration mill for reducing its low-energy zone and developing chaotic mixing equipment for obtaining a better mixing effect.

scholarly journals Implementation of a Phase Synchronization Scheme Based on Pulsed Signal at Carrier Frequency for Bistatic SAR

Sensors ◽  
2020 ◽  
Vol 20 (11) ◽  
pp. 3188
Author(s):  
Yafeng Chen ◽  
Da Liang ◽  
Haixia Yue ◽  
Dacheng Liu ◽  
Xiayi Wu ◽  
...  
Keyword(s):  
Carrier Frequency ◽  
Phase Synchronization ◽  
Time Slot ◽  
Test Results ◽  
Factors Affecting ◽  
Bistatic Sar ◽  
Advanced Phase ◽  
Ground Validation ◽  
Bistatic Synthetic Aperture Radar ◽  
Synchronization Scheme

Phase synchronization is one of the key technical challenges and prerequisites for the bistatic synthetic aperture radar (SAR) system, which can form a single-pass interferometry system to perform topographic mapping. In this paper, an advanced phase synchronization scheme based on a pulsed signal at carrier frequency is proposed for a bistatic SAR system and it is verified by a ground validation system. In the proposed phase synchronization scheme, the pulsed signal at carrier frequency is used for phase synchronization link, and it is exchanged by virtue of a time slot between radar signals. The feasibility of the scheme is proven by theoretical analysis of various factors affecting the performance of phase synchronization, and the reliability of the scheme is verified by the test results of the ground validation system.

scholarly journals TAKING INTO ACCOUNT THE PHASE INSTABILITY OF GENERATORS CAUSED BY THE INFLUENCE OF IONIZING RADIATION OF SPACE ON THE PARAMETERS OF CARRIER FREQUENCY SYNCHRONIZATION SYSTEMS

2020 ◽  
Vol 10 (4) ◽  
pp. 38-42
Author(s):  
Oleksandr Turovsky ◽  
Sergei Panadiy
Keyword(s):  
Ionizing Radiation ◽  
Carrier Frequency ◽  
Outer Space ◽  
Open Communication ◽  
Phase Instability ◽  
Synchronization System ◽  
Phase Errors ◽  
Carrier Frequency Synchronization ◽  
Closed Type ◽  
Communication Synthesis

The article investigates the possibilities of closed and combined synchronization systems for operation in the conditions of phase instability of generators caused by the influence of ionizing radiation of outer space. The inconsistency of the closed-type synchronization system with respect to minimizing the variance of phase errors and increasing the dynamics during carrier frequency tracking is shown. For the combined synchronization system, the article clarifies the process of open communication synthesis and proposes analytical dependences that allow the technique of open communication synthesis to be specified taking into account the phase instability of generators caused by the ionizing radiation of space.

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