Frequency Determination Method of the Sweep-Generator of the Panoramic Frequency Characteristics Meter
Journal Title: Вісник НТУУ КПІ. Серія Радіотехніка, Радіоапаратобудування - Year 2017, Vol 0, Issue 70
Abstract
Usage of the panoramic meters of frequency-response characteristics or frequency-response characteristic tracers significantly increases work productivity of adjusters and operators of radioelectronic and telecommunication systems. One of the main functions of the frequency-response characteristic tracer is formation of frequency-response scale, that is determining sweep generator frequency, which is a part of it. High-quality frequency-response characteristic tracers must have little error of scale bars formation in the broad frequency range, automatically and independently define their frequency of the swing band of the sweep generator. There is a basic structural scheme of the sweep generator frequency meter with a single-channel frequency-time converter, the main units of which include two reference-frequency generators and stroboscopic mixer. It is proved that usage of reference-frequency generators on quartz-crystal resonators reduces to zero the error component of frequency defining, provided by frequency instability of the generator. To compensate the deflection non-linearity influence of the sweep generator on frequency determination accuracy, the basic scheme of the meter was added with the third reference-frequency generators, as well as the operating procedure of the control and evaluation unit was changed. The evaluating formulas were received for the sweep generator frequency, on their basis the mathematical models for deflection non-linearity cases were created. As a result of the analysis it was found that in the new meter in comparison with the basic one the error component of frequency determination of the sweep generator caused by deflection non-linearity is decreased by times. Interrelation between the multiplication factor and deflection non-linearity coefficient was found, it can be used by designing of the sweep generator frequency meter and formation of the requirements to frequencies of reference-frequency generators. The developed meter with a single-channel frequency-time converter can be used in high-frequency characteristic tracers of 20 GHz and higher range. Its advantages include: simplicity, absence of fast-speed units, except for the stroboscopic mixer, transfer of measurements to great time range, that is to low frequencies.
Authors and Affiliations
S. Kononov, A. Nehur
Keywords
Related Articles
- EP ID EP308204
- DOI 10.20535/RADAP.2017.70.23-29
- Views 62
- Downloads 0
Efficiency of Microwave Oscillators Phase-Noise Reduction Advices.
The phase-noise reduction advices as the result of linear and nonlinear analysis and the efficiency of their oscillators design applications are consided.
Evolution of a lumileds – from "cool light" Loseva to lighting of streets (part 1)
Antipenko R.V., Rudenko N.M., Silakova T.T.In review are considered history development of semiconductor lumileds, done analysis up-to-date market lumileds, a new material and technology, are showed world tendencies and...
Suppression of bulk waves in surface acoustic wave filter
Introduction. One of the dominant second order effects in devices based on surface acoustic waves (SAW) is the excitation of parasitic bulk acoustic waves (BAW). Attention is drawn to the lack of effectiveness of traditi...
About quantum mechanical and classical interpretation of the photon’s wave properties
The results of application of Schrödinger equation and Heisenberg‘s uncertainty relation for the photons wave properties description as material particles are presented. Ψ-function of photon as a solution of Schrödinger...
Research of Direct Digital Correlative-Interferometric Radio Direction Finder with Double Correlation-convolutional Processing
Introduction. In this article the unsettled part of the general problem of the research of direct digital methods of correlative-interferometric direction-finding was solved. The purpose of the article is to optimize the...