全部文献期刊学位论文会议报纸专利标准年鉴图书|学者科研项目
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作者:F. Zaplata , M. Kasal
来源:[J].Radioengineering(IF 0.687), 2015, Vol.24 (1), pp.178-184DOAJ
摘要:The Fast Fourier Transform is a very efficient algorithm for the Fourier spectrum estimation, but has the limitation of a linear frequency scale spectrum, which may not be suitable for every system. For example, audio and speech analysis needs a logarithmic frequency scale d...
作者:O. Baran , M. Kasal
来源:[J].Radioengineering(IF 0.687), 2010, Vol.19 (4), pp.618DOAJ
摘要:Our work deals with studies of a noise behavior in space communication systems. Two most important noise types the additive thermal noise and the multiplicative phase noise, respectively, are included. A simple model of the narrowband communication system is created and simulated...
作者:P. Vagner , M. Kasal
来源:[J].Radioengineering(IF 0.687), 2010, Vol.19 (3), pp.392DOAJ
摘要:This paper deals with a defected ground structure (DGS) open-loop resonator analysis and bandpass filter design, using coupled DGS and microstrip resonators. The combination of DGS and microstrip resonators allows using top and bottom sides of the microwave substrate, therefore t...
作者:O. Baran , M. Kasal
来源:[J].Radioengineering(IF 0.687), 2010, Vol.19 (1), pp.141DOAJ
摘要:Our work is focused on the investigation of an influence of an additive thermal noise and a multiplicative phase noise in space communication chains. The most important properties of both noise types are summarized. The main concern of this paper is on the multiplicative phase no...
作者:F. Zaplata , M. Kasal
来源:[J].Radioengineering(IF 0.687), 2013, Vol.22 (4), pp.1211-1217DOAJ
摘要:This paper shows the solution of time stamp software defined receiver integration into low cost com-mercial devices. The receiver is based on a general pur-pose processor and its analog to digital converter. The amplified signal from a narrow-band antenna is connected to the conv...
作者:M. Kasal , V. Husek , J. Halamek
来源:[J].Radioengineering(IF 0.687), 1993, Vol.2 (2)DOAJ
摘要:Sensitivity is one of the fundamental parameters of the Nuclear Magnetic Resonance experiment. It depends particularly on the coil and impedance matching of the resonance circuit of the probe to the input amplifier. However, sensitivity is also influenced by the noise of the rece...
作者:M. Kasal , J. Sebesta
来源:[J].Radioengineering(IF 0.687), 1999, Vol.8 (1)DOAJ
摘要:To build a satellite can be a dream for many engineers. We are happy that we can participate in the AMSAT PHASE 3D project. Our responsibility is very high because one of our on-board receivers is the main one of the command link and will never be switched off. The project is als...
作者:M. Kasal , J. Sebesta
来源:[J].Radioengineering(IF 0.687), 2005, Vol.14 (3), pp.37-40DOAJ
摘要:This paper deals with simplification and improvement of data timingsynchronization algorithms. Timing error synchronizers are usually themost complicated subsystems in the demodulator, and limit the DSPtechnique used for the high-rate application. This article is focusedon f...
作者:M. Kasal , P. Kutin
来源:[J].Radioengineering(IF 0.687), 2006, Vol.15 (2), pp.6-11DOAJ
摘要:A novel method for the optimization of the active frequency multiplier utilizing the harmonic terminating impedances with the defected ground structures (DGS) has been developed. Furthermore, a new type of the low-pass filter with DGS for the higher harmonic suppression will be r...
作者:M. Kasal , J. Spacek
来源:[J].Radioengineering(IF 0.687), 2007, Vol.16 (4), pp.24-32DOAJ
摘要:The presented paper is dedicated to the low rate telemetry transmission simulator. The basic concept of the system uses the carrier (DSB) and subcarrier (BPSK). The research is focused on the AWGN and carrier phase noise influence. Presented system can be extended with the descri...

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