Recursive PLL based on the Measurement and Processing of Time

Abstract

This paper describes one recursive model of the Phase Locked Loop (PLL) of the second order based on the measurement and processing of the time difference between the input and output periods. The stability and the other conditions, under which the described system can have the properties of a PLL, are investigated using the Z transform analyses. Computer simulation of PLL is introduced in order to give better insight into the PLL characteristics and to confirm the mathematical analyses too. Made analysis shows that PLL is suitable for the wide range of applications. For the corresponding system parameters, PLL possesses the power noise rejection ability. For some other system parameters this PLL possesses the power tracking ability. It can also be used for the measurement of the period of the input signal in the noise environment. The oscilloscope picture of the input and output signals recorded on the realized PLL is presented.

Management of Giant Ano-Vulvar Condyloma in a Structure with Limited Resources

“…Electrocoagulation should be reserved for the treatment of GAC in its minor forms because the risk of haemorrhagy is major in advanced forms [18]. CO 2 laser vaporization has also been described as a therapeutic method in GAC with 70% healing rates for a single session [2] [30]. But the Yag laser appears to be more efficient [31].…”

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A Frequency Multiplier Based on Time Recursive Processing

“…The Time Recursive Processing (TRP) approach is based on the measurement and processing of the input and output periods and the time differences between them. As stated in [1][2][3][4][5][6][7][8][9][10], this approach is suitable for the development of different kinds of TRP Phase Locked Loops (TRP PLL) and TRP Frequency Locked Loops (TRP FLL), which possess some new additional properties in comparison to the classic PLL and FLL. Due to these new properties, the development of new kinds of circuits and applications is provided.…”

“…The applications of TRP PLL and TRP FLL for noise rejection are described in [5][6][7]. A wide range of tracking and prediction applications is described in [5,6,8]. Most of the algorithms described in [1][2][3][4][5][6][7][8][9][10] are suitable for usage in a software form.…”

“…A wide range of tracking and prediction applications is described in [5,6,8]. Most of the algorithms described in [1][2][3][4][5][6][7][8][9][10] are suitable for usage in a software form. All electronics TRP applications can be realized in a software form that can be applied anywhere.…”