Analysis of Various Methodologies for Generation of Microwave Chaos Spectrum and improved microwave colpitts oscillator

نویسندگان

  • Babita Saxena
  • Alok Dubey
  • Sandeep Shrivastava
چکیده

This paper describes various methods of generation of microwave chaos signal spectrum origin from certain continuous dynamical systems – that may exhibit dynamics of signals that are highly sensitive to initial conditions. Many side lobes in chaos signal spectrum which makes the unambiguous detection difficult because of the spectrum of the chaotic signal is not very fat and smooth, with pulsation peaks in it, has been reduced and hence spectrum is improved in some extent using optimum algorithm for parameter selection of microwave colpitts oscillator, and adjusting them for getting more flat spectrum. This happens even though these systems are deterministic, meaning that their future dynamics are fully defined by their initial conditions, with no random elements involved. This paper also describe whole scenario of chaotic signals and system generates these signals.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Ultra-wide Band Noise-signal Radar Utilizing Microwave Chaotic Signals and Chaos Synchronization

In this paper, we present a new scheme for the realization of a wide-band noisesignal RADAR utilizing wide-band chaotic signal generated from microwave chaotic Colpitts oscillator. System simulations show that such RADAR can still work in an environment when the signal-to-noise ratio (SNR) is −20 dB.

متن کامل

Nonlinear Dynamics of a BJT Based Colpitts Oscillator with Tunable Bias Current

12 Abstract—The effect of bias current variation in the dynamics of a conventional BJT based Colpitts Oscillator (CO) has been thoroughly examined in this paper. After formulating a suitable ac equivalent model of the CO taking care of the dc bias current, the dynamics of the system has been numerically studied. It is observed that in a CO circuit with given design parameter, a periodic oscilla...

متن کامل

RF and Microwave Oscillator Design using p-HEMT Transistor

This paper presents a systematic approach to designing negative-resistance and Colpitts oscillators using p-HEMT transistor. Various models such as, common source and common gate configuration in negative-resistance oscillators, common source series feedback in Colpitts oscillator is selected to analyze the output power and stability presented by the p-HEMT transistor. These oscillators are des...

متن کامل

Back-Stepping Sliding Mode Controller for Uncertain Chaotic Colpitts Oscillator with no Chattering

By introducing Colpitts oscillator as a chaotic system, this paper deals with back-stepping control method and investigates the restrictions and problems of the controller where non-existence of a suitable response in the presence of uncertainty is the most important problem to note. In this paper, the back-stepping sliding mode method is introduced as a robust method for controlling nonlinear ...

متن کامل

Investigation and Design of Low Phase Noise and Wideband Microwave VCOs

This thesis studied the design techniques of low phase noise and wideband microwave voltage controlled oscillators (VCOs) used for point-to-point radio applications. First, basic oscillator theories as well as different technologies were reviewed. Then two Cband MMIC VCOs were designed in a commercial InGaP HBT foundry process with different topologies, namely the balanced Colpitts and the bala...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2013