a log-domain current-mode true rms-to-dc converter based on a novel synthesis of a simplified current-mode low pass filter and a two-quadrant squarer/divider is presented. the circuit employs floating gate mos (fg-mos) transistors operating in weak inversion region. the converter features low power(<1.5uw), low supply voltage (0.9v), two quadrant input current, immunity from body effect, low ci...

A new circuit topology realizing a first-order currentmode all-pass filter is proposed using two dual-output second generation current conveyor and two passive components. The circuit possesses low-input and high-output impedance, which makes it ideal for current-mode systems. The proposed circuit is verified through PSPICE simulation results. Keywords—active filter, all-pass filter, current-mo...

This paper presents an optimal design of linear phase digital low pass finite impulse response (FIR) filter using Novel Particle Swarm Optimization (NPSO). NPSO is an improved particle swarm optimization (PSO) that proposes a new definition for the velocity vector and swarm updating and hence the solution quality is improved. The inertia weight has been modified in the PSO to enhance its search...

Complete CODEC and FILTER system including: PCM ANALOG TO DIGITAL AND DIGITAL TO ANALOG CONVERTERS POWERFUL ANALOG FRONT END CAPABLE TO INTERFACE DIRECTLY: Microphone Dynamic, Piezo or Electrete Earpiece down to 100Ω or up to 150nF Loudspeakerdown to 50Ω or Buzzer up to 600nF. TRANSMIT BAND-PASS FILTER ACTIVE RC NOISE FILTER RECEIVE LOW-PASS FILTER WITH SIN X/X CORRECTION MU-LAW OR A-LAW SELECT...

The property that describes the neuron's preferred response to inputs of injected current is called resonance. To produce resonance, a cell must have two requirements: a low-pass filter (attenuates high frequencies) and a high-pass filter (attenuates low frequencies). The neuron whose resonance frequency we wish to determine is the PY neuron of the STNS (stomatogastric nervous system) of Cancer...

A new approach to the non-expansive two band decomposition of finite length signals is introduced. The technique is based on the time-varying perfect reconstruction filter banks concept. In this approach the main analysis filter bank is instantaneously switched, at the signal boundaries, to a shorter filter bank: the D1 or Haar filter bank. The technique can be applied to all types of two band ...

In this paper, a simple and intuitive technique for analyzing clock jitter effect on bandpass Continuous-Time SigmaDelta (Σ∆) modulators is introduced. The power spectral density of the jitter noise for different feedback DAC shapes are derived and compared. It is shown that DAC output signal shapes used to reduce clock jitter sensitivity in lowpass Continuous-Time Σ∆ modulators may not be suit...

As we know that the conventional filter synthesis procedure is adequate only for the relatively narrow band filters and is not suitable for the Wideband and Ultra wideband filters .Therefore we are intend to design a Ultra Wideband filter. In this study a compact Ultra Wide Band pass filter consisting of quarter wave resonant conductor like micro strip lines is proposed to design. We have to in...

Tree-structured complementary filter banks are developed with transfer functions that are simultaneously all-pass complementary and power complementary. Using a formulation based on unitary transforms and all-pass functions, we obtain analysis and synthesis filter banks which are related through a transposition operation, such that the cascade of analysis and synthesis filter banks achieves an ...

In this paper, a low voltage modified current backward transconductance amplifier (MCBTA) and a novel first-order current-mode (CM) all-pass filter are presented. The MCBTA can operate with ±0.9 V supply voltage and the total power consumption of MCBTA is 1.27 mW. The presented all-pass filter employs single MCBTA, a grounded resistor and a grounded capacitor. The circuit possesses low input an...