Abstract In this article, a compact microstrip lowpass filter (LPF) using elliptical shaped resonators with ultra-wide stopband is rendered. respect, LC equal structures of the are calculated based on formula circumference. addition, to calculate transmission zeros presented resonator, structure and its output input ratio employed. The proposed LPF has −3 dB cut-off frequency at 1.50 GHz bandwi...

Filter design specifications can be manifest in all manner of necessity, whether they are high-pass, low-pass, band-pass, or stop-band filters. In addition, the parameters for such filters are defined for a very specific application. A design for a lowpass filter with a pass-band of 2k Hz and a stop-band of 4k will be discussed. The further properties of the filter are to allow for a 48 dB drop...

In a real situation, digital filters are usually implemented via the two’s complement arithmetic because subtraction can be implemented easily via addition. However, the two’s complement arithmetic involves a periodic discontinuous nonlinear function, and the dynamics of digital filters could be very complicated even when no input signal is applied. Limit cycle and chaotic behaviors could occur...

Can the foreign accent of a speaker be recognized based on suprasegmental temporal information? For a perception experiment we created stimuli based on German sentences read by six French and six English speakers. These foreignaccented sentences were manipulated by (1) applying a lowpass filter with a cutoff frequency of 300 Hz and (2) applying the same lowpass filter and monotonizing F0. In a ...

Voltage/current-mode universal biquadratic filter using single plus-type second-generation current conveyor (CCII), two capacitors and two resistors has been presented. The proposed voltage-mode circuit has three inputs and two outputs and can realize all the standard filter functions, which are, lowpass, bandpass, highpass, notch and allpass filters, without changing the circuit topology. One ...

This paper proposes a new class of Hilbert pairs of almost symmetric orthogonal wavelet bases. For two wavelet bases to form a Hilbert pair, the corresponding scaling lowpass filters are required to satisfy the half-sample delay condition. In this paper, we design simultaneously two scaling lowpass filters with the arbitrarily specified flat group delay responses at ω = 0, which satisfy the hal...

General methods of displacement measurement are to use LVDT, tiltmeter, or laser deflection meter. But these methods can’t be applied effectively if bridge height is so high that the installation of sensor is difficult. So the great part of in these cases, the reliability and accuracy of measured results are uncertain usually. To overcome this problem, in this paper, the two techniques for calc...

This paper uses the UEP approach for the construction of wavelet tight frames with two (anti-) symmetric wavelets, and provides some results and examples that complement recent results by Q. Jiang. A description of a family of solutions when the lowpass scaling filter is of even-length is provided. When one wavelet is symmetric and the other is antisymmetric, the wavelet filters can be obtained...