A superconducting slot antenna combined with a bandpass filter composed of coplanar waveguide meanderline resonators has been designed and tested. Based on a new design theory for broadband impedance matching circuits, we designed a slot antenna with a small radiation resistance of 1 X impedance matched to a three-pole Chebyshev bandpass filter with 10 GHz center frequency and 0.35% fractional ...

This paper, the first of the two parts, presents coupling techniques for implementation of high order narrow-bandwidth bandpass filters from micromechanical resonators using electrical coupling elements. Active and passive coupling elements are used in this work to implement high order resonant systems from individual MEMS resonators. The concept of passive coupling of resonators using capacito...

Close-form representations for the permissible sampling rates on the first-order sampling of two-band bandpass signals are presented in this paper. It is shown that the new sampling rates are much lower than the Nyquist rate for signals with scattered passbands. A fast algorithm is developed for the symbolic operations on intervals, which makes the proposed sampling scheme more applicable. Key-...

Novel designs of circular waveguide components for lowpass, highpass, bandpass, and bandstop applications are presented. The filters are formed by cascaded TM11-mode resonator sections which share a common axis, thus preserving the polarizations of input signals due to rotational symmetry. Moreover, the filters are smaller than standard TE11-mode bandpass filters. Basic design considerations ar...

We analyze and present an input gain-varying scheme for maximizing dynamic range in a well-known Gm–C bandpass filter by both minimizing noise for small input signals, and by achieving balanced swing levels at all filter nodes for large input signals. A micropower bandpass filter suitable for use in cochlear implants and other powerconstrained biomedical applications was implemented and tested ...

Microstrip triple band tri-section bandpass filter using stepped impedance resonators (SIRs) is designed, simulated, built for the first time using hair pin structure and tested. The coupling effect between each SIR is investigated and its effect on the filter characteristics including bandwidth, attenuation is given. The simulation results, and measured results are compared and found to be ver...

The electrocardiography (ECG) artifact corrupts the surface electromyography (sEMG) signals recorded from the trunk area We assessed the effectiveness of three methods used to remove the ECG. We compared the performance of bandpass filtering methods, the commonly used mathematical morphology operator (MMO) method and the Adaptive filter on both simulationed and real sEMG data. False positive an...

A novel elliptical patch resonator for a compact bandpass filter with tunable bandwidth is presented. This bandpass filter has the advantage of great flexibility in which the center frequency can be changed easily. The bandwidth of this filter can be modified by simply changing one variable, and this makes the proposed design unique. The order of the elliptical patch resonator can be increased,...

Design, simulation, and measurement of a compact filtering microstrip antenna is presented. A feed line, two hairpin resonators, and a rectangular patch are integrated to form the filtering antenna. The elements together function as a third order bandpass filter with Chebyshev equal ripple response of 0.043 dB at midband frequency of 2.0 GHz. The rectangular patch acts not only as a radiating e...

Circular waveguide filters with improved performance are presented. They are based on TM11-mode resonators which permit the filter to be smaller than standard TE11-mode filters, preserve all polarizations due to rotational symmetry, and are flexible with respect to the design of bandpass or highpass filters. In order to demonstrate their advantages, they are compared to a standard TE11-mode des...