SYNTHESIS OF QUASI BAND LADDER TRANSFORMING HIGH ORDER FILTERS

High-order lowpass and bandpass elliptic log-domain ladder filters

This paper reports a multitude of HSPICE simulation results corresponding to high-order (fifth, sixth and tenth) differential classA log-domain lowpass and bandpass ladder filter topologies. The designs are elliptically approximated and were obtained by means of an appropriately extended version of the XFILTER filter compiler. The non-desirable effect of the BJT finite beta is shown; circuit mo...

Analytical Synthesis of Current Mode High-Order OTA-C Filters

Abstract: This paper presents a new general synthesis method for high-order current mode Operational Transconductance Amplifiers and Capacitors, (OTA-C) filters. The method is based on the analytical solution of a single, nth-order generic filter transfer function and the generation of n, number of realizable transfer functions implemented using lossless integrators. The method provides systema...

Synthesis of Optical Band-pass Chebyshev Filters

Log-Domain Filters Based on LC Ladder Synthesis

A design method is proposed for the synthesis of linear, high-order, continuous-time filters using a unique translinear integrator circuit. Unlike previous attempts at incorporating translinear circuits into filter design, the proposed theory makes explicit use of the exponential nature of the bipolar transistor. This technique is based on the operational simulation of LC ladders. A 5th-order C...

High-Order Micromechanical Electronic Filters

Third-order, micromechanical bandpass filters comprised of three folded-beam resonators coupled by flexural mode springs are demonstrated using an IC-compatible, polysilicon surface-micromachining technology. The use of quarter-wavelength coupling beams attached to resonators at their folding-trusses is shown to suppress passband distortion due to finite-mass nonidealities, which become increas...