Active Filter Design and Specification for Control of Harmonics in Industrial and Commercial Facilities Abstract by Mark McGranaghan, Electrotek Concepts, Inc. | Adaptive Filter Design with Ride From National Instruments. | Analog Filter Design Demystified Application note by Maxim Integrated Products. | An Intra-Disciplinary Capstone Project in Digital Filter Design By Jim Armstrong, Amy Bell, and Gail Gray, Bradley Department of Electrical and Computer Engineering, Virginia Tech. | CMSA Filter Designer Designs a Digital Filter and draws the frequency response, from Westminster Department of Electronic Systems. | Designing Active High Speed Filters From National Semiconductor. | Design an L-C Low pass or High pass Filter This web based application allows the user to design simple radio frequency filters with inductors and capacitors. | Designing Elliptic Filters With Maximum Selectivity By Celestino A Corral, Motorola Inc. | Designing Filters Using the Digital Filter Design Toolkit Application note by Rahman Jamal, Mike Cerna, John Hanks, National Instruments. | EMI Filter Design and Stability Assessment of DC Voltage Distribution based on Switching Converters Abstract from FERMILAB. | Filter Design Application note: A 2-Section, Narrow-Band Capacitive-Coupled Resonator using the LC-Reson, RF Library token (including: A Formula to undo "frequency warping") by Stephen H. Kratzet, ELANIX, Inc. | Filter Design and Analysis Filter design articles, tools, software, and books from Circuit Sage. | FIR and IIR Digital Filter Design Guide From Frequency Devices. | FIR Applet From Georgia Tech, School of Electrical & Computer Engineering. | FIR Digital Filter Design Applet From DSP Tutor. | FIR Filter Design by Windowing From Georgia Tech. | Freely Usable Digital Filter Design Applets Plus DSP Tutorials and Code Segments, created by Jeffrey D. Taft, PhD. | Geotextile Filter Design, Application, and Product Selection Guide From Ten Cate Nicolon. | 
| By | Guided Wave Technology Denmark |
 | Guided Wave Technology's Coupling Matrix Synthesis (CMS) tool facilitates synthesis of N+2 coupling matrices for Chebyshev bandpass filtering functions, with arbitrary finite-position transmission zeroes. | The CMS tool gives a fast and accurate overview of: | ● Insertion loss ● Isolation
● Group delay ● Phase ● Coupling coefficients versus ● Filter order ● Return loss ● Resonator unloaded Q ● Transmission zero positions ● Topology |
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| Guided Wave Technology is a microwave filter R&D company, specialized in development and production of passive filter prototypes and series. |
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| High-Pass Butterworth Filter Design From Besser Associates. |
| High performance and Low power FIR Filter Design Based on Sharing Multiplication By Jongsun Park, Woopyo Jeong, Hunsoo Choo, Hamid Mahmoodi-Meimand, Yongtao Wang, and Kaushik Roy, School of Electrical and Computer Engineering, Purdue University. | IIR Chebyshev Lowpass Filter Design with Hypersignal Block Diagram From National Instruments. | IIR Digital Filter Design Applet From DSP Tutor. | Implementation of High-Performance Integrated Analog Filters and Filter Banks Project by Lars Wanhammar, Electronics Systems, Linköping University. | Implementing IIR Digital Filters Application note by Amar Palacherla, Microchip. | Inline TM110-Mode Filters With High-Design Flexibility by Utilizing Bypass Couplings of Nonresonating TE 10=01 Modes Abstract by Uwe Rosenberg, Smain Amari, and Jens Bornemann. | Input Filter Design for Switching Power Supplies Michele Sclocchi National Semiconductor. | Kaiser Window FIR Filter Design Applet From DSP Tutor. | LC Band Pass Filter Circuit Overview and information about the basics of the design of an RF LC bandpass or band pass filter circuit including the design considerations and formulae (formulas) and construction tips. From Radio-electronics.com. | LC Filter Design An interactive design package for designing analogue (i.e. hardware) filters made of inductors and capacitors (Ls and Cs). | LC Filters Tutorial By Ian C. Purdie. | LC High Pass Filter Circuit The design considerations and formulae (formulas) for an LC (inductor capacitor high pass filter. From Radio-electronics.com. | LCL Filter Design for PWM Rectifiers By Mike Sippola and Wolfgang L. Klampfer, Schaffner EMV AG. | LC Low Pass Filter Circuit The design considerations and formulae (formulas) for an LC (inductor capacitor) low pass filter. From Radio-electronics.com. | Low-Pass Butterworth Filter Design Article from Besser Associates. | Lowpass Butterworth Filter Plot From RF Cafe - Office Web Components (OWC) are required for this page to function. | Low-Sensitivity, Lowpass Filter Design From National Semiconductor. | Low-Sensitivity, Highpass Filter Design with Parasitic Compensation From National Semiconductor. | Low-Sensitivity, Bandpass Filter Design with Tuning Method From National Semiconductor. |
| | Microwave Circuits, Inc. is an industry-leading provider of a wide range of high performance RF/Microwave filters, diplexers and duplexers from DC - 40 GHz. Our technical expertise extends from printed circuits, ceramics, lumped components, helicals, machined cavities, and waveguides to complex filters made by the integration of these different technologies into a single filtering device. | Products Include | • Bandpass Filters - Drop-in, RF, Microwave, Miniature, Surface Mount, Tubular | • Notch Filters - Miniature, Wideband, High Selectivity Microwave | • Highpass Filters - W/Connectors, Miniature, Surface Mount | • Diplexers & Duplexers - Combline, L/C, Surface Mount, Connectorized | • Lowpass Filters - Miniature, Surface Mount, Vertical PC Mount, Tubular | • Cavity Filters - 100 MHz - 400 MHz Tunable | • Ceramic Filters - Surface Mount | 

| We have custom filters available too! Click here for details. |
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| | Nonlinear Order Statistic Filter Design: Methodologies and Challenges Abstract by Moncef Gabbouj and Jaakko Astola, Tampere University of Technology, Finland. | Novel Designs For Elliptic Bandstop Filters From RF Design, by Philip R. Geffe. | Overvoltage Suppression Filter Design Methods Based on Voltage Reflection Theory Abstract by SangCheol Lee and KwangHee Nam. | Parks-McClellan FIR Filter Design From DSP Tutor. | Polyphase Two-Path Filter Designer in Java From University of Westminster. | Power Supply Output Filter Design - Overshoot By Jerrold Foutz, SMPS Technology. | Practical FIR Filter Design in MATLAB This tutorial white-paper illustrates practical aspects of FIR filter design and fixed-point implementation along with the algorithms available in the Filter Design Toolbox and the Signal Processing Toolbox for this purpose. | Quantized FIR Filter Design Using Compensating Zeros Article by Kishore A. Kotteri, Amy E. Bell, and Joan E. Carletta. | | RF Filters From ARRL. | We have combined the talents of FSY, Amplifonix, Salisbury Engineering, Q-bit, Magnum, Radian & EMF Systems into one world-class organization. 
| Ultra High Selectivity, to 60 dB @15% from Band-edge Low Loss Tubular Filters, <0.2 dB Low Intermod Designs, to –115 dBc Low Loss Cavities, as low as 0.25 dB High Rejection Filters, to 100 dB | 
| RF & Microwave Filters | | • Cavity Filters | • Lumped Elements | | • Ceramic Filters | • Waveguide Filters | | • Tubular Filters | • Suspended Substrate | | • Diplexers | • Triplexers |  | Spectrum Microwave also manufactures an extensive line of Amplifiers, Mixers, Oscillators, Synthesizers and RF Systems. |  | | Check out Spectrum Microwave Career Opportunities |
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| Transistor High Pass Filter A simple one transistor circuit to provide an active high pass filter. From Radio-electronics.com. | Twin T Notch Filter Design and circuit considerations for a resistor capacitor (RC) twin T notch filter. From Radio-electronics.com. | Using the Analog Devices Active Filter Design Tool Application note from Analog Devices. | Utilising the PDSP16256 Filter Design Program Application note from Zarlink Semiconductor. | VCO Inductor and External Loop Filter Design Guidelines for the AT86RF401X From Atmel Corporation. | Waveguide EM Filter Analysis and Design From Guided Wave Technology. |
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