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By
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Guided Wave Technology
Denmark
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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.
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The CMS tool gives a fast and accurate
overview
of: |
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● 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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| 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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| | "Helping RF Designers one Bite at a time" | Prototype PCBs Ready for Your Components As RF Designers, we know there are times when you simply need a PCB with a filter layout to solder down your newly simulated RF filter. We have designed a set of RF Filter PCBs that should accommodate most of your lumped element filter designs. You can even purchase a PCB shield to solder down if you want to mount your design in a system. We have designed a set of filter PCBs with layouts that accommodate most Low Pass, High Pass, and Band Pass filter types. | Filter Topologies Available | Elliptic (Cauer): | Low Pass, High Pass, Band Pass | Chebyshev: | Low Pass or High Pass, Band Pass, Band Reject | Butterworth: | Low Pass or High Pass, Band Pass, Band Reject | Gaussian: | Low Pass or High Pass, Band Pass, Band Reject | PCB Shields Available for all Boards | ■ Pi- and T- section layouts available. ■ Pad sizes fit standard 0603 surface mount
components. |
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| 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. | 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, LinkΓΆping 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. |
| | 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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| Input Filter Design for Switching Power Supplies Michele Sclocchi National Semiconductor. | Kaiser Window FIR Filter Design Applet From DSP Tutor. | 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. | LCL Filter Design for PWM Rectifiers By Mike Sippola and Wolfgang L. Klampfer, Schaffner EMV AG. | 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. | 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. | 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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