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Analog & DSP, FIR Electronic Filters - Frequency Devices

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   Filters, Low Pass

A low-pass filter is a filter that passes low frequencies well, but attenuates (or reduces) frequencies higher than the cutoff frequency. The actual amount of attenuation for each frequency varies from filter to filter. It is sometimes called a high-cut filter, or treble cut filter when used in audio applications.

A high-pass filter is the opposite, and a bandpass filter is a combination of a high-pass and a low-pass.

The concept of a low-pass filter exists in many different forms, including electronic circuits (like a hiss filter used in audio), digital algorithms for smoothing sets of data, acoustic barriers, blurring of images, and so on. Low-pass filters play the same role in signal processing that moving averages do in some other fields, such as finance; both tools provide a smoother form of a signal which removes the short-term oscillations, leaving only the long-term trend.



Platinum Partners
Frequency Devices, Inc.
Bronze Partners
Aeroflex Laboratories Inc
Allen Avionics, Inc.
Alligator Technologies
Alpha Components
Amecon, Inc.
American Trans-Coil Corp.
Analogic DCP
Anatech Electronics, Inc.
Auxora Inc
AVA Electronics Corp.
Avens Signal Equipment Corp.
AVX Corporation
AXTAL GmbH & Co. KG
Barr Associates Inc.
Betatronics, Inc.
BH Electronics, Inc.
Branmag Inc
C-MAC Industries Inc
California Micro Devices, Corp.
Chesterfield Products, Inc.
Coast Magnetics
Coaxial Dynamics
Coil-Q Corp.
Coilcraft
Communication Coil Inc.
Communications & Energy Corp.
ComNav Engineering, Inc.
Compac Development Corp.
Connecticut Microwave Corp.
Control Concepts Corporation
Corning Frequency Control
Data Delay Devices
Dataforth Corp.
Delta Microwave Inc
DL Instruments LLC
E G & G Optoelectronics-Reticon
E.A.G.L.E., Inc.
EK Magnetics
Electrocom Industries
Electrocube, Inc.
Electronic Specialists Inc.
Elpac Power Systems
EMI Filter Co.
EMI Solutions LLC
Emission Control Ltd.
Engineered Components Company
Faraday Technology
Filter Concepts Inc.
Filtronetics, Inc.
Fox Electronics
Freed Transformer Company, Inc.
Gowanda Electronics Corp.
HALO Electronics, Inc.
Hisonic, Inc.
ILSI America, Inc.
Inductive Technologies
Integrated Microwave Corporation
Integration Assocs. Inc.
Johanson Technology
K & L Microwave, Inc.
Kappa Technologies, Inc.
KDI/Triangle Corp.(A MCE Co.)
Kemet Electronics Corp.
KOA Speer Electronics, Inc.
KR Electronics, Inc.
Krohn-Hite Corp.
KW Microwave Corporation
L-3 Communications
Lark Engineering Company
LCR Electronics, Inc.
Linear Technology Corp.
Magnetic Component Engineering, Inc.
Magnetico, Inc.
Marchand Electronics
Marshall Electronics, Inc.
Microlab/FXR
Microphase Corporation
Microwave Circuits, Inc.
Microwave Filter Co., Inc.
Mini-Circuits
Mitec Telecom Inc.
MMD Components/Monitor QuartztekProducts
MTK Electronics, Inc.
MtronPTI
Murata Electronics North America, Inc.
NEC Tokin America, Inc.
Netcom Inc.
Networks International Corp.
Nextek
North Hills Signal Processing
NTK Technologies Inc.
Oscilent Corporation
Oxley, Inc.
Pacific Aerospace & Electronics Inc
Pacific Instruments Inc.
PCA Electronics Inc.
Picosecond Pulse Labs, Inc.
Polara Engineering Inc.
Potter Production Corp.
Precision Filters, Inc.
Proxim Wireless Networks
Pulse, A Technitrol Company
R. C. Electronics Inc.
Raltron Electronics
RCD Components, Inc.
Reactel, Inc.
RFI Corp.
RLC Electronics, Inc.
RME Filters, Inc.
Rtron Corp.
Sage Laboratories, Inc.
Salisbury Engineering, Inc.
SatCon Technology Corporation
Sawtek Inc.
Schaffner EMC, Inc.
Schurter, Inc.
Semiconwell
Shure Incorporated
Signal Technology California Operations
Solar Electronics Company
Spectrum Control, Inc.
Stanford Research Systems, Inc.
Synergy Microwave Corp.
Synetcom Digital Inc.
TDK Corporation of America
Teledyne Instrument/Analycical
Television Equipment Associates
Texas Spectrum Electronics, Inc.
Thordarson Inc.
Thordarson Meissner Incorporated
Toko America, Inc.
Toyocom USA Inc.
Transtek Magnetics
Trilithic, Inc.
TT electronics BI Technologies
TTE, Incorporated
Tusonix, Inc.
Ultra-Crea Oy
Unadilla Antenna Manufacturing Company
Vertex RSI-Torrance
Wilco Corporation
WJ Communications, Inc.
Wurth Electronics Inc.
ZERO Surge Inc.
Analog & DSP, FIR Electronic Filters - Frequency Devices

 

Books
Design Tables for Discrete Time Normalized Low Pass Filters (Artech House microwave library)
Arild Lacroix and Karl-Heinz Witte

Characterization of low-pass filters for multivariable wavelets and some related questions
Eva Curry

Analog Circuit Design: Low-Noise, Low-Power, Low-Voltage; Mixed-Mode Design with CAD Tools; Voltage, Current and Time References
Johan H. Huijsing, Rudy J. van de Plassche, and Willy M.C. Sansen

Excerpt - page 31: "... to baseband and requires only a small packaged IF roofing filter and not a more expensive ... allows advances the two analog low pass filters in baseband may be no longer required in the ..."
See more references to Filters, Low Pass in this book.
Microwave Resonators and Filters for Wireless Communication: Theory, Design and Application (Springer Series in Advanced Microelectronics)
M. Makimoto, Mitsuo Makimoto, and Sadahiko Yamashita

Excerpt - page 3: "... of electrical equipment. Due to the variety and diversity of filter types, it often becomes necessary ... into four basic types: LPF (low-pass filter), HPF (high-pass filter), BPF (bandpass filter) and BEF (band-elimination ..."
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The design of filters using the catalogue of normalized low-pass filters
R Saal

Design of digital low-pass filters for time-domain recursive filtering of impact acceleration signals (USAARL report) (USAARL report)
Nabih Alem

First order autoregressive low-pass filters: A user's quick reference handbook (NOAA technical memorandum ERL RFC) (NOAA technical memorandum ERL RFC)
Francis J Merceret

Low pass filters with linear phase (Technical Report-) (Technical Report-)
R. M Lerner

Transient response of Butterworth approximations of ideal low-pass filters
Edgar Reich

Design and maximum error estimation for small error low pass filters (Research report - Cold Regions Research and Engineering Laboratory) (Research report - Cold Regions Research and Engineering Laboratory)
W. D Hibler

Design of High Frequency Integrated Analogue Filters (Iee Circuits, Devices and Systems Series, 14)
Yichuang Sun

Excerpt - page 31: "... NEDUNGADI, A. P. and GEIGER, R. I,.: 'High-frequency Voltage-controlled Continuous-time Low-pass Filter Using Linearised CMOS Integrators', Electronics Letters, Vol. 22, pp. 729-731, ..."
See more references to Filters, Low Pass in this book.
Active Filter Cookbook, Second Edition
DON LANCASTER

Excerpt - page 1: "... at the expense of others. Three very common types of filter are the low-pass filter, the bandpass filter, and the high-pass filter, although there ..."
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A study of very low frequency low-pass RC filters
Wayne A Ross

Introduction to Digital Signal Processing and Filter Design
B. A. Shenoi

Excerpt - page 23: "... H -1 and ADC Signal DAC Low Pass Analog Input Low Pass Filter Hold Processor Filter output x(t) y(t) Figure 1.17 Example of ..."
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The Circuits and Filters Handbook, Second Edition
Wai-Kai Chen

Excerpt - page 103: "... by extracting the baseband spectrum of S(eiw) with an ideal low-pass filter that recovers the original CT spectrum by removing all spectral ..."
See more references to Filters, Low Pass in this book.
On the performance of the Martin digital filter for high- and low-pass applications (NASA technical memorandum) (NASA technical memorandum)
Charles R McClain

The Legendre transfer function representation of a low-pass prototype filter, (New Mexico State University. Engineering Experiment Station. Technical report) (New Mexico State University. Engineering Experiment Station. Technical report)
Sheila Prasad

High speed image enhancement using a low-pass recursive filter (Technical report series / Dept. of Electrical and Computer Engineering, New Mexico State University) (Technical report series / Dept. of Electrical and Computer Engineering, New Mexico State
Jeffrey J Carlson

Synthesis of low-pass active filters with prescribed sensitivity;: XVI Convegno internazionale delle comunicazioni, Genova 8-12 ottobre 1968
Fabrizio Curtarelli

Microwave Filters, Impedance-Matching Networks, and Coupling Structures (Artech Microwave Library)
G. Matthaei, E.M.T. Jones, and L. Young

Excerpt - page 2: "... STOP BAND -~ f STOP BAND PASS BAND -->m 0 LOW-PASS FILTER f 0 HIGH-PASS FILTER f 1-7327-9! FIG. 1.02-1 FOUR COMMON ..."
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The Design and Implementation of Low-Power CMOS Radio Receivers
Derek, K. Shaeffer and Thomas, H. Lee

Excerpt - page 86: "... m'(t), and JHtpf (fIF)I is the gain of the effective low-pass filter at the IF frequency. It is interesting to compare the ..."
See more references to Filters, Low Pass in this book.
Low-Power CMOS Design
Anantha Chandrakasan and Robert W. Brodersen

Excerpt - page 29: "... diodes to replace high-value resistors. The resistor of the non-critical low-pass filter D3-C4 is implemented as a symmetrical quad of diodes, to ..."
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Current-Mode VLSI Analog Filters: Design and Applications
P.V. Ananda Mohan

Excerpt - page 20: "... I111 I C (c) Io, FIGURE 2.4. First-order CICO type filters: (a) low-pass filter, (b) general first- order filter, (c) simplification of (b) ..."
See more references to Filters, Low Pass in this book.
Digital Filter Design Solutions (Artech House Microwave Library)
Jolyon M. De Freitas and Jolyon M. De Freitas

Excerpt - page 2: "... the impulse response function, and represents the response of the filter to a pulse function of ... variable, depending on application. The pass band characteristics (d), are a ... phase filters; use of the low pass filters as a building block for high-pass, band-pass, band-stop ..."
See more references to Filters, Low Pass in this book.
Low-Noise Electronic System Design
C. D. Motchenbacher and J. A. Connelly

Excerpt - page 14: "... As an example of 0 f determination, consider a first-order low-pass filter whose signal transmission varies with frequency according to 1 A, ..."
See more references to Filters, Low Pass in this book.
Microstrip Filters for RF/Microwave Applications
Jia-Shen G. Hong and M. J. Lancaster

Excerpt - page 56: "... Y(,, Y and C~,;, may be chosen arbitrarily and the filter response will be identical to ... parameters are frequency invariable, the low- pass filter networks in Figure 3.18 can easily be transformed to ..."
See more references to Filters, Low Pass in this book.
Simplified Design of Filter Circuits (EDN Series for Design Engineers)
John D. Lenk and Lenk

Excerpt - page 8: "... amplitude and phase response. Figure 1-14 shows some examples of lowpass-filter response. A lowpass filter passes low-frequency signals ..."
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Analog and Digital Filter Design, Second Edition (EDN Series for Design Engineers)
Steve Winder

Excerpt - page 23: "... (d) Frequency Figure 1.5 (a-d) Frequency Domain Responses (a) Lowpass filters pass low frequencies. That is, they allow frequencies from DC up to ..."
See more references to Filters, Low Pass in this book.
Generalized Filter Design by Computer Optimization (Artech House Microwave Library)
Djuradj Budimir

Excerpt - page 37: "... L. P. B. Katehi, and G. M. Rebeiz, "W-Band Microshield Low-Pass Filters," IEEE MTT-S Int. Microwave Symp. Digest, 1994, pp. 625-628. [84] ..."
See more references to Filters, Low Pass in this book.
Analog Filters
Kendall L. Su, K. L. Su, and Su

Excerpt - page 60: "... filter. EXAMPLE 3.5. Obtain the fourth-order network function of a low- pass Chebyshev filter with ap = 0.75 dB. Determine K such that the ..."
See more references to Filters, Low Pass in this book.
Practical Analog And Digital Filter Design (Artech House Microwave Library)
Les Thede

Excerpt - page 1: "... changes the signal waveform. There are many types of electronic filters and many ways that they ... example, a lowpass filter would pass low frequencies with little attenuation (reduction in amplitude), while high frequencies ..."
See more references to Filters, Low Pass in this book.
Low Power CMOS VLSI: Circuit Design
Roy and Prasad

Excerpt - page 154: "... Figure 4.5 Detail of frequency response for the example low-pass filter in Tables 4.1 and 4.2 designed using a Hamming window. ..."
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Experimental Techniques in Low-Temperature Physics (Monographs on the Physics and Chemistry of Materials, 59)
Guy K. White and Philip Meeson

Excerpt - page 45: "... coil. Because it is the current flow which matters, very low resistances are required, input coil inductances of 1 wH are typical and resistances of order 100 p,S2 are needed. The arrangement forms a low-pass filter. These methods were first used by Giffard et al. (1972) ..."
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Low Temperature Plasma Physics: Fundamental Aspects and Applications
Rainer Hippler, Sigismund Pfau, Martin Schmidt, and Karl H. Schoenbach

Excerpt - page 160: "... probe a tithed probe [ 107]. Instead of the tuned filter the use of the low-pass broadband filter is also possible. Such filters may be constructed ..."
See more references to Filters, Low Pass in this book.
Analog Filter Design (The Oxford Series in Electrical and Computer Engineering)
M. E. Van Valkenburg

Excerpt - page 62: "... far and see that this response is that of a low- pass filter.  0 FIGURE 3.16 ITI FIGURE 3.17 0p w ..."
See more references to Filters, Low Pass in this book.
Digital Filters: Basics and Design
Dietrich Schlichtharle

Excerpt - page 6: "... delay has to be flat in the passband of the filter; this is equivalent to a ... consider a simple first- order low-pass filter which is characterised by the following transfer function: ..."
See more references to Filters, Low Pass in this book.
SOC Central
SOC Central
Electronic Filters, Amplifiers & Oscillators - Frequency Devices
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