Equalizers are generally associated with devices designed to reduce or remove group
delay and/or amplitude and/or phase variations across a filter band. However, some equalizers
are meant to flatten gain across the operational band of an amplifier, filter, or complete
Higher order filters, with corresponding greater out-of-band attenuation, exhibit
higher levels of group delay variations at the band edges. Group delay variation distorts
signals by varying the time that the spectral components to move from the input to the
output of the filter. Square waves, for instance, contain their highest frequency components
at the band edges, so on a filter with a lot of group delay, the square wave will exit
with rounded and otherwise distorted edges. Such distortion can (and will) negatively
affect the bit error rate (BER) of digital communications.
Aeroflex-Inmet (now API Technologies) | 888-244-6638 |
Ann Arbor, MI
Adapters, amplifiers, attenuators, bias tees, DC blocks, gain equalizers,
power dividers, terminations.
Akon | 408-432-8039
| San Jose, CA
Microwave amplifiers 0.5 to 20.0 GHz, power dividers and gain (slope)
equalizers 1.0 to 18.0 GHz, converter assemblies 2.0-20.0 GHz, filter banks and switch
filter banks 2.0-18.0 GHz, discriminators.
Corp | 203-838-8296 | Norwalk, CT
RF/Microwave Components, 100 MHz-40
GHz including amplifiers, equalizers, DLVA's, SDLVA's, Log IF, integrated subassemblies,
switched filters, switched multipliers, upconverters, and downconverters.
Custom Microwave Components
| 510-651-3434 | Fremont, CA
RF & microwave PIN diode & GaAs FET switches,
switch matrices, switch/filter matrices, analog & digital attenuators and phase shifters,
limiters, power dividers/combiners, couplers, fixed & variable equalizers.
| 408-526-1100 | San Jose, CA
Designs and manufactures a wide selection of microwave
products including microwave mixers, frequency doublers, detectors, equalizers, pin diode
limiters, broadband couplers, broadband power dividers.
Inmet (now API Technologies) | 888-244-6638 | Ann Arbor,
Fixed, 2.4mm, 2.92mm, 3.5mm, 7mm, 7/16, SMA, N, F, BNC, TNC, GPO connectors, from
dc to 2, 4, 6, 12.4, 18, 26.5, 40 & 50 GHz, values 0 to 60 dB, power to 300 W.
| 732-636-1900 | Avenel, NJ
All standard filter types - lowpass, highpass, bandpass,
bandstop, equalizers, diplexers, duplexers, notch - and individually synthesized filters
for special applications. State of the art computer synthesis, analysis and test methods
are used to meet the most challenging specifications for military, commercial, medical,
communication, radar, positive train control (PTC), and
Mica Microwave (now
Mercury Systems) | 209-825-3977 | Manteca, CA
Circulators, isolators, mixers, equalizers,
| 434-455-2800 | Lynchburg, VA
High performance RF/Microwave filters, diplexers and
duplexers from DC - 20 GHz, tunable filters and cavities, ceramic filters, surface mount
filters, notch filters.
Midwest Microwave (now
Emerson Network Power) |734-429-4773 | Saline, MI
DC blocks, couplers, power dividers, equalizers, phase shifters, adapters, cable assemblies,
connectors - SMA, BMA, N Type, 7 mm, 3.5mm, QPL/DSCC approved products, tools, gauges,
| 408-232-9200 | San Jose, CA
Provider of photonic integrated circuit-based modules,
components and subsystems for use in optical communications networks including the Dynamic
Channel Equalizer product line which is used to configure ROADMs and Optical Nodes to
equalize or block individual optical channels and enables dynamic provisioning in the
R.A. Wood Associates
| www.315-735-4217 | Utica, NY
Engineering consulting services, computer automated
test design & development, engineering prototypes & low rate manufacturing, RF/Microwave
system design & analysis, subcontract specifications, wireless system design, custom
software program development, LabVIEW software development, lectures & training classes,
computer consulting services. Software: SpurFinder®, TunerHelper®, RFSpecTest®, PathLossSolver®,
Painless Extraction®. Equalizers on Demand - amplitude flatteners.