Parabolic Curve Equalizers are designed to correct gain variations that peak or dip near the center of a frequency band, where simple linear equalization cannot provide an accurate correction. By introducing a smooth, symmetrical attenuation profile, they restore a flatter overall system response and improve broadband RF performance across complex signal chains.
Available in fixed and field-adjustable configurations, Spectrum Control's Inmet brand Parabolic Curve Equalizers support broadband applications through 40 GHz, with tunable solutions extending to 50 GHz. Their rugged coaxial construction and precise response shaping make them ideal for military, aerospace, electronic warfare, SATCOM, and advanced communications systems.
How it Works
Parabolic Curve Equalizers create a smooth, symmetrical attenuation profile that is greatest near the center of the band and gradually decreases toward the edges. This helps correct mid-band gain variation that a simple linear equalizer cannot address.
Why it Matters
Many RF systems do not have a straight gain slope—they peak or dip in the middle of the band. Parabolic correction helps flatten the response, improve signal fidelity, and support more consistent system performance.
Understanding the Response
The response shows a curved attenuation profile designed to offset mid-band gain irregularities. Fixed models provide repeatable correction, while tunable versions allow additional adjustment to match the system more closely.
Parabolic Curve Equalizers
Restore a Parabolic Response for Improved System Performance
System Response
Original System Response
System exhibits parabolic gain variation with lower gain in the center of the band.
Parabolic Equalizer
Parabolic System Response
Equalizer provides parabolic attenuation to offset system variation.
Equalized System Response
Original System Response
System exhibits parabolic gain variation with lower gain in the center of the band.
Typical Applications
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Broadband RF amplifiers
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RF and microwave communication systems
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Test and measurement equipment
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Radar and electronic warfare (EW) systems
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SATCOM and aerospace platforms
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Signal conditioning networks
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RF system integration
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Broadband microwave assemblies
Why Choose Spectrum Control?
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Compensates for frequency-dependent gain variation
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Restores a flatter system frequency response
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Broadband coverage from 2 to 18 GHz
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Positive slope equalization for gain flattening
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Passive operation with no external power
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Low insertion loss and excellent VSWR
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Compact coaxial package for easy integration
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Custom equalization solutions available