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Digital Step Attenuators

Digital step attenuators set RF signal level in calibrated discrete steps under digital control. They are used in programmable test paths, receiver protection, gain control loops, tactical radios and electronic-warfare signal chains.

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Digital step attenuator module for programmable RF level control
Electronic WarfareElectronic warfare RF paths combine wideband receiving, frequency conversion, switching, controlled attenuation and transmit power. Bandwidth, spectral purity, switching behavior, protection and thermal load define the hardware boundary.Tactical Communications RF HardwareRF and microwave hardware for tactical radio, mobile link and protected link paths, covering transmit power, conversion, switching, attenuation and transceiver front ends.
Electronic Warfare Transmit ChainWideband EW transmit-chain architecture for RF conversion, broadband amplification, switching, attenuation, monitoring and antenna-interface paths.

FAQ

Why must a passive RF impedance network have a defined reference plane and complex S-parameters?

The reference plane determines where impedance and waves are defined; complex S-parameters retain magnitude and phase needed to move planes, de-embed fixtures and predict network interaction.

What is an RF measurement reference plane, and when is fixture de-embedding required?

The measurement reference plane is the electrical boundary where a corrected value is claimed; de-embedding is needed only when a characterized fixture network must be removed to report at a different DUT plane.

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Digital step attenuators

Digital step attenuators introduce controlled RF loss in defined increments. They allow a system controller, test rack or embedded RF unit to change signal level without replacing fixed pads or moving manual controls.

Programmable attenuation data

Important data includes attenuation range, step resolution, attenuation accuracy, frequency flatness, insertion loss, return loss, switching time, settling behavior, power handling and control interface such as SPI, parallel logic or TTL. These values affect receiver protection, gain calibration, automated test sequences and adaptive RF chains.