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Susumu

New Chip Attenuators Provide Attenuation of up to 10dB from DC to 30GHz

Susumu’s new ATS series of chip attenuators is rated for operation up to 30GHz, making it ideal for use in high-frequency communications systems, such as 5G networks.

The development of the ATS series drew on Susumu’s expertise in the design and production of innovative precision thin-film chip resistors – an attenuator is a resistor network with impedance matching. Thin film is a suitable material for high-frequency attenuators as it has no skin effect.

Susumu implemented a number of design innovations to enable the ATS series to operate at very high frequency:

  • The resistive elements on top of the ceramic substrate are connected to the terminal on the bottom with through-hole vias. This shortens the distance that signals travel, thus minimizing inductance.
  • A thinner substrate achieves the same effect
  • The trimming line is shaped specially to avoid reflections
  • The ground terminals surround the signal terminal to reduce interference and crosstalk

The ATS series attenuators are offered in the 0805-size chip package. ATS series attenuators are available with attenuation values from 0dB to 10dB, in 1dB increments.

 

Susumu — ATS Series Chart
Features
  • Operating-frequency range: DC to 30GHz
  • Attenuation tolerances:
    • ±0.5dB from DC to 20GHz
    • ±0.75dB from 20GHz to 30GHz
  • Voltage standing wave ratio:
    • ≤1.5 from DC to 20GHz
    • ≤1.7 from 20GHz to 30GHz
  • 50Ω impedance
  • 100mW rated power
  • Operating-temperature range: -55oC to 125oC
Applications
  • Wireless communications systems and modules
  • Base transmitter stations
  • Avionics
  • Wireless power transmitters
  • Drones
  • IoT devices
Susumu — ATS Series