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AT3 series
1 GHz Attenuator


* Support 1218 MHz

* Excellent Return Loss

* Very Flat Attenuation Curve

* One-piece Brass Housing

* Robust Mechanical Structure

* High RFI Shielding

* Precision Connector Thread

* Exquisite Plating Quality

* Good Weather Resistance

* Waterproof

* Suitable for TV, CATV, MoCA, DOCSIS systems
75 Ohm 2.5 GHz Attenuators

The AT3 series is a compact size broadband attenuator.

Its superior specifications enable it to meet the needs of all attenuation or impedance matching applications in the TV, DVB-T, ATSC, CATV, DOCSIS,...etc frequency range.

The specifications: from 1 MHz to 1218 MHz at 100 mW average, 200 mW peak, excellent return loss(>20 dB at 1000 MHz) and good accuracy.

A list of commonly used 1 GHz models is as follows. If there are other attenuation value requests, please contact us, we can also design.

The 1218 MHz models is also available, please specify when ordering.

Model Attenuation Model Attenuation
AT3 - 103W   3dB AT3 - 105W 5dB
AT3 - 106W   6dB AT3 - 110W 10dB
AT3 - 109W   9dB AT3 - 115W 15dB
AT3 - 112W 12dB    
  Electrical Curve ( AT3-105W / AT3-110W )

Insertion Loss  |  Return Loss
SPAN 1000MHz
Fig 1

Insertion Loss  |  Return Loss
SPAN 1000MHz
Fig 2
  General Specifications
  Item AT3 - 110W AT3 - 110
  Power Passing Disallow Disallow
  Waterproof Yes No
  Impedance 75 Ohm
  Frequency Range 5 - 1000MHz
  Insertion Loss 10dB (typ)
  Flatness +/-0.4dB (max)
  Return Loss 20dB (min)
  Power 100mW (average)
  Dimensions 12.5(¢) x 30 mm
  Net Weight 12g
 * Specifications may be change depending on the model or customer's requirement.


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