Ka-Band Core Chip

The CGY2351UH/C1 is a high performance GaAs MMIC core chip operating in Ka-band. It follows the T/R architecture, is passive, and exhibits only 2 RF ports. It includes a 6-bit phase shifter and a 5-bits attenuator; it has a phase shift range of 360° with a 5.62° step and attenuation range of 22 dB with 0.7 dB step. It operate from 26.5 to 30.5 GHz. The on-chip control logic with serial input register minimizes the number of bonding pads and greatly simplifies the interfacing to this device. This die is manufactured using 0.18 μm gate length ED02AH pHEMT Technology. The MMIC uses gold bond pads and backside metallization. It is fully protected by a Silicon Nitride passivation layer to obtain the highest level of reliability. This technology has been evaluated for Space applications by the European Space Agency (ESA) and is on the European Preferred Parts List of ESA.

Product Specifications

Part Number
Ka-Band Core Chip
Min Frequency(GHz)
Max Frequency(GHz)


  • Phase Shifter 6 bits: 360° max with 5.625° step
  • Attenuation 5 bits: 22 dB max. 0.7 dB step
  • RMS Phase Error: 4° all states
  • RMS Amplitude Error: 0.5 dB all states
  • Input Return Loss Matching: 14 dB
  • Output Return Loss Matching: 13 dB
  • Supply Voltage: +5 V & -5 V
  • Total Current Consumption: 17 mA
  • Chip Size: 4800 x 1600 μm
  • Tested, Inspected Known Good Die (KGD)
  • RoHS* Compliant

Technical Resources


Order from MACOM

Ka-Band Core Chip