• stepped attenuator in RF chain justification


    I am designing the RF part of the transmitter chain shown in the figure below. The signal level measured from the modulator's output ranges of -30 dBm. This design aims to amplify this signal and deliver variable power in the range of 37-40 dBm…

  • HMC451LP3/HMC451LC3/HMC441LC3B_2nd harmonic level

    Dear team,

    We are reviewing the devices for the test and measurement application.

    Coule we know the 2nd harmonic level about the following devices?

    1. HMC451LP3

    2. HMC451LC3

    3. HMC441LC3B

    We are looking forward to your advice.

    Thank you



  • RE: How does the RF Amplifier's current change with temperature?

    Hi Mr.yoo,

    The plot below shows typical Idd vs temperature vs input power level for HMC441LC3B.



  • ADI Amplifiers on X-MWblocks

    ADI PN X-MWblock PN Freq Range Gain (dB) @ Freq P1dB (dBm) @ Freq Supply (V) @ (mA)
    HMC451LC3B XM-A2A4-0404D 5 to 20 GHz 19.5 @ 10 GHz 18.7 @ 10 GHz 5 @ 129
  • RE: HMC441 and HMC451 suggested layouts solder mask

    Hi kris565,

    For the HMC441LC3B I see that solder-mask does not appear between Vdd and the adjacent NC pins (see the grey rectangles below, which overlap the device pads...at right, side-by-side with the Functional Diagram):


    Those NC pins (as defined…

  • Hittite RF - Machine & Charged Device Model Class

    Hi Tech support,

    Could you help to provide Machine and Charged Device Model Class on Hittite RF parts, see attached list.

    Thank you.



  • RE: RF Amplifer for Keysight Genesys

    The attached list details all of the ADI RF Amplifier Sys-Parameter models that are available in the 2015.08 release of Keysight Genesys.  This library will be updated over time.


    PartNumber RealPartNumber Description
  • 【在线研讨会回顾】雷达系统应用相关技术和解决方案




  • RE: 36GHz RF oscillation signal source

    You need a PLL which drives a frequency doubler which drives an amplifier. Possible choices might be ADF4371 (PLL),  HMC1105 (frequency doubler) and HMC7229 (amplifier). These are not the only choices.