HMC1086F10 for Pulse Power Amplifier question?

Dear Sir ,

Does HMC1086F10 can be used to Pulse power amplifier ?

If yes , what are the Raising  & Falling time ?

  • 0
    •  Analog Employees 
    on Feb 14, 2015 12:15 AM

    Hello ryan-tsai,

    I am trying to locate timing data...either measured or simulated.

    I am also investigating whether or not the part is compatible with pulsed applications and, if so, what is the recommended method of pulsing.

    Related to the pulsing, I'm also investigating the need for the capacitors shown on the application circuit.

    I shall follow up soon.

    Regards,

    SMcBride

  • 0
    •  Analog Employees 
    on Feb 16, 2015 10:00 PM

    Hello ryan-tsai,

    The HMC1086F10 is compatible with pulsed power applications.

    It is recommended that the pulsing of power be accomplished via the Vdd pins.

    Pulsing of power via the gates would provide acceptable results only if your application can tolerate a long delay before the output waveform has stabilized.

    The rise and fall times would be more strongly influenced by the pulse circuitry and the external capacitive bypassing than by the amplifier itself.

    That said, depending upon how you choose to modulate the power it is possible to obtain sub microsecond drain voltage rise times and nanosecond output power rise times.

    Regards,

    SMcBride

  • Hi Sir,

    Thank you for your reply .

    Base on your conclusion , how could I know the actually response? Could you capture the waveform which are about your measurement and simulation result.

    As I knew , customer would like to have a square wave on input port and worry  about the distortion on it.

    So they wanna know how the response for raising and falling time on HMC1086F10?

    BTW  , I could ask my customer also for what's kind of input signal they had?

  • 0
    •  Analog Employees 
    on Feb 17, 2015 11:59 PM

    Hello ryan ryan,

    From your comments it sounds as though your customer will be pulsing the RF input signal and not the Vdd or Vgg. Is my understanding of this correct?

    Is their interest the rise and fall times of the output signal only (a transition time), or the response times of signal from input to output (a propagation delay)?

    Yes, please ask your customer to describe the nature of their signals; RF signal frequencies and amplitudes, pulse signal timing parameters (e.g. period and pulse-width), etc.

    Regards,

    SMcBride

  • Hi Sir ,

    I got the response from my customer and please refer to below input condition

    1.Frequency: 9.0~9.5GHZ  ,amplitude: 0~10dBm

    2.PRF: 2KHZ(0.5mS )  ,Pulse Width: 1uS~10uS 

            @    PA: raise time: 1uS ,Fall time 1uS