How to match LTC5562 LO ranging from 3GHz to 7.5GHz

How do I match LO port of LTC5562, my LO ranges from 3GHz to 7.5GHz?

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  • Hi ,

    Table 2 shows the part impedance in parallel form, not series. This will make the math work out.

    Also, keep in mind that the simulator will use ideal components, so to make the results match the table, you're likely going to need to include some real component s-parameters as well as account for the losses and imperfections in the board you'll be using. Figure 8 shows measured data using the circuits from Table 4, so it should line up once all the parasitics are added in to the simulator.

    Best Regards,


    Weston Sapia

    Sr. RF Applications Engineer

    Analog Devices

Reply
  • Hi ,

    Table 2 shows the part impedance in parallel form, not series. This will make the math work out.

    Also, keep in mind that the simulator will use ideal components, so to make the results match the table, you're likely going to need to include some real component s-parameters as well as account for the losses and imperfections in the board you'll be using. Figure 8 shows measured data using the circuits from Table 4, so it should line up once all the parasitics are added in to the simulator.

    Best Regards,


    Weston Sapia

    Sr. RF Applications Engineer

    Analog Devices

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