Can LTC5553 support real-time bandwidth above 5GHz?

I use TI’s DAC38RF82, which is similar to AD9161. Both are RF DACs. The real-time bandwidth of RF82 reaches 2GHz. My LO uses lmx2595 with a frequency range of 1~20GHz. After mixing with LTC5553, I will keep the double-sideband signal.

I need a large bandwidth signal to carry out signal suppression interference experiments, which interfere with all signals with a frequency between 6~9GHZ.

Question 1: Can the LTC5553 mixer support a real-time bandwidth of 5GHz?

Question 2: LTC5553 includes a band-pass filter with a range of 3~20GHz. My IF intermediate frequency is lower than 3GHz. After mixing, is the power of the IF component in the RF still high?

Parents
  • +1
    •  Analog Employees 
    on Mar 18, 2021 10:43 PM

    The LTC5553 is a wideband double-balanced mixer designed for very wide signal bandwidth. It's IF port is internally matched from 500MHz to 9GHz with excellent return loss. The RF port is also internally matched with reasonable return loss across the entire bandwidth of 3-20GHz. A small shunt capacitor can improve matching at high frequencies.

    There is no internal bandpass filter on LTC5553. However, its on-chip RF balun has a bandpass frequency response. The LTC5553's IF to RF isolation is >40dB typical for IF from 500MHz to 9GHz.

Reply
  • +1
    •  Analog Employees 
    on Mar 18, 2021 10:43 PM

    The LTC5553 is a wideband double-balanced mixer designed for very wide signal bandwidth. It's IF port is internally matched from 500MHz to 9GHz with excellent return loss. The RF port is also internally matched with reasonable return loss across the entire bandwidth of 3-20GHz. A small shunt capacitor can improve matching at high frequencies.

    There is no internal bandpass filter on LTC5553. However, its on-chip RF balun has a bandpass frequency response. The LTC5553's IF to RF isolation is >40dB typical for IF from 500MHz to 9GHz.

Children
No Data