Adding a Power Amplifier to an RF IC Circuit

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SUMMARY

The discussion focuses on integrating a power amplifier (PA) with the ADF7020 RF IC from Analog Devices. Richard D. Reavis expresses concerns about impedance matching, specifically the requirement for a 50-ohm input for the PA and the potential changes in combined impedance at the Tx/Rx node. Participants emphasize the necessity of utilizing robust simulation tools and test equipment for effective RF IC and PCBA design, highlighting the importance of SPICE packages and electromagnetic (EM) simulation software.

PREREQUISITES
  • Understanding of RF IC design principles
  • Familiarity with impedance matching techniques
  • Experience with SPICE simulation tools
  • Knowledge of electromagnetic (EM) simulation software for PCB design
NEXT STEPS
  • Research impedance matching techniques for RF circuits
  • Learn about SPICE simulation tools specific to RF design
  • Explore electromagnetic (EM) simulation software options for PCBA
  • Investigate the specifications and application notes for the ADF7020 RF IC
USEFUL FOR

RF engineers, circuit designers, and anyone involved in the development and optimization of RF IC circuits, particularly those working with power amplifiers and impedance matching.

RDReavis
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Hello all,

I'm trying to design a circuit that utilizes the http://www.analog.com/en/rfif-components/short-range-transceivers/adf7020/products/product.html" . What I'm worried about is getting everything to match properly; the PA requires a 50 ohm input, and after dropping it into the circuit, the combined impedance seen at the Tx/Rx node will change, throwing off both Tx and Rx.

Any suggestions as to where I might begin?

Thanks,
Richard D. Reavis
 
Last edited by a moderator:
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You really need to have good simulation tools and test equipment to work with RF IC/PCBA design. What tools do you have available? What SPICE package and libraries do you have at your disposal? Do you have any PCBA EM simulation software?
 

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