• State Resolved
  • Locked Locked
  • Replies 3 replies
  • Subscribers 17 subscribers
  • Views 802 views
  • Users 0 members are here
Support feedback
Options
Options
Similar topics

This thread has been locked.

If you have a related question, please click the "Ask a related question" button in the top right corner. The newly created question will be automatically linked to this question.

CC2430 Inverted F antenna

Nancy Stone34
Prodigy 20 points
Other Parts Discussed in Thread: CC2430, CC-ANTENNA-DK2

I imported the CC2430 reference design and antenna and using Genesys tool momentum to simulate the input return loss and using the parameter from the PCB, the S11 is looks pretty bad.  Hopefully the expert could give me some tips to improve the design.

  • 0
    TI__Guru**** 317180 points
    The inverted F antenna is described here:
    www.ti.com/.../swru120c.pdf and www.ti.com/.../swra496a.pdf

    We have used this antenna on a fair number of designs and have never seen any issues. Are you sure that your simulation setup is correct?
  • 0 in reply to TER
    Prodigy 20 points
    Initially, I imported the zip file in DXF format and the dimension is all incorrect. With the help of Genesys tools application engineer, we took the reference design remove all the circuit and kept the layout of the Inverted F antenna. When simulated the inverted F by itself in momentum, the S11 is ~-2dB. Is there a file for inverted F layout only?
  • 0 in reply to Nancy Stone34
    TI__Mastermind 29510 points

    The antenna design requires a certain GND size. If the GND plane configuration is incorrect in your simulation then the results will also be incorrect.

    Simulate the complete board CC-Antenna-DK2 # 11 which has this particular antenna. The antenna has a large BW and if the S11 is -2 dB then the simulation setup is incorrect. This antenna is used in a large number of designs and is quite robust due to the large BW. 

    Regards,

       Richard