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CC1310: Sub GHz RF Circuit and Printed Antenna Design Workflow.

Tim Berlake
Prodigy 180 points
Part Number: CC1310

Kind Attention: Texas Instruments' (TI) PCB/RF Reference Designs Development Department.

Aim: To know the general workflow recommened by TI ( e.g., hardware, software tools etc.) in order to custom design a PCB antenna for a particular sub ghz radio frequency (let's say, 866 Mhz) using CC13x0 device.

Queries: (please skip answering any query, if it is classified)

1. What software one could use to calculate the values for various discrete components (resistors,capacitors,inductors etc.) required for designing balun, filters, pi network, decoupling capacitors etc., which are used in between the RF port of the CC13x0 device and PCB Antenna for a particular frequency ?

2. What software and hardware is used in designing, modelling and testing a PCB antenna (let's say for any TI sub ghz CC1310 reference design) ?

3. Since, most of the reference design files are in Cadence Project form. I am assuming, TI is using Cadence Orcad for schematic and Allegro for PCB Editing. Am I right ?

4. Are there any Cadence Tools for PCB Antenna Designing, Simulation and Verification ?

5. What software would TI recommend for PCB Antenna Designing for sub ghz CC1310 device ? ( ADS, Microwave Office or any thing else)

Thanks in advance.

With regards,

Tim.

  • 0
    TI__Guru**** 317180 points
    Some of these questions I leave for a colleague that do most of our antenna designs. He is back from vacation later this week.

    1) If you are planning to use one of the frequencies we have a reference design for I would recommend follow the reference design.

    For the passive network connected to the RF pins the engineer designing the PA and LNA often suggest a start value. Then we run load pull and source pull measurements to verify which load the chip want to see for optimal performance. Then typically ADS is used to find the network that gives both the optimal load and the required filtering to pass regulations.

    3) Yes, we are at the moment using Cadence Orcad schematic and Allegro for PCB.
  • 0 in reply to TER
    Prodigy 180 points

    Thanks for your answer, TER.

  • 0
    TI__Mastermind 33080 points

    Hi Tim,

    For simulations we use ADS and Momentum.

    For the antenna simulations, it is extremely important to include the close surroundings (casing, batteries, display, metal etc) and this is quite tricky. 

    For antenna tuning, I prefer more to measure the antenna on a VNA than simulating. I have used several different simulation programs but they are only as good as the models/parameters you enter into the simulation test bench. With a VNA, the error factor of simulating is avoided.

    Regards,

       Richard

  • 0 in reply to RGW
    Prodigy 180 points

    Thanks, Richard, for your reply.