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IWR1642BOOST: Redesign the array of patch antenna

Prudhvi Sagar
Genius 3785 points
Part Number: IWR1642BOOST

Hello,

My application is liquid level sensing for a range upto 30m. I am trying to design horn/dielectric lens for the patch antenna to have a narrower beamangle. What are the tradeoffs of having an array of patch antenna over a single patch?  Designing a horn/lens would be easier for a single patch, would there be any advantages just by redesigning to single patch?

Regards,

Prudhvi Sagar

  • 0
    TI__Guru 50240 points

    Hi Prudhvi,

    I've asked an expert to look into this and we should have an answer for you later this week.

     

    Cheers,

    Akash

  • 0 in reply to Akash Gondalia
    TI__Mastermind 25825 points

    Hello Prudhvi,

         Single Series fed patch array narrows the elevation beam, However by multiple columns of series fed patch array narrows the Azimuth beam pattern as well, so as to get pencil beam. Higher the number of elements (to get narrower beam) larger would be antenna size.  Larger Antenna size with the patch array elements incur higher loss on the board.  Another aspect is that needed to be considered is the beam tilt effects for the pencil beam kind of Radiation pattern, across the frequency band of interest. 

    For the level sensing application, Lens/Horn has been  widely used in the industry. With Lens/Horn it would be easier to design narrow beam, It would be difficult to design MIMO array with the Lens/Horns due to physical size constraints. Due to  this it would be challenge to get angle estimation from MIMO array. 

    Thanks and regards,

    CHETHAN KUMAR Y.B.

  • 0 in reply to CHETHAN KUMAR Y.B.
    Genius 3785 points

    Hello Chetan,

    Thank you for the support. So an array of patch antenna is better in terms of narrower beam but has more losses and tougher horn/lens design compared to a single patch. I will then stick to the existing patch as EVM and design horn around it. I have started doing an HFSS simulation, Can you roughly confirm if what I am doing getting output is correct. Soon will extend for an array of patch antenna.

    Regards,

    Prudhvi Sagar

  • 0 in reply to Prudhvi Sagar
    TI__Mastermind 25825 points

    Hello Prudhvi,

             You need to provide more information to comment: 

    1) Simulation result is shown for single path or for EVM array or with Lens? 

    2) You need to provide Azimuth and Elevation cuts with gain number along with angle information. Without the numbers it's difficult to comprehend. 

    3) Specification for the Lens/Horn.

    You could compare results yourself :one simulation without Lens/Horn and another with Lens/Horn. Depending upon the Specification of Lens/Horn you should expect higher gain/narrower FOV in the intended direction depending upon the Lens/Horn specs. 

    Thanks and regards,

    CHETHAN KUMAR Y.B. 

  • 0 in reply to CHETHAN KUMAR Y.B.
    Genius 3785 points

    Hello Chethan,

    Thank you for the support. Yes the simulation is for single patch. I am still working on simulation with a horn. I will get back as soon as I finish it.

    Regards,

    Prudhvi Sagar

  • 0 in reply to Prudhvi Sagar
    TI__Mastermind 25825 points

    Hello Prudhvi,

        Currently, I will close this thread, Please raise a new thread once you have above information available.  And you could refer this thread when you are raising new thread.  

    Thanks and regards,

    CHETHAN KUMAR Y.B.