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IWR1443BOOST: Elevation resolution

Lucas168
Prodigy 150 points
Part Number: IWR1443BOOST
Other Parts Discussed in Thread: AWR1443

Dear Champs,

According to below post, the azimuth resolution of IWR1443BOOST is 2/4R/2T = 1/4 radians = 14 degrees.

But how about the elevation resolution? I only can get elevation FOV (-15 ~ 15 degree) per below post.

  • 0
    TI__Mastermind 37500 points

    Hello,

    The swra554 ( www.ti.com/.../swra554.pdf) discusses the angle resolution of the number of lambda/2 receivers. 

    In the xWR1443 device we have

       4 Receivers,

       2 Transmitters in Azimuth, 1 Transmitter for Elevation. 

    Using the MIMO technique for azimuth discussed in the application note, we can effectively have 8 receivers.   

    So for a single Tx to 4Rx, where the Rx antenna spacing is lambda/2, we have radian/4 = 45 deg

    In the azimuth of 2 Tx, to Rx, where the Rx antenna spacing is lambda/2. we have radian/8 = 22.5 deg

    Regards,

    Joe Quintal

  • 0 in reply to Radio-Joe
    Prodigy 150 points

    Joe,

    1. Is "In the azimuth of 2 Tx, to Rx" a typo in your reply? I think it should be "In the azimuth of 2 Tx, to 4Rx".

    2. xWR1443BOOTS's azimuth resolution calculated in below post is 14 deg but yours is 22.5 deg. What's the difference?

    Sandeep Rao30 said:

    In the AWR1443 EVM, there are 2 TX's and 4 RX's for azimuth resolution (=>8 virtual antennas) , giving you a native resolution of 2/8 radians = 14 degrees.

    Thanks.

  • 0 in reply to Lucas168
    TI__Mastermind 37500 points
    Hello,
    The difference is the observation angle of the antenna. If its 180deg/8 = 22.5, if its 112/8 degrees = 14degrees.

    Regards,
    Joe Quintal