IWR6843: regard antenna design

HI, Ming:

For iwr6843, two type antenna modules are available.   They are ISK module and ODS module.   The ISK module has narrower FOV on elevation direction and stronger gain on the azimuth direction, it also has better angle resolution in azimuth direction.  On the other hand, ODS has wide FOV on both elevation and azimuth direction.   And it has lower gain.  

In the system level, it is more of a tradeoff between FOV, gain, and angle resolution.   Users can design the antenna based on their needs.

The following document has some details on different antenna modules. 

http://www.ti.com/lit/ug/swru546b/swru546b.pdf?ts=1587744972526

Best,

Zigang