Can we set GEO filters using Yii2-Sphinx Ext

I am using Yii2 Sphinx but there is no option for setting GEO filters such as latitude and longitude.

For a simple query , we can use ->select() but right now i am using join query and query is written in sphinx.conf file. Now i am stuck that how should i pass the lat and long to the query in conf file as we can change filters using ->andwhere().

Such as this :

$sphinx->SetGeoAnchor(‘lat’, ‘lon’, -0.591084, 2.639081);