Hi, the datasheet of SR4L034, page 15 and 26 doesn't show the short between pin 2 and 3 (SC1,SC2). Please confirm that the short should be there also when no active tuning is used. We have the short on our prototype board and get high reflection between 800-900 MHz compared to the SR4L034-EVB-1.
Antenna Applications Director at Antenova Chris develops some of the smallest antennas and modules in the world. He leads Antenova's R&D team.