公开(公告)号：GB2458676A

公开(公告)日：2009-09-30

申请号：GB0805566

申请日：2008-03-27

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  GROSSMAN OVADIA ,  ROZENTAL MARK ,  VALLACH URI

IPC: H03F1/32 ,  H03F1/34

Abstract: The onset of power amplifier compression during closed-loop level training of an RF transmitter is more readily detected by using a nonlinear input test waveform 203 which in conjunction with the dominant pole of the loop filter (113, figure 1) provides a substantially flat loop error signal 303 until compression occurs. The onset of compression produces a rise in the loop error signal 303 which is more distinct than the rise in the loop error signal 301 apparent when a linear ramp is used. Training may be performed during CLCH slots in a TETRA system.

公开(公告)号：GB2458676B

公开(公告)日：2010-02-24

申请号：GB0805566

申请日：2008-03-27

Applicant: MOTOROLA INC

Inventor： BEN-AYUN MOSHE ,  GROSSMAN OVADIA ,  ROZENTAL MARK ,  VALLACH URI

IPC: H03F1/32 ,  H03F1/34