Sep 1, 2004 #1 D dd2001 Full Member level 4 Joined Apr 14, 2002 Messages 236 Helped 1 Reputation 2 Reaction score 1 Trophy points 1,298 Activity points 1,912 in GSM, out of channel, blocking test was failed, how and where to start improve it? Any one give a direction? LNA, Filter?
in GSM, out of channel, blocking test was failed, how and where to start improve it? Any one give a direction? LNA, Filter?
Sep 4, 2004 #2 V vfone Advanced Member level 6 Joined Oct 10, 2001 Messages 5,762 Helped 1,626 Reputation 3,257 Reaction score 1,262 Trophy points 1,393 Activity points 36,592 First places that you have to check is the IP3 of the LNA, the rejection of the RX SAW filter (out-of-band blocking), and the phase noise of the LO. regards
First places that you have to check is the IP3 of the LNA, the rejection of the RX SAW filter (out-of-band blocking), and the phase noise of the LO. regards