tony_lth
Advanced Member level 5
Hi, All,
I designed a GSM module with NXP PA.
But if decoupling capacitors, C733 and C707, are mounted.
The RX is desensed more than 7dB.
Without these two capacitors, the rx sens is -106dBm.
But with these, the rx sens iw worse than -100dBm.
If changing C733/C707 to 100nF and 100pF, the rx sens is also desensed.
Why?
Thanks.
Best,
Tony Liu
I designed a GSM module with NXP PA.
But if decoupling capacitors, C733 and C707, are mounted.
The RX is desensed more than 7dB.
Without these two capacitors, the rx sens is -106dBm.
But with these, the rx sens iw worse than -100dBm.
If changing C733/C707 to 100nF and 100pF, the rx sens is also desensed.
Why?
Thanks.
Best,
Tony Liu