ruwan2
Member level 5
- Joined
- Nov 29, 2011
- Messages
- 90
- Helped
- 0
- Reputation
- 0
- Reaction score
- 0
- Trophy points
- 1,286
- Activity points
- 2,141
Hi,
I read the following link on IP3 calculation:
**broken link removed**
There are three stages (stage 1 and stage 3 are amp while stage 2 is bandpass filter) which has the OIP3 and gain respectively:
OIP3 +21dBm(125.9) inf dBm(inf) +25 dBm(316.2)
Gain 15 dB (31.62) -3 dB (.5) 15 dB (31.62)
After calculate cascading OIP3, it gives:
OIP3 = 273.075 = 24.4 dBm , IIP3 = 24.4 - 33 = -8.6 dBm
Where does the 33 come from?
Could you help me on that?
Thanks,
I read the following link on IP3 calculation:
**broken link removed**
There are three stages (stage 1 and stage 3 are amp while stage 2 is bandpass filter) which has the OIP3 and gain respectively:
OIP3 +21dBm(125.9) inf dBm(inf) +25 dBm(316.2)
Gain 15 dB (31.62) -3 dB (.5) 15 dB (31.62)
After calculate cascading OIP3, it gives:
OIP3 = 273.075 = 24.4 dBm , IIP3 = 24.4 - 33 = -8.6 dBm
Where does the 33 come from?
Could you help me on that?
Thanks,