射频微波技术知识测试1
RF Quiz #1
1. What is the impedance of free space?
| |
|2. What happens to the noise figure of a receiver when a 10 dB |
|attenuator is added at the input? |
|a) Noise figure increases by 10 dB |
|b) Noise figure decreases by 10 dB |
|c) Noise figure doesn't change |
|3. An RF system has a linear throughput gain of +10 dB and an output|
|3rd-order intercept point (OIP3) of +30 dBm. What is the input |
|3rd-order intercept point (IIP3)? |
|a) +20 dBm |
|b) +40 dBm |……
