Abstract
The amplitude-frequency characteristic of transmission function of APD-GaAsFET analog optic receiver is usually nonideal in stopband. For this reason, the output Signal-Noise Ratio (SNR) is often lowered. A method is proposed to analyze and calculate the lowered output SNR caused by the nonideal stopband characteristic. A quantitative relation is established by using a low-band filter, which helps to improve the output SNR. The output noise formula is universally applicable to APD-GaAsFET analog optic receiver.
| Original language | English |
|---|---|
| Pages (from-to) | 144-148 |
| Number of pages | 5 |
| Journal | Beijing Hangkong Hangtian Daxue Xuebao/Journal of Beijing University of Aeronautics and Astronautics |
| Volume | 28 |
| Issue number | 2 |
| State | Published - Apr 2002 |
Keywords
- Analog transmission systems
- Signal-noise ratio
- Transmission characteristics
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