| 1. | Ultra - high - frequency oscillator
特高频振荡器 |
| 2. | Ultra - low frequency oscillator
特低频振荡器 |
| 3. | Bfo beat - frequency oscillator
拍频振荡器 |
| 4. | Bfo beat frequency oscillator
差频振荡器 |
| 5. | Multiple frequency oscillator
多频振荡器 |
| 6. | Fixed frequency oscillator
定频振荡器 |
| 7. | Beat frequency oscillator
差频振荡器 |
| 8. | You must appreciate this simple fact to understand high frequency oscillators
你必须要明白这个简单是事实才能理解高频振荡器。 |
| 9. | For example , carrier frequency offsets , which are caused by the inherent instabilities of the transmitter and receiver carrier frequency oscillators , can lead to severe system degradation due to inter - carrier interference ( ici ) . symbol timing synchronization must also be achieved in order to avoid inter - symbol interference ( isi )
其载波频率误差会引入子信道之间的干扰( ici ) ，而帧同步的误差会引入符号间干扰( isi ) ，同时还会对信道估计带来严重的影响。 |
| 10. | The traditional analog frequency - sweeping instrument , which mostly uses the lc circuit as the frequency oscillator , is more expensive , too much bigger and heavy to carry . it can only display the curve of amplitude - frequency , but ca n ' t used to measure the phase - frequency , and ca n ' t used to print the curve of frequency response characteristic either . it brings many discommodity to the user
传统的模拟式扫频仪大多是用lc电路构成扫频振荡器,它不仅价格昂贵,体积庞大,而且只能显示幅频特性曲线,不能得到相频特性曲线,更不能打印被测网络的频响曲线,给使用者带来诸多不便。 |
