20m frequency bandwidth occupied by the data flow : 20 188 204 2 1 . 35 16 . 7m 20m數(shù)據(jù)流所占用的頻率帶寬為:
The minimum detectable electric field strength is 10 ~ 20 mv / m at frequency bandwidth of 3 hz . the dynamic range is 80 db at 250 mhz 在200mhz的頻率下的全向性達到3db , 2ghz頻率下全向性為1 . 5db 。
Switching power amplifier is popularly used because of its virtues of low power losses , high efficiency and high frequency bandwidth 開關型功率放大器因其損耗小、效率高、通頻帶寬等優(yōu)點,廣泛取代了早期低效率的線性功放,成為目前功率放大器研究的重點。
Comparing with the system which does not space - time code , space - time coding can obtain transmit diversity and increase channel capacity without frequency bandwidth loss 與空間未編碼系統(tǒng)相比,空時編碼可以在不犧牲帶寬的情況下起到發(fā)射分集和提高功率增益的作用。
Artificial neural network ( ann ) method is proposed to use in active control system after the analysis of the effective frequency bandwidth of tmd control system 在分析了被動tmd用于風振控制存在有效頻帶窄的問題后,提出了采用神經(jīng)網(wǎng)絡提供主動控制力的主動控制方法。