radio frequency n.无线电频率 radio transmission 无线电发射 radio n. 1.收音机,无线电设备 2.无线电广播台 3.无线电,无线电传送,无线电广播 4.无线电收发报机 v.[I,T] 1.用无线电发送讯息 transmission n.[C] 1.传送,输送;传递,传达 2.传染,传播 3.【机】传动装置;变速器 4.(无线电、电视...
A transmission line (1) for transmitting radiofrequency range current between a first conductive element (2) and a second conductive element (3), the transmission line (1) comprising a signal current line (4) and at least one return current line (5), the signal current line (4) and the...
Definitions of radio frequency transmission lines; mean characteristic impedance, mean standing wave ratio 高频传输线技术的概念;平均特性阻抗.平均脉动系数 www.mapeng.net 2. The Design and Realization for Radio Frequency Transmission of Remote VideoMonitoring System 远程视频监控系统射频传输方式的设计及实现...
To determine the frequency range of radio waves that can be reflected from the ionosphere for long-range radio transmission, we can follow these steps:1. Understanding Skywaves: - Long-range radio transmission utilizes wave
Frequency Range: 2.4G 2.4G System: CC2500/SX1280 Channel: 8 Support Protocol: Futaba S-FHSS/Frsky FCC D16/Frsky LBT D16/Frsky D8, ExpressLRS 2.4G Power: ELRS version 25mW/50mW/100mW, Frsky version 100mW Adapted Drone Type: Multirotor, Airpl...
1. Frequency Range: 87.0MHz~108.0MHzSetting step 10KHz2. Output Power 0~5W/10W/30W/50W/100W/200W/300W3. Output power deviation <± 10%4. Output power stability <± 3%5. Output Load Impedance 50Ω6. RF Output Interface N-50K7. Residual wave radiation <-70dB8. Parasitic amplitude ...
输出信号的频率不可避免会有一定的偏差,我们用频率误差(Frequency Tolerance)或频率稳定度(Frequency Stability),用单位ppm来表示,即百万分之一(parts per million)(1/10^6),是相对标称频率的变化量,此值越小表示精度越高。比如,12MHz晶振偏差为±20ppm,表示它的频率偏差为12×20Hz=±240Hz,即频率范围是(1199976...
1. Frequency Range: 87.0MHz~108.0MHzSetting step 10KHz2. Output Power 0~500W/1000W3. Output Impedance 50Ω4. RF Output Interface 7/16"(female)/ 7/8" Flange5. Residual wave radiation ≤-70dB6. Parasitic amplitude modulation ≤-50dB7. Pilot frequency deviation < 0.5Hz8. P...
A radio transmission method and a wireless transmission system comprising multiple transmitter and receiver antennae simultaneously operating within the same frequency range and space-time encoders and decoders. Data transmission and cha... V Jungnickel,U Krueger,V Pohl,... - US 被引量: 18发表:...
Since the amount of phase shift is frequency dependent, the combined received signal is also frequency dependent, which can lead to serious problems in wideband transmission. Fading is caused by abnormal changes in the refractive index of the atmosphere. Normally, the atmosphere refracts or bends ...