adevices in real-time and offer proximity location information[translate] arange of a radio frequency signal as shown in Figure 10, the[translate]
radio frequency beacon 射频信标机 radio frequency bridge 射频电桥,高频电桥 相似单词 radio frequency n.无线电频率 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 signal n. 1.(传递信息、命令等的)信号,手势,...
aBecause the frequency range is 145 to 148 KHz, we consider only amateur radio repeater. We assume that the propagation spacing between repeater and repeater and the propagation spacing between repeater and user are the same. In the situation of VHF spreading, the coverage can be calculated from...
The present invention provides a radio frequency signal phase-shifting circuit comprising: a first bridge, the first signal reflection circuit, a second signal reflection circuit, a second bridge, a third signal reflection circuit, a fourth signal reflection circuit, a control voltage module ; ...
Spectrum congestion and demand for higher data rates are driving a push towards higher carrier frequencies in wireless communications, necessitating sources of exceptionally pure, widely tunable radiofrequency carrier signals(1,2). There is increasing interest in the exploration of ultrawide-bandwidth optoe...
1.The frequency of the waves transmitted by a specific radio station. 2.A frequency within the range at which radio waves are transmitted, conventionally from 3 hertz to 300 megahertz, immediately below the range of microwave frequencies in the electromagnetic spectrum. ...
In a radio frequency (RF) receiver, a receiver RF chain is tuned to a first (e.g., global positioning system (GPS)) channel to permit receipt of a first (e.g., GPS) signal over the first (e.g., GPS) channel on the receiver RF chain during a first time duration. The receiver ...
Microphone Audio Jammer Work for Radio Frequency Signal Shielding Recording Audio Recorder Jammer AJ100 Please Contact with us at: Mr.Jerry Introduction of Equipment1.List of Product2.Introduction of Equipment UnitsInstructions:After getting the product, ...
radiowavesreferstotheenergywithinagivenfrequencyrange. Thereareusuallytwomeasurements Measurementstandard: 1,power(W):relativeto1watts(Watts)linearlevel.For example,thetransmitpoweroftheWiFiwirelessnetworkcard isusually0.036W,or Peoplesay36mW. 2,gain(dBm):relativeto1MW(milliwatt)oftheproportional ...
γ = 2.8 MHz/G is the gyromagnetic ratio of electron spin andBzis an external static magnetic field along the axis of NV center. Therefore, the spin state transition of NV center will provide the information of a gigahertz RF signal. Here, the frequency of the carrier wave is set ...