by the dissipative circuit varies with and in the opposite sense to the current drawn by the amplifier and load so tending to maintain the current drawn from the source 6, 7 substantially constant at a value corresponding to the receiver presenting a matched load to the received carrier wave....
被引量: 10 摘要: A receiver capable of receiving a spread spectrum signal and having a crosscorrelator that enables a carrier wave (CW) jamming to be identified, tracked, replicated and removed from the received spread spectrum signal after demodulation of a weak signal has occurred.收藏...
PURPOSE: To enable a high speed detection by generating carrier wave phase display data from the quasi-phase detection signal generated from a carrier wave signal and a required reference signal and detecting the presence or absence of the carrier wave signal based on a prescribed signal to be ...
Thecarrierwave has got out of phase with the signal wave. 载波同信号波是异相的. 《简明英汉词典》 Being the importantcarrierof Logos, science and technology have become the main content of human culture. 科学技术作为理性的主要载体, 逐渐地成为人类社会文化的重要内容. ...
Click here:point_up_2:to get an answer to your question :writing_hand:a modulating signal is a square wave as shown in
A carrier signal is modulated using binary phase-shift keying (BPSK). With PSK, the phase of the carrier is shifted to represent data, as shown in Fig. 2. There does not have to be one period of the wave for each bit. There could be multiple periods per bit, for example, two ...
A circuit for converting a diphase signal into an isochronous baseband data signal, operates by extracting a clock signal from the carrier signal and combining the diphase signal and clock signal in a modulo-2 adder. The clock signal has a frequency equal to the reciprocal of the duration of...
We note that these developments were based on the 1910 demonstration by Major George Squier of the United States Army Signal Corps of his "wired wireless" technique for transmitting multiple telephone channels over one pair of wires. Power companies world-wide picked up on this carrier-wave ...
Modulator is used to change the high-frequency carrier signals, making carrier signal amplitude, frequency or phase modulated baseband signal-related. Channel transmission medium for electromagnetic radio frequency identification system (inductively coupled) and electromagnetic wave (microwave). ...
a radio wave that can be modulated in order to transmit a signal an inactive substance that is a vehicle for a radioactive tracer of the same substance and that assists in its recovery after some chemical reaction (medicine) a person (or animal) who has some pathogen to which he is immu...