Any number of things can stand between a transmitter and receiver and "connect" them. If we're talking about electromagnetic radiation (like radio waves), these signals can move through the vacuum of space, through air, or through a number of other materials. Metals and other substances that are good conductors will be resistant to penetration by or will stop radio waves. The frequency of the electromagnetic radiation will have something to do with what it will "go through" to allow it to be "connected" to a receiver.
There is one thing to remember in parting: electromagnetic radiation does not need a medium through which to travel. It carries the energy of the radiation "with it" when it goes. That allows this form of energy to move through the vacuum of space. Compare this to something like a sound wave, which is mechanical energy. With waves that are mechanical energy, the medium through which the wave moves must carry the energy of that wave. Said another way, the source of the mechanical energy must put its energy into the medium for that medium to propagate the wave.
Some devices have the receiver and transmitter built into the same device. Some devices use only a detector and register changes in emitted IR "patterns" (for example) to infer motion.
A duplexer is a device that allows bi-directional (duplex) communication over a single channel. In radar systems, a device that isolates the receiver from the transmitter while permitting them to share a common antenna. Note 1: A duplexer must be designed for operation in the frequency band used by the receiver and transmitter, and must be capable of handling the output power of the transmitter. Note 2: A duplexer must provide adequate rejection of transmitter noise occurring at the receive frequency, and must be designed to operate at, or less than, the frequency separation between the transmitter and receiver. Note 3: A duplexer must provide sufficient isolation to prevent receiver desensitization.Braimah prosper
Same as the "regular" radar, except that the receiver is a bit different. In regular radar, the receiver looks for the returning signal on the frequency the transmitted pulse was sent out. Yes, it sees" Doppler shifted signals, but with decreasing sensitivity. And it does little with them but combine them with the signal on the frequency of the transmitted pulse. With Doppler radar, the receiver looks for a "band" or group of frequencies around the frequency at which the transmitted pulse was sent out. These "nearby" frequencies represent returns from materials or substances that are moving relative to the transmitter (toward or away from it). And the receiver works with a microprocessor based "analyzer" to paint a picture based on those returning signals that are near the frequency of the transmitted signal and not right on it. Basically, radar has a transmitter, the waveguide to the antenna, the antenna itself, and the receiver. The receiver is plumbed into the same waveguide the transmitter is connected to, but there is a junction (like a "T") where the transmitter and receiver are connected that is capable of directing the transmitted signal out along the waveguide and keeping it from going into the receiver, and then allowing the returned signal to get to the receiver without being "lost" by going back into the transmitter. There is a control system and a display system associated with the equipment as well. Just as one might expect.
Yes, a radio receiver can be located with another receiver or tracer, most radio receivers is of the regenerative type and it has a local oscillator that is used to generate an intermediate (IF) signal of 465Khz on shortwave and 10.7Mhz on the higher frequencies like a FM or TV receiver, that oscillator is like a low power transmitter that is transmitting an un-modulated RF signal. Any nearby receiver can pick up this signal although no sound will be heard on the receiver, to be able to hear a signal the tracer is equipped with a BFO, (Beat Frequency Oscillator) that will generate an audible tone when a signal is received, the same way as the local oscillator generate the IF signal but only in the audible frequencies and a signal strength meter, then with a directional antenna, the receiver that is to be traced can be pin pointed.
Yes, a tower can hold a antenna high off the ground allowing a better signal to the receiver or from the transmitter.
juhari
the transmitter and the receiverAnswerAside from transmitter and receiver, one component in telecommunication is the medium between transmitter and receiver. Medium may include copper wire, air or coaxial cable.
The feed line is the cable or other transmission line that connects the antenna with the radio transmitter or receiver
Waves, such as electromagnetic or sound waves, travel from a transmitter to a receiver by propagating through a medium or the vacuum of space. When a transmitter generates waves, they travel outward in all directions until they reach the receiver where they are detected and converted into a usable form of signal. The speed and distance the waves travel depend on the specific properties of the wave and the medium through which they are propagating.
signal source+Transmitter+medium(copper wire, coaxial cable, air)+receiver
Having a built-in ir transmitter receiver is a fabulous idea
receiver
Receive, acquire
It is easier to buy then to biuld try sparkfun.com they have small receivers transmitter
fixed wireless
Yes.
In the oral communication process the speaker is the transmitter and the intended recipient is the receiver.