Tymon Hytem-5496's Articles in Technology - MyArticlePub.com

Show All\|Display Category\|Title\|Newest\|Oldest
The Ins and Outs of Radio Receivers Signal that has to be transmitted is impressed onto a carrier wave in any of the modulation methods, and it is then amplified and applied to the transmitting antenna. The modulated signal is radiated, propagated and collected by the receiving antenna .The signal at this point is generally quite weak, therefore the receiver must first amplify the received signals. Since the signal is quite likely to be complied by lots of other unwanted signals, probably at neighboring frequencies, it must be selected and the other rejected .Finally, since modulation took place in transmitter, the reverse process of this, demodulation, must be performed in the receiver to recover the original modulating voltages. Antennas for transmission or radio waves To transmit radio waves we need Antennas. Although there are many different types of transmitting antennas available, the two principle categories are the half wave and quarter wave. Each has its own special characteristics.