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Electrical Engineering
How does an antenna work with harmonics?
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[QUOTE="sophiecentaur, post: 6272893, member: 199289"] Most radio antennae are not designed (it's very hard!) to operate over even a single octave of frequency range. Moreover, Transmitting amplifiers seldom handle a huge range of frequencies. About an Octave is about as much as you will ever get. A UHF Broadcast Travelling Wave Tube (a typical 'wide band' amplifier) has a wide enough bandwidth to handle a number of separate UHF channels but not over an octave frequency range. Even matching a transmitter to an antenna for a number of different channels is difficult. Most systems use a small Fractional Bandwidth. So the question in the OP doesn't make a lot of sense in the practical world. However, RF antennae are usually capable of handling a [B]Modulated[/B] RF signal which can carry a good looking square wave where the sharpness is limited by the Bandwidth allocated to the channel. An analogue TV transmitter can send 'good' black / white / black/white patterns that will satisfy the requirements of highish quality TV. The Sideband structure of the transmitted signal will consist of a fundamental and a number of (enough) harmonics within the channel width. Perhaps that was what the OP really meant. [/QUOTE]
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How does an antenna work with harmonics?
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