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Technically, an antenna only works with good safety and efficiency at one single
frequency, or over a narrow band of contiguous frequencies. If you need to operate
over a wide band of frequencies, or in several different bands, with high efficiency,
you'd nominally need several separate antennas. Since that would be a real pain,
several trustworthy, loyal, helpful, friendly, courteous, kind, obedient, cheerful, thrifty,
brave, clean, clever, competent, dedicated, and innovative engineers ... most of them
being obviously ham radio operators ... figured out how to build antennas that would
work well over a wide range of frequencies or on widely separated bands. One such
category of antennas is known as the multi-band dipoles, for the basic design that
they resemble. The 'dipole' antenna is generically one with equal lengths of radiator
extending in two opposite directions from the end of the "feeder" (transmission line),
and it is this design with which tricks may be played in order to derive many wideband
and multiband designs.
What else can I help you with?
How does dipole motion behave in a uniform field?
In a uniform field, dipole motion aligns with the field, causing the dipole to rotate until it is parallel to the field.
What is the torque experienced by a dipole in a uniform field?
The torque experienced by a dipole in a uniform field is equal to the product of the magnitude of the dipole moment and the strength of the field, multiplied by the sine of the angle between the dipole moment and the field direction.
What electric field parallel or anti parallel to the electric dipole?
An electric field parallel to an electric dipole will exert a torque on the dipole, causing it to align with the field. An electric field anti-parallel to an electric dipole will also exert a torque on the dipole, causing it to rotate and align with the field in the opposite direction.
How does a torque affect the dipole in an electric field?
A torque applied to a dipole in an electric field causes the dipole to align itself with the direction of the field. The torque will tend to rotate the dipole until it reaches the stable equilibrium position where it is aligned with the electric field.
What is two opposite electric charges separated by a short distance called?
Two opposite electric charges separated by a short distance are called an electric dipole.
What is a prefix for band?
A prefix for band is "multi-," meaning multiple or many.
What does tri band mean?
In telecommunications, the terms multi-band, dual-band, tri-band, quad-band and penta-band refer to a device (especially a mobile phone)
Types of molecular attraction?
Ion-dipole, Dipole-dipole, and Dipole-induced dipole.
What is the operational frequency of half wave dipole antenna?
Its resonant frequency is where its length is half a wavelength, so for 100 MHz the wavelength is 3 metres and a 1.5-metre long dipole is resonant. A dipole antenna can be used for many applications within a band of 10-20% around the resonant frequency.
What kind of forces is a dipole-dipole force?
Dipole-dipole interactions are of electrostatic nature.
What do you call a musician that plays more than one instrument?
One-Man Band or Band man^ I don't know who answered that but a person who has the ability to perform & play on more than one instrument is called a "Multi-instrumentalist"...
What is it called when white light is broken down into a multi colored band?
rainbow
When would dipole-dipole forces be significant?
When molecules have permanent dipole moments
What kind of force is a dipole dipole of force?
Dipole-dipole interactions are of electrostatic nature.
Does ch3cl have dipole-dipole attractions?
Yes, CH3Cl (methane) has dipole-dipole attractions. This is because the molecule has a net dipole moment resulting from the uneven distribution of electrons around the carbon and chlorine atoms. This dipole moment allows CH3Cl to exhibit dipole-dipole interactions with other polar molecules.
Is CH2O a dipole dipole?
yes it is dipole dipole as it contain one electron attracting atom chlorin which create dipole in molecule.
Which has the smallest dipole-dipole forces NO O2 HBr or CH3Cl?
O2 has the smallest dipole-dipole forces because it is nonpolar, lacking a permanent dipole moment. The other molecules listed (NO, HBr, CH3Cl) all exhibit polar bonds and have dipole moments, allowing for stronger dipole-dipole interactions.
