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What is fraunhofer zone?
Fraunhofer zone is another name for far field in telecommunications. It is an area where antenna signal looses its resolution.
What Far field approximation gives?
if we're talking about a short dipole, you have {E.H} field depending by r^(-k), where r is distance between antenna's feed and point of {E,H} calculus and k is >=1. In far field, you can imagine r>>1, so r^(-k) contribution is lower for greater k and you can approximate {E,H} expression by considering only the contribution with the lowest k. This make Poynting vector become real, according with the assumption that far field radiation power is active, near field one has also a capacitive contribution.
How does an antenna convert electromagnetic waves into a current?
According to Faraday's law: "When current is passed through a conductor, an EM field is produced surrounding it." As an antenna contains one or more conductors, the terminals of which are connected to some voltage, when this voltage at the terminals is applied, it produces/induces the alternating current which radiates the elements in the electromagnetic field. (Transmission) The reverse of this occurs in reception; where the electromagnetic field from another source induces an alternating current in the antenna, and a corresponding voltage at the antenna's terminals.
Why it is possible to define an electrostatic potential in a region of space that contains an electrostatic field?
Because there is an electrostatic field in that region of space
What relates a magnetic field changing with time in a region of space to the electric field induced in that region of space?
Faraday's Law
What is fraunhofer zone?
Fraunhofer zone is another name for far field in telecommunications. It is an area where antenna signal looses its resolution.
Why fringing field of micro strip antenna is bended at the edges of this antenna?
Rephrase the question, What antenna?
Where is the antenna for a field op on club penguin?
Its is at the ski mountain
What is the region of far north?
the far north region
Where is the EPF antenna in club penguin field-ops?
Its on ski hill
What electrical device powers the RFID?
The RFID is powered by its own antenna. When in the presence of a pulating magnetic field, the antenna generates a signal that can power up the RFID, causing it to generate its code on top of that field.
Can you hook up a CB to your car antenna?
Yes, you certainly can. But the car antenna probably won't work as efficiently as one that's specifically designed for CB. That means you probably won't be able to hear as far or talk as far as you could if you used the right antenna.
How do you power up the antenna on the field op missions on club penguin?
yes
What Far field approximation gives?
if we're talking about a short dipole, you have {E.H} field depending by r^(-k), where r is distance between antenna's feed and point of {E,H} calculus and k is >=1. In far field, you can imagine r>>1, so r^(-k) contribution is lower for greater k and you can approximate {E,H} expression by considering only the contribution with the lowest k. This make Poynting vector become real, according with the assumption that far field radiation power is active, near field one has also a capacitive contribution.
What should be the position of the antenna with respect to the direction of the transmitted radio waves so that the properly tuned in radio gives the better reception?
The antenna should be parallel to the electrostatic field of the wave, and perpendicular to its magnetic field and to its direction of propagation.
What type of antenna used in rfid?
All types... depending on frequency and application. Lower frequency RFID's are typically near field and use inductive antenna designs, higher frequency ones use far-field designs. Low frequency RFID's like the TIRIS pet ID's use coils of wound wire. HF type RFID's like MiFARE use simple planar loop antenna designs. Most VHF RFID's use dipole and modified dipole designs with reflector elements. UHF and microwave RFID's frequently use patch and slot antenna designs.
What are the properties of the fastest wave travels?
The fastest traveling wave is the transverse wave of electromagnetic radiation. Along the radiating antenna, it travels at the speed of light. There are two velocity components in space: one is the radial component, which also travels at the speed of light. The other is the transverse velocity component, which increases with distance. In the far, far field, it is much greater than the speed of light. The characteristics of the antenna electromagnetic dynamic field waves were plotted directly from the well known radiation equation,
