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The far field region in antenna refers to the region where the electromagnetic fields radiated by the antenna become more stable and independent of the distance from the antenna. In this region, the electric and magnetic fields are predominantly transverse, propagating as electromagnetic waves. The far field region is important for applications such as long-distance communication and radar systems.
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What is fraunhofer zone?
The Fraunhofer zone is a region far away from a radiating source where electromagnetic waves become approximately parallel and have a stable wavefront. In this zone, the wave characteristics are mainly determined by the spatial distribution of the source rather than the distance traveled. This zone is commonly utilized in fields such as antenna theory and optics for analyzing wave propagation.
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.
What percentage weaker is the field in this region?
The field in this region is 25% weaker compared to the surrounding areas.
What basic law of electromagnetism explain how an antenna picks up a radio signal?
RF energy is transmitted through an electromagnetic field. Once the field meets the receiving antenna, voltages are produced by using the antenna as a conductor. RF voltages induced by the antenna are passed on to the receiver then reconverted to transmitted RF information.
Why fringing field of micro strip antenna is bended at the edges of this antenna?
Rephrase the question, What antenna?
What is fraunhofer zone?
The Fraunhofer zone is a region far away from a radiating source where electromagnetic waves become approximately parallel and have a stable wavefront. In this zone, the wave characteristics are mainly determined by the spatial distribution of the source rather than the distance traveled. This zone is commonly utilized in fields such as antenna theory and optics for analyzing wave propagation.
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.
Where is the antenna for a field op on club penguin?
Its is at the ski mountain
What is the region of the earths magnetic field?
The region of the Earth's magnetic field is called the magnetosphere. It extends far into space and protects the Earth from solar wind particles and cosmic radiation. The magnetosphere is created by the interaction between the Earth's magnetic field and the solar wind.
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 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.
How do you power up the antenna on the field op missions on club penguin?
yes
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.
