The microwaves are the electromagnetic waves having frequencies in the range 300 MHz to 300GHz . Microwaves heat an object on which they are incident. This property is used in electrical appliances such as a microwave oven. 2. Microwave ovens are used for cooking.
Read moreWhat will C-band be used for?
C-band is currently used for the “satellite downlink ” for broadcast television distribution.
Read moreWhat is microwave frequency bands?
Microwave Frequency Bands. Microwave signals are often divided into three categories: ultra high frequency (UHF) (0.3-3 GHz); super high frequency (SHF) (3-30 GHz); and. extremely high frequency (EHF) (30-300 GHz).
Read moreWhat are the two characteristics of microwave band?
i) Because of their high operating frequencies , microwave system can carry large quantities of information. ii) High frequencies mean short wavelength, which require relatively small antennas. iii) Microwave signals are more easily propagated around physical obstacles such as water and high mountains.
Read moreHow does VHF propagation?
The primary mode of propagation for VHF radio waves is through direct waves . These travel in a straight line, becoming weaker as distance increases. Transmitting and receiving antennas must be able to ‘see’ each other for communications to be effective, so antenna height is critical in determining range.
Read moreWhat causes VHF propagation?
This is the result of the movement of cool, humid air shortly after sunset when the ground air cools more quickly than the upper air layers . The same action may take place in the morning when the rising sun warms the upper layers.
Read moreIs MHz UHF or VHF?
UHF stands for “Ultra High Frequency” while VHF stands for “Very High Frequency .” UHF can range from low band (378-512 MHz) to high band (764-870 MHz) while VHF ranges from low band (49-108 MHz) to high band (169-216 MHz). MHz stands for Megahertz and measures the speed of electronic devices.
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