How does the patch antenna work?
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How does the patch antenna work?
Working of Patch Antenna. A microstrip or patch antenna operates in a way that when current though a feed line reaches the strip of the antenna, then electromagnetic waves are generated. The waves from the patch start getting radiated from the width side.
Which of the following is used to excite to radiate the antenna?
Which of the following is used to excite to radiate the antenna? Explanation: The feedline is sued to excite to radiate the antenna in direct or indirect way.
What are microstrip antennas used for?
In global positioning satellite (GPS) systems, circularly polarised microstrip antennae are used. They are very compact in size and quite expensive due to their positioning. Microstrip antennae are also used in the fields of RFID (radio frequency identification), mobile communication and healthcare.
What is microstrip antenna patch?
An individual microstrip antenna consists of a patch of metal foil of various shapes (a patch antenna) on the surface of a PCB (printed circuit board), with a metal foil ground plane on the other side of the board. Most microstrip antennas consist of multiple patches in a two-dimensional array.
Why patch is used in antenna?
The patch antenna is mainly practical at microwave frequencies, at which wavelengths are short enough that the patches are conveniently small. It is widely used in portable wireless devices because of the ease of fabricating it on printed circuit boards.
What is meant by microstrip patch antenna?
It is a kind of internal antenna. They are mostly used at microwave frequencies. An individual microstrip antenna consists of a patch of metal foil of various shapes (a patch antenna) on the surface of a PCB (printed circuit board), with a metal foil ground plane on the other side of the board.
Why does a patch antenna radiate?
The microstrip consists of a very thin metallic strip placed on a ground plane with a dielectric material in-between. When the antenna is excited, the waves generated within the di-electric undergo reflections and the energy is radiated from the edges of the metal patch which is very low.
Is patch antenna and microstrip antenna same?
The most common type of microstrip antenna is commonly known as patch antenna. Some patch antennas do not use a dielectric substrate and instead are made of a metal patch mounted above a ground plane using dielectric spacers; the resulting structure is less rugged but has a wider bandwidth.