What is a patch antenna used for?
A patch antenna is a low-profile directional radio antenna that is used for indoor locations covering single-floor offices, stores and small studios. It is mounted on a small, rectangular, flat surface and consists of two metallic plates placed upon each other.
What is Patch in antenna design?
A simple microstrip patch antenna consists of a conducting patch and ground plane between them is a dielectric medium called the substrate having a particular value of dielectric constant. The dimensions of a patch are smaller as compared to the substrate and ground.
What are the types of patch antenna?
The commonly available shapes of patch antenna are rectangular, circular, dipole, triangular, square and elliptical with rectangular and circular shapes the most common.
What do you mean by microstrip patch antenna?
Micro strip antennas are low-profile antennas. A metal patch mounted at a ground level with a di-electric material in-between constitutes a Micro strip or Patch Antenna. These are very low size antennas having low radiation.
Who invented patch antenna?
Just stumbled up on the news that Robert E Munson (“Bob Munson”) passed away on August 31, 2015. He is the inventor of what is popularly known as “microstrip patch” antenna.
What is the gain of patch antenna?
A single patch antenna provides a maximum directive gain of around 6–9 dBi. It is relatively easy to print an array of patches on a single (large) substrate using lithographic techniques.
Who invented the patch antenna?
Bob Munson
The patch may be in a variety of shapes, but rectangular and circular are the most common. Invented by Bob Munson in 1972. Became popular starting in the 1970s.
What are the main parts of a microstrip patch antenna?
The Microstrip Patch Antenna is a single-layer design which consists generally of four parts (patch, ground plane, substrate, and the feeding part). Patch antenna can be classified as single – element resonant antenna. Once the frequency is given, everything (such as radiation pattern input impedance, etc.) is fixed.
What are patch antennas made of?
A patch antenna is a type of antenna with a low profile, which can be mounted on a surface. It consists of a planar rectangular, circular, triangular, or any geometrical sheet or “patch” of metal, mounted over a larger sheet of metal called a ground plane.
What is substrate in patch antenna?
A dielectric substrate is a insulator which is a main constituent of the microstrip structure, where a thicker substrate is considered because it has direct proportionality with bandwidth whereas dielectric constant is inversely proportional to bandwidth as lower the relative permittivity better the fringing is …
Is patch antenna omnidirectional?
Abstract: An omnidirectional microstrip patch antenna, capable of reconfiguring both polarisation and radiation pattern is proposed. It operates with two orthogonal ±45° slanted linear polarisations and can produce two dipole-like radiation patterns, providing 360° coverage in either the horizontal or elevation plane.