This variant has better matching than the standard patch.Īnother variant of patch antenna with the partially etched ground plane, also known as printed monopole antenna, is a very versatile antenna for dual-band operations.Design of Multi-band Patch Antenna for 5G, WiFi, Bluetooth, WiMax and WLAN Applicationsĭepartment of Electronics and Communication EngineeringVisvesvaraya National Institute of Technology Nagpur, IndiaĮrigela Harinath Reddy Department of Electronics and Communication EngineeringVisvesvaraya National Institute of In this antenna, one corner of the patch (or sometimes one edge) is grounded with a ground pin. Multiple patch antennas on the same substrate (see image) called microstrip antennas, can be used to make high gain array antennas, and phased arrays in which the beam can be electronically steered.Ī variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar inverted-F antenna (PIFA). It is widely used in portable wireless devices because of the ease of fabricating it on printed circuit boards. The patch antenna is mainly practical at microwave frequencies, at which wavelengths are short enough that the patches are conveniently small. The radiation at the edges causes the antenna to act slightly larger electrically than its physical dimensions, so in order for the antenna to be resonant, a length of microstrip transmission line slightly shorter than one-half the wavelength at the frequency is used. The radiation mechanism arises from fringing fields along the radiating edges. They are the original type of microstrip antenna described by Howell in 1972 the two metal sheets together form a resonant piece of microstrip transmission line with a length of approximately one-half wavelength of the radio waves. 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. A patch antenna is a type of antenna with a low profile, which can be mounted on a surface.
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