L-com offers an extensive selection of 2.4 GHz Patch Antenna solutions including wide angle, flat, round, and dual polarized patch antennas. Order online today! L-com’s 2.4 GHz WiFi antennas include over 200 models ranging from Grid, Yagi, Patch, Panel, Rubber Duck, Omni directional and more. These HyperLink brand 2.4 GHz WiFi antennas are designed for years of operation even under harsh conditions.
A 2.4 GHz patch antenna
A patch antenna is a type of radio antenna with a low profile, which can be mounted on a flat surface. It consists of a flat rectangular sheet or 'patch' of metal, mounted over a larger sheet of metal called a ground plane. They are the original type of microstrip antenna described by Howell in 1972;[1] the two metal sheets together form a resonant piece of microstriptransmission line with a length of approximately one-half wavelength of the radio waves. The radiation mechanism arises from discontinuities at each truncated edge of the microstrip transmission line.[2] 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 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. Multiple patch antennas on the same substrate (see image) called microstrip antennas, can be used to make high gainarray antennas, and phased arrays in which the beam can be electronically steered.
A variant of the patch antenna commonly used in mobile phones is the shorted patch antenna, or planar inverted-F antenna (PIFA). In this antenna, one corner of the patch (or sometimes one edge) is grounded with a ground pin. This variant has better matching than the standard patch.Another 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.[3]
See also[edit]
References[edit]
![]() External links[edit]
Retrieved from 'https://en.wikipedia.org/w/index.php?title=Patch_antenna&oldid=901006552'
Comments are closed.
|
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |