Applications Of Microstrip Patch Antenna
- Applications Of Microstrip Patch Antenna
- Biomedical Applications Of Microstrip Patch Antenna
- Microstrip Patch Antenna Design
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. Download adobe audition crack free. 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]
Applications Of Microstrip Patch Antenna
- Microwave Radiometer (Juno) (Space probe instrument, uses patch array antennas)
The following image shows a micro-strip or patch antenna. The length of the metal patch is λ/2. When the antenna is excited, the waves generated within the di-electric undergo reflections and the energyis radiated from the edges of the metal patch,which is very low. Radiation Pattern. The radiation pattern of microstrip or patch antenna is. PDF This paper contains microstrip patch antenna designed with Inset feed technique. The antenna is mainly intended to be used for WiMAX (2.2-3.4 GHz) & WLAN (2.40–2.48 GHz) wireless applications.
References[edit]
- ^'Microstrip Antennas,' IEEE International Symposium on Antennas and Propagation, Williamsburg Virginia, 1972 pp. 177-180
- ^'Radiation from Microstrip Radiators,' IEEE Transactions on Microwave Theory and Techniques, April 1969, Vol. 17, No. 4 pp.235-236
- ^J. R. Panda, Rakhesh Singh Kshetrimayum, 'A Printed 2.4 GHz/5.8 GHz Dual-band Monopole Antenna with a Protruding Stub in the Ground Plane for WLAN and RFID Applications, ' Progress In Electromagnetics Research, vol. 117, pp. 425-434, 2011
External links[edit]
Biomedical Applications Of Microstrip Patch Antenna
- Patch Antenna Tutorial EM Talk