Inset Fed Rectangular Patch Antenna
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The document discusses the design and characteristics of an inset fed rectangular patch antenna, highlighting its structure, functionality, and applications in wireless devices. It also mentions the use of HFSS, a simulation tool for electromagnetic structures, in designing antennas at specified frequencies. The document includes results related to antenna model, return loss, input impedance, radiation pattern, gain, and bandwidth.
Inset Fed Rectangular Patch Antenna
- 1. 1 The University of Jordan School of Engineering – Electrical Engineering Communication Circuit Inset Fed Rectangular Patch Antenna Suliman Jamal Rahhal 0144887
- 2. 2 Introduction A patch antenna (also known as a rectangular microstrip 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; 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. The radiation mechanism arises from discontinuities at each truncated edge of the microstrip transmission line. 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 called microstrip antennas, can be used to make high gain array 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. 3 HFSS Simulation About HFSS: a commercial finite element method solver for electromagnetic structures from Ansys. The acronym stands for High Frequency Structure Simulator. It is one of several commercial tools used for antenna design, and the design of complex RF electronic circuit elements including filters, transmission lines, and packaging Design Specifications • Antenna Dimensions The standard design for 2.4 GHz inset fed rectangular patch antenna.
- 4. 4 The design is customized such that the patch of the antenna will be changed. So, the dimension will be changed also to keep the frequency 2.4Ghz as shown in figure below • Sweep Setup
- 9. 9 5. Gain
- 10. 10 6. Bandwidth