Senior Year Design

Sana Naghipour

 

                Patch Antenna

Supervisor

Professor Spielman

Professor Morely

 

Submitted in Partial Fulfillment of the Requirement for the BSEE Degree,

Electrical and Systems Engineering Department, School of Engineering and Applied Science,

Washington University in St. Louis

 

May  2012

 

Abstract:

The goal of this project is to design a patch antenna which would pick up cellphone frequency. I preformed additional experiments to understand the antennas and their characteristics, derived the theoretical equations, and used measuring equipment to analyze the results. The prototype of the design was made first for a higher frequency which leads to a smaller antenna and would fit in the board more accurate. Successions of simulations have been proven to optimize the physical factors of the antenna for the desired resonant frequency, bandwidth and input impedance. Then the cellphone frequency was defined, and the design was developed based on that frequency. Some adjustments were made to make the new design works with limitations. The results were analyzed based on the gain, return losses, radiation pattern, and VSWR values, which are the most significant characteristics of any antenna. The simulation analysis was executed using the commercial antenna and network analyzer. The Microstrip patch antennas are new, and are designed for higher frequencies.  Patch antennaes have opened new doors to new technology, and have replaced many previously designed antennas. This proposal has been done to familiarize RF microwave designers with the design structure and performance of the patch antenna. The designed antenna can be used in lab experiments in which there is a need for an antenna which would capture certain frequencies of 842MHZ or 2.105GHZ. The transmission and reflection coefficients should prove the accuracy and good performance of the designed antenna. The more similar and more advanced design is used in mobile antenna design, GPS navigation and network communication.

 

 Final Report of the project is here

Final Poster of the project is here