Fabrication and Miniaturization of High Gain Ultra-Broadband Microstrip Antenna for Radio Systems

Microstrip antennas are of great importance and application in commercial, military and security sectors. These antennas have an important role due to the ability to cover multiple frequency bands in police communication systems, planned and tactical communications.In this paper, a miniature microstrip antenna is presented for application in several frequency bands and improving bandwidth. Antennas designed to cover different frequency bands should have small dimensions, all-directional radiation pattern and appropriate gain. In the proposed antenna, down sizing is provided through the metametric transmission line and its nourage is provided by electromagnetic coupling system. The designed antenna is a CRLH element. The Right- Hand part is composed of a 35 - micron copper metal patch with fractal and the left part is composed of an effective homogeneous transmission line, series capacitors and parallel inductor. Antenna on FR-4 substrate is characterized by impedance of 50 ohms and frequency range of 2 to 7 GHz and is very useful in radio frequency detection, microwave, DF and PF antennas. ADS software (2022.1.2), HFSS (15.3) to cover frequency bandwidth and miniature use of a fractal compound including frequency repetition of Koch kernel the same modified snowflake and in order to eliminate the disruption in the design of the system of polarization Symmetric and improved antenna bandwidth quality has been done through the idea of splitting ground. The proposed antenna provides a compact fractal microstrip antenna that improves resonance frequency, increased gain, and suitable impedance bandwidth.