Frequency reconfigurable microstrip patch antenna with circular slot for K-band application

Sierpinski-Carpet Fractal Frequency Reconfigurable Microstrip Patch Antenna Design for Ku/K/Ka Band Application

“…Also, a significant increase in bandwidth is obtained upon switching the diode state. The proposed antenna is capable of being used for applications in the Ku band (12)(13)(14)(15)(16)(17)(18) and Ka band (26.5-40 GHz) in the diode OFF state and Ku, Ka, and K bands (18)(19)(20)(21)(22)(23)(24)(25)(26)(27) in the diode ON state. Out of these three bands, Ku band (also known as K-under band) is primarily used for satellite communication applications, and K band is employed for short-range applications while the Ka band (also known as K-above band) is targeted for radar and experimental communications.…”

“…Proposed design has been compared with some existing designs reported in this work [11,13,14,17,18]. Table 3 depicts the comparison of the proposed antenna with existing FRAs in terms of size and highest impedance bandwidth obtained.…”

“…Year Size (mm 2 ) Highest Bandwidth (MHz) [11] 2018 25.9 × 22.17 340 [13] 2016 86.3 × 50 - [14] 2015 25.4 × 25.4 2150 [17] 2017 28 × 30 600 [18] 2019 25 × 31 1570 Proposed design -9.5 × 7.4 3200…”

“…In [10][11][12], frequency reconfigurability is achieved by the introduction of PIN diodes as switching elements in the conventional patch antenna. Interesting and novel designs of frequency reconfigurable antennas capable of switching among four frequency bands are proposed in [13] and [14] providing multifunction operation. Polarization reconfigurable antennas also have an important role in several applications like remote sensing, tracking, and guiding owing to their ability to avoid fading losses [15].…”