A Compact Slot-Antenna With Tunable-Frequency for Wlan, Wimax, Lte, and X-Band Applications

A Compact Dual Asymmetric L-Slot Frequency Reconfigurable Microstrip Patch Antenna

“…This may be due to soldering or fabrication tolerances [24]. The measured S 11 values range from −15 dB to −21 dB which falls under a generous range for a radiating patch antenna, according to various literatures [3,14,19].…”

“…4.75 GHz, 5.05 GHz, 5.11 GHz, and 5.18 GHz. The C-band frequencies of 5.4 GHz band (5.15 to 5.35 GHz, 5.47 to 5.725 GHz, or 5.725 to 5.875 GHz, depending on the region of the world) are used for IEEE 802.11a Wi-Fi wireless computer networks, and several antenna designs are found in the literature working in this band [19,20]. In [21], 4.8 GHz band is used for wireless implantable body area network (WiBAN), and in [22], it is reported to be used for future 5G applications.…”

Design of miniaturized tri‐band antenna based on differential evolution algorithm

“…In recent years, the most recent technology in how to adjust the geometry based on a known geometry to achieve the required specifications and best design which requires more experience through a trial and error process has been developed, on the other hand, the ability to develop highly nonintuitive solutions that would be difficult to achieve using traditional methods, many algorithms have recently been utilized in antenna design, [1][2][3][4][5][6][7] and it is a successful method of antenna optimization that meets all requirements, and fully automated design procedures, for example, geometric dimensions, are based on predefined design criteria. 8,9 Evolutionary methods, such as the evolution algorithm, have found widespread application in fields ranging from engineering, economics to artificial intelligence, [10][11][12] furthermore, Increasing computational power will strengthen the role of numerical approaches in solving complex problems in the near future.…”

“…In recent years, the most recent technology in how to adjust the geometry based on a known geometry to achieve the required specifications and best design which requires more experience through a trial and error process has been developed, on the other hand, the ability to develop highly nonintuitive solutions that would be difficult to achieve using traditional methods, many algorithms have recently been utilized in antenna design, 1–7 and it is a successful method of antenna optimization that meets all requirements, and fully automated design procedures, for example, geometric dimensions, are based on predefined design criteria 8,9 …”

Frequency Reconfigurable Antenna With Conical Radiation Pattern and Wide Tuning Range

“…Frequency reconfigurable antennas have received much attention because they are helpful to increase spectrum utilization efficiency and relax the requirements of filters. A considerable number of designs related to the frequency reconfigurable antenna have been reported [1][2][3][4][5][6][7][8][9][10][11][12]. A linear slot antenna is often used to realize the frequency reconfigurable design, and the antenna operation band can be controlled with the PIN diodes embedded into the slot.…”