Analysis of high gain multiband rounded corners dashed rectangular spiral microstrip patch antenna

Abstract

The characteristics of new high gain multiband rounded corners dashed rectangular spiral microstrip patch antenna has been analyzed using a full wave analysis simulator. The antenna performance is sensitive to the cutting angles, which has been used to control the antenna gains up to 32.8 dB in some cases and bandwidths up to 20.1 % in other cases. The proposed antenna is constructed on glass-epoxy FR-4 substrate of thickness 1.6 mm and relative permittivity 4.6 The radiation characteristics for the designed antenna such as return loss, radiation pattern and gain with respect to changes on the cutting angle are obtained using numerical simulations.

A Novel Dual Ultrawideband CPW‐Fed Printed Antenna for Internet of Things (IoT) Applications

“…Similarly, a 70 mm × 70 mm CPW-fed WLAN antenna implemented in [27] operating at 2.4 GHz with peak gain of 6.5 dB has a very low impedance bandwidth. The rounded corners concept is found in literature to enhance the overall gain, with stable radiation patterns [22][23][24][25]. Moreover, frequency dispersion is reduced and current is uniformly distributed on radiation surface corners using this procedure.…”

“…In order to reduce size and avoid the complexity, major overlapped slots have been introduced in the proposed antenna design along with two strips above and below the main radiating patch. Compact ground plane length ratio to the overall length of the antenna is optimized to achieve 50 Ohm impedance matching by adjusting the microstrip width and gap between the microstrip and the sides of the ground plane [6,8,24]. In Table 1, a comparison is made between different existing CPW designs found in literature and our proposed work.…”

“…Dual-band antenna in [21] with an average gain of 2.5 dB having dimensions 25 mm × 25 mm being compact in size operates only in WLAN band. Further, in some other designs, the antenna gains and reflection coefficient parameters are not impressive compared to the antenna dimensions [15][16][17][18][19][20][22][23][24][25]. In [26], a CPWfed multiband antenna having dimension 70.4 mm × 45 mm is implemented having an impedance bandwidth of 127 MHz for WiMAX band only.…”