Analysis and optimisation of super‐wideband monopole antenna with tri‐band notch using a transmission line model

Abstract

A study of monopole antenna for super‐wideband applications is presented. A compact patch antenna is suggested to enhance the overall covered bandwidth (BW), where a major improvement of the BW obtained in the range 2.6–23 GHz (BW of 20.4 GHz). Also, by creating slots in the patch and in the feed line; three band‐notches are created to reject different narrowband applications. The different antenna parameters are studied using a high‐frequency structure simulator (HFSS). The measured data of the fabricated antenna shows good agreement with the simulated results with a slight shift at the lower and upper edges of the frequency range. A transmission line model of the proposed antenna is presented based on the effect of each element on the antenna behaviour. Advanced design system is used to construct and optimise the equivalent circuit model of the designed antenna. Results of the antenna behaviour obtained using the resistor–inductor–capacitor model compare favourably with the simulated results obtained using the HFSS both in the pass and rejection bands, with a small error at high frequencies.

Three‐dimensional miniaturized super wideband antenna with filtering capabilities

“…It is observed that for 3.5 GHz, the current was concentrated around the T‐shaped resonator, whereas, for 5.25 and 7.7 GHz, the current majorly lies around the corresponding U‐shaped slots (resonators). This specifies that at these frequencies, there is almost negligible radiations from the antenna 31 …”

Patch Loaded Slot Antenna for Super Wideband Applications with Dual-Band Notch Characteristic

“…Although the proposed antenna is compact and operated under low frequency region 0.9 to 100 GHz, nonetheless the suppressed band is only one which falls outside the UWB band. Similarly, a SWB monopole antenna with tri-band notch characteristic is reported in [20], but all the rejection bands belong to UWB range. Moreover, the antenna do not support the lower frequency region.…”

“…Very few of SWB antennas offered single [14]- [17] dual [18]- [19], and triple [20] band notch characteristics. However, none of the design focused on band rejection outside the UWB range.…”

Design of CPW-fed Star-Shaped Monopole Antenna for UWB Applications using Transmission Line Model

“…An optimization is used in Applied Wave Research (AWR) simulator to find the transmission line parameters such as resistance (R), inductance (L), and capaci-Fig. 1 Geometrical configuration of 9-point star-shaped (a) one-equilateral triangles, (b) twoequilateral triangles, (c) three-equilateral triangles, (d) four-equilateral triangles, (e) merge all triangles and (f) nine-point star tance (C) of the TLM equivalent circuit using the S 11 simulated parameters [16][17][18] of the proposed antenna. The 12-point star has been designed using four circles having three corners to make equilateral triangles with each radius 11 mm, and thus 9-point star will be obtained as shown in Fig 1 . The geometry of a compact CPW-fed SSMA is shown in Fig.…”