ABSTRACT:The CPW-fed configurations of dual-mode ring resonator (DMRR)
To obtain the optimized antenna performances microwave studio (MWS) was used. The proposed PIFA was manufactured, and the measured experimental results are compared with the simulated results and presented in the following section. RESULTS AND DISCUSSIONThe proposed PIFA for Bluetooth, S-DMB, Wibro, WiMax, and 5 GHz WLAN applications has been fabricated and measured with an Anritsu 37377C network analyzer. Figure 3 shows the measured and simulated scattering parameters of the proposed antenna with d ϭ 13 mm, w 1 ϭ 3.5 mm, and w 2 ϭ 7 mm. As shown in Figure 3, there is good agreement between measured and simulated results. The measured impedance bandwidth at VSWR Ͻ 2.5 is about 490 MHz (2.28 -2.77 GHz) and 2530 MHz (4.04 -6.57 GHz), which is suitable for Bluetooth, S-DMB, Wibro, WiMax, and WLAN bands. To check the current flows at the resonant frequencies 2.5 and 5.5 GHz, the simulation results in Figure 4 were obtained from MWS.As seen in Figure 4, the total lengths of the current paths are about 31 and 13.6 mm, which correspond to approximately a quarter-wavelength at 2.5 and 5.5 GHz, respectively. The radiation characteristics of the proposed antenna have also been investigated. Figures 5 and 6 show the compared results of the measured and simulated radiation patterns at 2.5 and 5.5 GHz. There are reasonably good radiation characteristics and good agreement between the simulated and measured results. Table 1 shows the measured gains according to frequency. The measured maximum gain of the proposed antenna is 4.95 dBi at 6.3 GHz. CONCLUSIONSA novel PIFA for Bluetooth, S-DMB, Wibro, WiMax, and WLAN applications has been proposed and studied experimentally. The proposed antenna has a compact dimension of 24.3 ؋ 8.2 ؋ 2 mm 3 , and is able to obtain broad bandwidth by adjusting the three tuning parameters d, w 1 , and w 2 in the radiating element and A in the modified ground plane. The bandwidth of the proposed antenna with d ϭ 13 mm, w 1 ϭ 3.5 mm, w 2 ϭ 7 mm is 19.4% (2.28 -2.77 ABSTRACT: The novel configurations of dual-mode double slot-ring resonator (DMDSRR) are introduced to improve the performance of the dual-mode double-ring resonator (DMDRR). To obtain a lower insertion loss (Ϫ0.76 dB) higher rejection (Ϫ48.21 dB) and wider band (BW about 93.35%) filters using tree-shaped couples and perturbation stubs are proposed here. Both cascaded DMDSRR structure and Butterworth approximation are studied herein. Simulation results including surface current distributions and frequency responses are presented and discussed.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.