Bandwidth enhancement of dual-band bi-directional microstrip antenna using complementary split ring resonator with defected structure for 3/5 GHz applications

Abstract

<span>This paper presents a bandwidth enhancement of a dual-band bi-directional rectangular microstrip patch antenna. The novelty of this work lies in the modification of conventional rectangular microstip patch antenna by using the combination of two techniques: a complementary split ring resonator (CSRR) and a defected patch structure (DPS). The structure of antenna was studied and investigated via computer </span><span>simulation technology (CST). The dimension and position of CSRR on the ground plane was optimized to achieve dual bandwidth and bi-directional radiation pattern characteristics. In addition, the bandwidths were enhanced by defecting suitable shape incorporated in the microstrip patch. A prototype with overall dimension of 70.45×63.73 mm<sup>2</sup> has been fabricated on FR-4 substrate. To verify the proposed design, the impedance bandwidth, gain, and radiation patterns were carried out in measurements. The measured impedance bandwidths were respectively 560 MHz (3.08-3.64 GHz) and 950 GHz (4.64-5.59 GHz) while the measured gains of each bandwidth were respectively 4.28 dBi and 4.63 dBi. The measured radiation patterns were in good agreement with simulated ones. The proposed antenna achieves wide dual bandwidth and bi-directional radiation patterns performances. Consequently, it is a promising candidate for Wi-Fi or 5G communications in specific areas such as tunnel, corridor, or transit and rail.</span>

For wireless LAN application, microstrip patch antenna design in S-band

“…As a result of this comparison, a considerable improvement in the antenna gain is discovered, along with an acceptable size reduction. 3.5 GHz 1.88 [11] 3.5 GHz 5.3 [16] 3.6 GHz 2.52 [18] 3.5 GHz 4.2 [28] 3.5 GHz 4.57 4.90 5 [31] 3.5 GHz 6.05 [34] 3.5 GHz 5.43 [35] 3.29 GHz 3.38 [36] 3.36 GHz 1.07 [37] 3.5 GHz 5.8 [38] 3.45 GHz 3.83 [40] 3.5 GHz 4.28 [41] 3.45 GHz 4.64 [42] 3.5 GHz 3.338 4.66 5.08 This work 3.5 GHz 6.02 6. CONCLUSION A 3.5 GHz microstrip patch antenna has been designed in the said paper.…”

High isolation of SPDT PIN diode switch using switchable dumbbell-shaped DGS in millimeter wave 28 GHz band

“…The progression of research works on the DGSs in RF and microwave for the last 10 years have shown evidences of improvement towards design realizations and performances. DGS has several advantages on the circuit [12], unwanted frequency suppression [13]- [15], bandwidth enhancement of antennas [16], [17], size compactness [18], [19], high power handling capability [20], isolation in antenna designs [21]- [23], and compensating parasitic capacitance of switching element to improve isolation [24], [25].…”

High efficiency dielectric resonator antenna using complementary ring resonator for bandwidth enhancement

“…Moreover, many techniques were applied to improve the impedance bandwidth with patch antennas such as believed half-cut structure [7], p-in diode switching [8], Sierpinski carpet fractal monopole antenna (SCFMA) [9] and also by using double stub matching with proximity coupled feed [10]. Some researchers use two techniques such as a [11]. Moreover, by using Substrate Removal may easily enhance the bandwidth and efficiency [12].…”