Dual band monopole antenna based on metamaterial structure with narrowband and UWB resonances with reconfigurable quality

Self Cite

We have developed a compact antenna for wireless applications with a new shape and special attribute. It is a dual‐band antenna with a second harmonic characteristic. The antenna has a special shape of the dielectric resonator with metamaterial meandered composite right/left‐hand (CRLH) structure. The Microstrip ring antenna is the right‐hand part. We used the Microstrip meandered line via inductance for the unit cells to achieve a circular polarization and to change the current distribution at the surface of the antenna. We added a parasitic ring to the antenna to achieve the second harmonic resonance. We have connected three unit cells at the 120° angle. This special shape provides the circular polarization and compact size. The antenna has quad‐band at the first harmonic, and the resonances occurred at 2.25 and 2.8 GHz. The second harmonics happened at 4.5 and 5.6 GHz.

Section: Introductionmentioning

confidence: 99%

“…These new elements provide a left-handed (LH) and right-handed (RH) propagation and improve the impedance matching. 5 It is achieved low frequency by using negative permittivity and permeability. 6 The other technique is the dielectric resonators (DR) that is primarily utilized in microwave devices and filters.…”

Section: Introductionmentioning

confidence: 99%

Compact quad‐band second harmonic antenna based on metamaterial DRA load

Pedram

Naderi

Jafari

et al. 2019

Self Cite

“…It has been shown that the use of fractal shapes as radiating elements helps to improve the characteristics of the UWB antenna. Last years' works show that the interest in the design and implantation of the UWB antennas is continuous.…”

Section: Introductionmentioning

confidence: 99%

“…It has been shown that the use of fractal shapes as radiating elements helps to improve the characteristics of the UWB antenna. Last years' works [19][20][21][22][23] show that the interest in the design and implantation of the UWB antennas is continuous. No one of the abovementioned antenna arrays has a notch filter to reduce the effect of the UWB system on the WLAN systems working at the 5.5 GHz band.…”

Section: Introductionmentioning

confidence: 99%

UWB four elements antenna array

Ahmed

Masa‐Campos

Hernández

2018

In this work, a planar UWB four elements antenna array with and without notch filter is designed. The feeding system of the array is an UWB four branch multiple segment power divider/combiner. Each branch has a three segments impedance transformer. Measurements show that the array works well within the band 3.1 to 10.6 with S11 lower than −10 dB. It is shown that the maximum gain varies with the operating frequency having a value of 8 to 12.3 dB and that it is higher than the gain of the single element.

“…During the last decades, the wireless communication is developed rapidly with portable devices such as cell phone, laptop, tablet, and in wireless system, the antenna is an important part which should be compact with special quality for multi-band application with low profile, lightweight, and omnidirectional pattern for these applications. 1,2 Recently, the printed inverted F antenna (PIFA) has been developed in various shapes for obtaining multi-band application with omnidirectional pattern plus high efficiency based on the placement of the feed and shortening wall. 3,4 Furthermore, multiband structures are developed by implementation of various slot shape on the ground and making complicated form of the patch such as Meander ring, Inverted-S Monopole, Sub-ring, which is printed on a thin substrate.…”

Section: Introductionmentioning

confidence: 99%

Split ring resonator metamaterial loads for compact Hepta band printed inverted F antenna with circular polarization

Hatami

Naser‐Moghadasi

2018

The printed inverted F antenna (PIFA) has been developed in various shapes for the wireless application. In this paper, we have developed a novel shape based on loop antenna where it is in interaction with the split ring resonator (SRR) load and the extended ground by two vias for multi‐band antenna to cover, GSM900, GSM1800, UMTS, GSM1900, WCDMA 100, 802.11b/g, LTE2600, and 802.11a/n. The antenna total dimensions are 100 mm × 60 mm and it is fabricated on a low‐cost FR‐4 substrate. The prototype antenna has omnidirectional pattern and VSWR is lower than 3 for wireless requested frequency. We obtained 2‐4 dBi antenna gain plus 70% efficiency and circular polarization at 2.5 and 5.5 GHz. The prototype antenna shows low SAR for GSM 900 and GSM 1800 while it has checked for 1 g and 10 g with maximum value of 0.942 and 1.27 W/kg for 900 and 1800 MHz, respectively. In this new survey, the SAR value is decreased sensitively as per previous range in PIFA. The prototype has simulated with HFSS and CST that we used full wave method in both simulation software and finally we compared simulation and experimental result.