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Book ChapterDOI

Multiband High-Gain Antenna with CPW Feed for Wi-Fi, WI-MAX and X Band Application

01 Jan 2018-pp 145-152
TL;DR: A novel U-shaped slot antenna for Wi-Fi and X band applications which gives a significantly higher gain and better performance than the existing antennas aimed for the same application and a significant reduction in conduction loss was obtained.
Abstract: Due to the recent developments in the domain of wireless network, the demand of multi frequency antenna has increased significantly. Wi-Fi has become a very popular choice available to the end users, providing them broadband connectivity and an alternative to cable and digital subscriber line, while X band finds extensive use in RADAR and satellite communication systems, and the proposed design can be put to use where there is a need for integration of both technologies. In this study, the authors have developed a novel U-shaped slot antenna for Wi-Fi and X band applications which gives a significantly higher gain and better performance than the existing antennas aimed for the same application to validate the model the structure was simulated in HFSS and operating frequencies for the proposed antenna were in compliance with the IEEE 802.11 WLAN protocol and the X band range. The structure has a fairly simple design and is having a fairly compact dimension of 40 mm × 40 mm × 1.6 mm. Moreover, the obtained radiation pattern demonstrates that proposed antenna has a significantly unidirectional pattern in both E-plane and H-plane. In addition to the unidirectional radiation pattern, a significant reduction in conduction loss was obtained.
References
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Book
01 Jan 2001
TL;DR: In this paper, the authors describe the characteristics of conventional, Micromachined, and Superconducting Coplanar Waveguides, as well as their transitions in directional couplers, hybrid, and magic-Ts.
Abstract: Preface Introduction Conventional Coplanar Waveguide Conductor-Backed Coplanar Waveguide Coplanar Waveguide with Finite-Width Ground Planes Coplanar Waveguide Suspended Inside A Conducting Enclosure Coplanar Striplines Microshield Lines and Coupled Coplanar Waveguide Attenuation Characteristics of Conventional, Micromachined, and Superconducting Coplanar Waveguides Coplanar Waveguide Discontinuities and Circuit Elements Coplanar Waveguide Transitions Directional Couplers, Hybrids, and Magic-Ts Coplanar Waveguide Applications References Index

1,225 citations

Journal ArticleDOI
TL;DR: In this article, a miniaturized multifrequency antenna is proposed, which consists of a circular ring, a Y-shape-like strip, and a defected ground plane.
Abstract: A miniaturized multifrequency antenna is proposed. The proposed antenna can generate three separate impedance bandwidths to cover all the 2.4/5.2/5.8-GHz WLAN operating bands and the 2.5/3.5/5.5-GHz WiMAX bands. The proposed microstrip-fed antenna mainly consists of a circular ring, a Y-shape-like strip, and a defected ground plane. By adding a Y-shape-like strip in the circular ring, the antenna excites two resonant modes and is with miniaturization structure. Because of the introduction of the cambered ground plane with an isosceles triangle-defect, the third wide band with better impedance matching is obtained. A prototype is experimentally tested, and the measured results show good radiation patterns and enough gains across the operation bands.

251 citations

Journal ArticleDOI
TL;DR: In this paper, a dual broadband rectangular slot antenna for 2.4 and 5 GHz wireless local area network (WLAN) is proposed, which uses a U-shaped strip inset at the center of the rectangular antenna.
Abstract: A novel dual broadband rectangular slot antenna for 2.4 and 5 GHz wireless local area network (WLAN) is proposed. With the use of a U-shaped strip inset at the centre of the rectangular slot antenna, the obtained impedance bandwidths for two operating bands can reach about 10.6% for the 2.4 GHz band and 33.8% for the 5 GHz band, which cover the required bandwidths of IEEE 802.11b/g (2.4-2.484 GHz) and IEEE 802.11a (5.150-5.950 GHz). Details of the antenna design and experimental results are presented and discussed.

130 citations

Journal ArticleDOI
TL;DR: In this article, a compact microstrip fed dual-band coplanar antenna for wireless local area network (WLAN) is presented. The antenna comprises of a rectangular center strip and two lateral strips printed on a dielectric substrate and excited using a 50 Omega microstrip transmission line.
Abstract: A novel compact microstrip fed dual-band coplanar antenna for wireless local area network is presented. The antenna comprises of a rectangular center strip and two lateral strips printed on a dielectric substrate and excited using a 50 Omega microstrip transmission line. The antenna generates two separate resonant modes to cover 2.4/5.2/5.8 GHz WLAN bands. Lower resonant mode of the antenna has an impedance bandwidth (2:1 VSWR) of 330 MHz (2190-2520 MHz), which easily covers the required bandwidth of the 2.4 GHz WLAN, and the upper resonant mode has a bandwidth of 1.23 GHz (4849-6070 MHz), covering 5.2/5.8 GHz WLAN bands. The proposed antenna occupy an area of 217 mm2 when printed on FR4 substrate (epsivr=4.7). A rigorous experimental study has been conducted to confirm the characteristics of the antenna. Design equations for the proposed antenna are also developed

127 citations

Journal Article
TL;DR: In this paper, a dual polarized microstrip patch antenna is proposed for Ku-band applications and the antenna has a compact structure and the total size is 15 mm × 15 mm.
Abstract: A dual polarized microstrip patch antenna is proposed for Ku-band applications. The corner chopped square patch with four bent slots is adopted in this design. The antenna has a compact structure and the total size is 15 mm × 15 mm. The result shows that the impedance bandwidth (VSWR ≤ 2) of the proposed antenna is 950 MHz (7.76%). The antenna with reduced size is also able to achieve the stable radiation performance with a maximum gain of 7.6 dBi in the operating band of 11.76 GHz to 12.71 GHz and the gain variation is about 0.8 dBi. The present design provides a maximum of -26 dB isolation level between the two ports and a stable low cross polarization level for both Eand H-planes. Details of the proposed antenna design and results are presented and discussed. The patch shows a high matching level in Ku-band and isolation elements that makes it suitable for wireless and satellite communication. Dvojno polarizirana mikrostrip antena za Ku-frekvenčni pas Kjučne besede: dvojna polarizacija, mikrotrakasta antena, Ku-frekvenčni pas, visoka izolacija Izvleček: V prispevku opišemo mikrotrakasto anteno z dvojno polarizacijo za uporabo na Ku-frekvenčnem pasu. Antena ima kompaktno strukturo in je velika 15 mm x 15 mm. Rezultati kažejo pasovno širino ( VSWR ≤ 2) 950 MHz (7.76%). Tako zmanjšana antena zmore stabilno sevanje z maksimalno ojačitvijo 7.6 dBi znotraj pasovne širine med 11.76 GHz do 12.71 GHz in stabilnostjo ojačitve znotraj 0.8 dBi. Trenutna zasnova omogoča maksimalno izolacijo med stopnjama -26dB in stabilno nizko križno polarizacijo med E in H ravnijo. V članku so opisane podrobnosti in rezultati predlagane zasnove antene.

45 citations