نتایج جستجو برای: bands antenna

تعداد نتایج: 92447  

2010
J.-Q. Sun X.-M. Zhang Y.-B. Yang R. Guan L. Jin

A compact ultra-wideband microstrip-fed planar monopole antenna with dual band-notch characteristic is presented. Dual notched frequency bands are achieved by embedding an M-slot in the radiating patch and a W-slot in the ground beneath the feeding line. And the characteristics of the dual band-notched can be controlled by adjusting the length and position of the corresponding slot. Experimenta...

2014
Princy Gupta Pooja Sharma

A Planar Inverted-F Antenna for LTE2300 (2.3-2.4 GHz), WLAN (2.4-2.484 GHz), and LTE2500 (2.5-2.69 GHz) bands has been presented in this paper. The proposed structure has a dimension of 18 x 13 mm over the ground plane of size 100 x 50 mm which can easily be implanted in the small space available within the mobile device. The proposed structure is having an impedance bandwidth ranging from 2.16...

2018
Fizzah Jilani Akram Alomainy

This letter presents a novel and compact antenna array suggesting geometrical modifications in the concept of collinear arrays at millimeter-wave (MMW) spectrum. The extension of the standard narrowband Franklin linear antenna array in a compact two-dimensional (2D) assembly is proposed and multiband response is accomplished in this work which fulfills demands of future 5G systems. The proposed...

2009
Raj Kumar George Mathai

This paper presents the design of Electromagnetic Bandgap (EBG) structure using fractals geometry and its effect on antenna performance. The EBG structure has been designed on substrate єr = 4.3 and thickness h = 1.53 mm. The 1 iterative EBG structure offers the surface wave attenuation around 20 dB down from 2.94 GHz to 4.58 GHz corresponds to 43.62% bandwidth. The experimental results of 2 it...

2014
Haider A. Sabti Jabir S. Aziz

New design of obtaining a dual frequency bands antenna operate on the dual frequency bands of the Global System for Mobile Communications (GSM) (Lower band = 900 MHz, Upper band = 1.9 GHz) with a single-feed square micro-strip antenna are proposed and experimentally studied. The proposed designs are based on the same patch dimensions configured with one rectangular slot in the form of cut insid...

2011
Ibrahim Tekin Michael Knox

A reconfigurable microstrip patch antenna with RF pin diode switches is implemented for dual band of 2.4 GHz and 5.6 GHz WLAN Software Defined Radio (SDR) applications. For the dual band SDR system, the use of a single antenna with a wide bandwidth to cover both of the bands can be limiting for low power level signal applications due to wideband noise as well as changing radiation pattern at di...

2014
Neng-Wu Liu Long Yang Zhi-Ya Zhang Guang Fu Qiong-Qiong Liu

A novel microstrip antenna for triple-band WLAN/WiMAX applications is presented. Based on a face-shaped slot, the antenna consists of a pair of symmetrical eye-like patches, a smilingmouth-shaped feeding line and a rectangular stub that looks like the fringe. The resonant mode at 3.5GHz is excited by the basic radiation patch with the face-shaped slot. By adding a rectangular fringe-shaped stub...

2012
Akhilesh Kumar Aadesh Kumar Arya Reshu Gupta

With the rapid development of wireless communication systems, the multiple separated frequency bands antenna has become one of the most important circuit elements and attracted much interest. In order to satisfy the IEEE 802.11 WLAN standards and the worldwide interoperability for microwave access (WiMAX) bands, various antennas for wide band operation have been studied for communication and ra...

2015
Hari S. Singh Gaurav K. Pandey Pradutt K. Bharti Manoj K. Meshram

A planar, printed multiple-input multiple-output (MIMO) antenna for slim mobile handset is presented. The dual-antenna system, comprises two symmetric antenna elements, is printed on a printed circuit board (PCB) of mobile phone. Each antenna element consists of coupled-fed loop antenna. The loop antenna is formed by a quarter wavelength (at 762MHz) meandered loop strip with end terminal short-...

2014
Tapan MANDAL Santanu DAS

In this paper, a coplanar waveguide (CPW) fed hexagonal shape planar antenna has been considered for ultra-wide band (UWB). This antenna is then modified to obtain dual band rejection. The Wireless Local Area Network (WLAN) and Wireless Microwave Access (WiMAX) band rejections are realized by symmetrically incorporating a pair of L-shape slots within the ground plane as well as a couple of I-sh...

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