Antenna Bandwidth (antenna + bandwidth)

Distribution by Scientific Domains


Selected Abstracts


Wideband slot antenna using a new feeding technique for wireless applications

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, Issue 2 2006
Mourad Nedil
Abstract This article presents a new wideband slot antenna for wireless applications at 5.8 GHz. To improve the antenna bandwidth, a new feeding mechanism based on a capacitively- and inductively-coupled slot is proposed. To demonstrate this approach, an experimental antenna prototype operating at the 5.8-GHz band was designed, fabricated, and measured. The obtained results indicate very good agreement between the numerical and experimental results. The proposed antenna achieves a 28.5% bandwidth, a 5.7-dBi gain, and a ,15-dB front-to-back ratio, which are very sufficient for broadband wireless applications. © 2005 Wiley Periodicals, Inc. Int J RF and Microwave CAE, 2006. [source]


Adding microstrip line at the bottom of PCB for enhancing antenna bandwidth

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 9 2010
B.-G. Cho
Abstract In this article, added microstrip line at the bottom area of printed circuit board (PCB) is proposed for improving the bandwidth of GSM900, DCS1800, and PCS1900. By printing the microstrip line at the bottom area of PCB, frequency bandwidth of slim-type cellular phone which has a low-profile monopole antenna is improved. Dimension of the microstrip line is 45 mm × 9 mm. The width and length of the microstrip line is modified for good bandwidth. The measured return loss of the antenna is better than 7.3 dB for low and high band. Measured peak gains of the proposed antenna present 3.41, 5.48, and 5.95 dBi in each band, respectively. Details of the antenna design are described. Its performances are also presented. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1984,1988, 2010; Published online in Wiley InterScience (www.interscience. wiley.com). DOI 10.1002/mop.25399 [source]


Design of a planar ultra-wideband miniature monopole antenna for wireless USB dongle devices

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 5 2010
Yu-Chia Chang
Abstract This article proposes a 3.1,5 GHz ultra-wideband antenna, defined by a ,10 dB return loss. The simplified planar antenna structures, compact size, and low profile make it profitable to the application of the embedded antenna in wireless universal serial bus dongle devices. The slit shape on the monopole radiator is tuned for miniature antenna size. A parasitic stub on the ground is adopted to increase antenna bandwidth for achieving 3.1,5 GHz impedance bandwidth. To reduce manufacturing cost and practical fabrication, we also propose a simplified rectangular antenna structure. It is found that wideband characteristics of the simplified rectangular structure antenna are similar to that of semicircular base structure. Finally, the antenna prototypes are fabricated and the antenna characteristics are measured. The radiation patterns are omnidirectional in azimuth cut. Moreover, the S -parameter of antenna characteristics has been measured. The consistency between the simulated results and the measurement results confirms the practicability of these techniques. © 2010 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 1013,1016, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.25121 [source]


Bandwidth enhancement of slot-fed dielectric resonator antenna

MICROWAVE AND OPTICAL TECHNOLOGY LETTERS, Issue 2 2010
R. G. Madhuri
Abstract Novel slot-fed dielectric resonator antenna is studied experimentally. The antenna is comprised of a rectangular dielectric resonator and a mictrostrip fed coupling slot. The multiband resonances of the two radiators i.e., slot and dielectric resonator are combined to extend the antenna bandwidth. Dielectric resonator of three different thicknesses is studied, providing a bandwidth of 49.25%. The radiation patterns are measured and are presented. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 316,318, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24937 [source]