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Patterns of Success: Antenna Patterns to Play a Key Role in WiMAX Success
White Papers This positions the base station antenna system as critical to WiMAX long-term success. Going forward, antenna pattern shaping and interference control will play a significant role in successful WiMAX deployments.
[April 22, 2009, 1:24]
Antenna to boost wireless security
News An optical antenna that uses a geometrically shaped lens promises to bring greater security to wireless networks for businesses, according to British scientists. But this new antenna is so precise, according to the researchers, that it can detect a...
[November 11, 2002, 16:12]
Antenna Selection in High-Throughput Wireless LAN
White Papers This paper presents a new method for implementing antenna selection in high-throughput Wireless LANs (WLANs), addressing two major practical concerns: antenna selection training protocol design, and calibration to solve RF imbalance problems.
[December 6, 2007, 0:01]
Antenna Design and Site Planning Considerations for MIMO
White Papers The capacity and reliability of Multiple-Input Multiple-Output (MIMO) wireless communications systems may be sensitive to the design of the antenna arrays employed at the transmitter and receiver, as well as to the nature of the propagation...
[August 23, 2007, 1:00]
Dual-Band Dipole Antenna for RFID Tag Applications
White Papers New design of a dipole antenna with rectangular fractal shape radiator element with two operating bands for Radio Frequency Identification (RFID) is presented. By using fractal shape slot and metal meander patch, the proposed antenna has the wide...
[April 14, 2009, 0:00]
A Modified Sierpinski Gasket Monopole Antenna for a PCMCIA Card Operating in the 2.4 and 5.15 GHz ISM Bands
White Papers This paper addresses the analysis and design of a modified Sierpinski gasket monopole antenna printed on a PCMCIA card. The antenna/PCMCIA card system was simulated using two commercial Method of Moment codes (IE3D and Momentum).
[June 24, 2009, 16:02]
iTunes Antenna
Downloads iTunes Antenna is a free widget which displays the iTunes Store's Top Songs, Albums, New Releases, and so on. List 25/50/100 item (set in back side) and click title, show item's detail and Artwork.
[May 22, 2007, 11:13]
A Novel Compact Cable-Fed Antenna for a GSM/DCS Handset
White Papers By using a branch-line ground plane, a monopole radiator, and parasitic patches, a newly compact cable-fed antenna is investigated in order to overcome the thickness problem of the Planar Inverted-F Antenna (PIFA).
[January 31, 2009, 6:43]
Downlink Performance and Capacity of Distributed Antenna Systems in a Multicell Environment
White Papers Distributed antenna systems (DAS) have been widely implemented in state-of-the art cellular communication systems to cover dead spots. Recent academic studies have shown that in addition to coverage improvements, DAS can also allow a capacity...
[October 11, 2005, 3:00]
Clustered OFDM With Adaptive Antenna Arrays for Interference Suppression
White Papers This paper investigates clustered OFDM with adaptive antenna arrays for interference suppression. To calculate weights for interference suppression, instantaneous correlations of the received signals and channel responses corresponding to the...
[April 13, 2007, 1:01]
Smart Antenna Systems
White Papers A smart antenna system combines multiple antenna elements with a signal-processing capability to optimize its radiation and/or reception pattern automatically in response to the signal environment. What does an antenna do in a telecommunications...
[August 14, 2003, 0:00]
Multiple-Antenna Technology in WiMAX Systems
White Papers In order to increase the range and reliability of WiMAX systems, the IEEE 802.16-2004 standard supports optional multiple-antenna techniques such as Alamouti Space-Time Coding (STC), Adaptive Antenna Systems (AAS) and Multiple-Input Multiple...
[December 1, 2004, 2:00]
Multiuser Limited Feedback for Wireless Multi-Antenna Communication
White Papers For a wireless multi-antenna network with a large number of users, the sum capacity scales at most linearly with the number of antennas and double logarithmically the number of users. It is proved that a wireless multi-antenna network using the...
[August 10, 2007, 10:56]
Performance of Antenna Selection for MIMO-OFDM Systems Based on Measured Indoor Correlated Frequency Selective Channels
White Papers This paper presents and compares antenna selection strategies for frequency selective MIMO-OFDM channels. This supports the use of antenna selection in practical MIMO-OFDM systems. Real channels are measured, and used to evaluate performance.
[April 11, 2007, 1:01]
A Low Complexity Antenna Diversity Receiver for OFDM Based Systems
White Papers A low complexity antenna diversity architecture with a new combining technique suitable for Orthogonal Frequency Division (OFDM) based systems is introduced in this paper. For a two branch antenna diversity, this structure requires only one FFT at...
[April 14, 2007, 1:01]
A Shoelace-Based QoS Routing Protocol for Mobile Ad Hoc Networks Using Directional Antenna
White Papers This paper proposes a new QoS routing protocol for Mobile Ad hoc NETwork (MANET) using directional antenna. Due to the directional antenna property, these cross links can simultaneously transmit data without any data interference.
[July 18, 2008, 1:01]
Diversity Reception for OFDM Systems Using Antenna Arrays
White Papers Antenna arrays are a powerful means to exploit the spatial domain to provide an extra layer of co-channel interference cancellation and new ways of handling unwanted channel effects for more efficient utilization of spectrum and space at any time.
[April 11, 2007, 1:01]
Design and Testing of a Feed Network for a Transparent Antenna Array
White Papers This paper describes the design and testing of a feed network for a transparent flat plate array antenna. This antenna is the top of a stack of three antennas that must occupy the same volume while pointing in different directions.
[January 9, 2008, 0:01]
Bandwidth and Gain Improvement of a Circularly Polarized Dual-Rhombic Loop Antenna
White Papers This paper presents a novel way to improve the performance of a Circularly Polarized (CP) dual-rhombic loop antenna. The bandwidth is enhanced by adding a pair of parasitic rhombic loops inside the dual-rhombic loop while the gain is increased with...
[July 11, 2008, 1:02]
Miniaturized Printed Wire Antenna for Wireless Communications
White Papers The proposed wire antenna in F-shape could have a much smaller area than an inverted F antenna with a similar bandwidth. It is found that F-antenna can usually be inductively tuned but the bandwidth decreases if size is reduced from a quarter wave...
[November 18, 2005, 0:00]
