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We propose a frequency reconfigurable slot dipole antenna mounted with surface PIN (S-PIN) diodes. Instead of using conventional chip-packaged PIN diodes, a plasma channels induced on the S-PIN diodes with high carrier concentrations are used to electrically change effective lengths of the slots. Thus, by turning on and off the S-PIN diodes, we can make our antenna operate in three different frequency...
We propose a new method of enhancing antenna gain and an impedance matching bandwidth at the same time using simple frequency selective side reflectors. The proposed reflectors are installed on both sides of a feeding dipole antenna, which are located at a similar height of the dipole from a ground plane. In order to accomplish our goal, we use a new anti-Fabry-Perot (AFP) resonance mode created from...
Wireless networking protocols are increasingly being designed to exploit a user's measured channel condition; we call such protocols channel-aware. Each user reports the measured channel condition to a manager of wireless resources and a channel-aware protocol uses these reports to determine how resources are allocated to users. In a channel-aware protocol, each user's reported channel condition affects...
The existing IEEE 802.16 is a series of Wireless Broadband standards known as WiMAX as an important technology for providing high-speed Internet access to home and business subscribers in a wide area cellular network. It has defined real time and non-real time services. But the standard does not specify transmission scheduling schemes to support the services. In order to support the delay sensitive...
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