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A novel wideband grid array antenna with seven elements is presented in this work. The radiation elements are vertically placed above the substrate in order to broaden the impedance bandwidth. The prototype of proposed antennas is then fabricated and tested. The impedance bandwidth of the designed grid array antenna with seven elements is 36.4% in a range of 1.95 to 2.82GHz, which shows great improvement...
A zero index metamaterial lens (ZIML) is proposed in this paper for antenna directivity and gain enhancement. The zero index metamaterial (ZIM) is constructed from both electric metamaterial with near-zero permittivity and magnetic metamaterial-modified split ring resonator (MSRR)-with near-zero permeability. The ZIM unit cell is numerically simulated in CST MWS. The scattering parameters show that...
This paper has presented an omni-directional tag antenna for UHF item-level RFID applications. The RFID tag using the proposed antenna has exhibited a very good omni-directional reading pattern, which has shown great potential for item-level RFID applications in restaurants or libraries for tracking the items such as plates and books.
An efficient on-chip antenna structure in CMOS technology for system in package integration is presented. The antenna consists of a slot radiator on the top metal layer of the technology coupled to a rectangular dielectric resonator above the slot. The cavity backed slot configuration is used to isolate the antenna from the substrate. This configuration blocks the antenna interference through the...
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