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We report a novel approach using terahertz (THz) photo-induced coded-aperture imaging (PI-CAI) technique to characterize a WR-1.5 (500–750 GHz) diagonal horn antenna at 590 GHz. The measured antenna beam profiles show decent Gaussian shape and propagation properties, as expected. Antenna far-field radiation patterns extracted from beam images agree well with theory and simulation. On the basis of...
A compact size, low profile microstrip fed dual band planer monopole antenna is presented. The shape of main radiating element is modified rhomboidal that covers ultrawideband (UWB) frequency range. Further, to make dual band antenna without affecting the UWB range, stair shaped strip in elliptical shaped slot is loaded on main radiating element. The dual band antenna covers 2.36 to 2.49 GHz (Bluetooth)...
A new technique of employing gate like metallic structure on the ground plane to achieve enhanced gain and stable radiation pattern of an ultra-wideband (UWB) microstrip line fed planar monopole antenna is proposed. Two antennas with rectangular and semicircular gate like structures are designed having impedance bandwidth from 2 GHz to more than 11 GHz. The realized gain of the proposed antennas are...
Annular slot antenna having dual port and dual band which is suitable for use in the feed-back path of an oscillator resulting in an active antenna configuration by using the modern MIC and MMIC fabrication technology, compact light weight, and low cost active antenna are realized. The proposed antenna is designed to radiate and transmit equal amounts of power. The return loss of the proposed antenna...
Providing high data rates to wireless users has long been a goal that has driven the development of new technologies and standards in the past decade. Now, with the opening up of the spectrum at 60 GHz, it has become possible to design WLANs that can meet the goal of Gbps/user connectivity. This paper examines several unique design challenges brought about because of the physical characteristics of...
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