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A compact antenna with dual-frequency and dual-polarization is proposed for LTE applications. Two mutually orthogonal Y-shaped bowtie radiators were adopted to provide broadband coverage for MIMO operation. Further improvement in the front-to-back ratio (F/B ratio) was achieved through the introduction of both the reflector at lower frequency band and the director at higher frequency band. The proposed...
We present a design of multi-beam antenna system using a hybrid scheme of analogous and digital beam-forming mechanisms. Exponentially tapered slot antennas are used as the array elements for a potential broadband operation. The system was prototyped to examine its characteristics in the beam-forming and interference cancellation.
Dual exponentially tapered slot antennas (DETSA) have been widely applied in a lot of communication systems due to high gain, wide bandwidth, and most importantly, ease of integration with planar circuitry. For practical implementation scenarios, it is necessary to maintain high front-to-back ratio (F/B ratio) to guarantee desired system performance. In this paper, we experimentally investigated the...
A novel design of a dipole antenna with ultrawideband characteristics is presented, which uses an additional shorter dipole as a matching element whose imaginary part (or susceptance) of input admittance compensates for that of the principal dipole in the frequency band of operation. Since both dipole elements efficiently radiate energy, the proposed twin-dipole antenna exhibits a higher efficiency...
Novel antenna structure consisting of two mutually orthogonal dipole antennas of different frequencies is proposed in this paper. With proper choice of the lengths of the two corresponding dipoles, the antenna was proven to cover a frequency band of operation from 1.6GHz to 7.7GHz, corresponding to 131% bandwidth. Moreover, the measured total efficiency was better than 75% across the band with reasonable...
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