Abstract
In this paper, far-field pattern of one-dimensional leaky-wave antenna (LWA) is directly synthesized by sinusoidally modulating surface currents of the antenna. Due to the characteristic of light cone in distinguishing surface waves and radiation waves, the numbers of the beams are selectable depending on the modulations. A one-dimensional substrate integrated waveguide (SIW) antenna producing two beams are designed and fabricated. Measurements agree very well with the simulations, indicating the validity of the presented synthesizing method as well as the practicalities of the presented SIW antenna.
Highlights
During the investigations of guiding waves, leaky waves are considered to be improper waves with abnormal complex propagation constants until the proper explanation is revealed.[1]
A one-dimensional substrate integrated waveguide (SIW) antenna producing two beams are designed by using the method
L 2 in which, l is total length of the line source; I(z ) and Φ(z ) are amplitude and phase of the effective electric current at position z, respectively; θ is the elevation angle measured from the broadside direction
Summary
During the investigations of guiding waves, leaky waves are considered to be improper waves with abnormal complex propagation constants until the proper explanation is revealed.[1]. Xiang Wan,a Tian Yi Chen,a and Tie Jun Cuib State Key Laboratory of Millimetre Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, China (Received 13 November 2016; accepted 9 February 2017; published online 21 February 2017) A one-dimensional SIW antenna producing two beams are designed by using the method.
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