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A compact hexagonal patch antenna with T‐shaped slot for frequency switching and conical radiation is presented in this article.By utilizing a PIN diode to change the configuration of the slot, two frequency bands centered at 2.29 and 2.11 GHz, respectively, are achieved. Moreover, approximations to conical beam patterns at the two frequency bands are obtained. The proposed antenna is promising for...
In this paper, a method of stagger tuned resonant frequency shift is proposed for improving the bandwidth of planar switched parasitic array antenna. By setting the active and parasitic elements of different sizes, and adjusting the feeding location on active element and loading positions on parasitic elements respectively, the bandwidth of this antenna is improved. The simulated results show that...
A frequency reconfigurable hexagonal patch antenna with switchable slot is proposed in this paper. By changing the slot status, two resonant frequency bands at 2.29GHz and 2.46GHz respectively can be obtained without special matching network, and the radiation patterns at the two frequency bands are very similar to each other. The simulated and measured results are presented to validate this concept,...
By using inconsistent patch elements in PESPAR (planar electronically steerable passive array radiator) antenna, bandwidth enhancement of this antenna is demonstrated and the relative bandwidth is 5%. Moreover, a new impedance matching method is introduced. Details of the antenna design and results are presented and discussed to validate the performance improvement.
The effect of inter-element spacing on performance of planar switched parasitic array antenna is present in this paper. Compared with the conventional planar switched parasitic element playing its role of director in reference, the paper emphasizes the switched parasitic element also act as a reflector to provide beam switching. Thus, the antenna size reduction is achieved. This advantage makes it...
This paper presents an investigation into the design parameters of a planar switched parasitic array antenna for possible use in wireless communication. This proposed antenna provides multiple radiation patterns by controlling the status of switches. The effect of the central cylindrical metal via radius, the feed location, the hexagonal patch size, the spacing between patch elements, and the ground...
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