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A square slot circularly polarized (CP) microstrip antenna with enhanced bandwidth is presented. The proposed antenna consists of a C-shape patch and four rectangular strips around the four corners on the lower ground, and is excited by a microstrip feedline. A broadband CP antenna can be achieved by adjusting the size of the strips. The measured results of -10 db impedance bandwidth is 157.2% (2-16...
For powering small wireless IoT nodes, compact, efficient rectifying antennas have been realized. A first design for 868 and 915 MHz is described. Based on the lessons learned, a new design for 2.45 GHz is realized that is a factor 13 smaller in size.
In this study, we designed and simulated an embedded spiral-shaped microstrip patch antenna for medical biotelemetry applications. Important design parameters were studied to understand their effect on the antenna performance. The antenna is able to download patient's health information from the implanted devices. Sonnet Suite, a 3-D Planar Electromagnetic simulation tool is used for simulations....
In this paper, a rectangular slotted square patch antenna with a floating ring and single point feed is presented. The proposed patch antenna, when optimized, achieved the highest gain of 7.17 dB at 7.12 GHz with −6.97 dB input match. Which presented theta polarized radiation pattern. Simulations conducted by changing the size of inner ring shape and high gains were observed between the frequencies...
This paper reports the development of a Circularly Polarized (CP) microstrip patch array working at Ku band and in particular between 16.9–17.2GHz for remote sensing applications. The design is based on a sequential rotation of four linearly polarized rectangular patches and appropriate phase shifts provided by a corporate feed network. The agreement between measurements and simulations carried out...
In this paper, effects of F antenna arm length on the frequency, gain and s11 values are studied. The arms and the total length of the F determine the resonance frequency of the antenna. The inverted F shaped antennas are used in the cell phones. The outcome showed that the middle length of the antenna determines the input match and gain of the antenna. We achieved the highest gain of 6.32 dBi at...
In this paper, we designed, simulated, built and test ‘E-shaped patch antenna with five resonances’ that gives 9 dB radiation pattern gain. Our simulation and experimental investigation aimed to understand the behavior of the two slits. The first frequency is 4.64GHz with 8.5dB gain the second frequency is 5.3GHz with 7.10dB gain, the third frequency is 10.1GHz with 9dB, the fourth is 12.9GHz with...
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