Abstract
In this paper is presented the good solution to enhancement gain by using physical plane plate reflector with optimum distance by a reflector was used with the antenna and using a sweep parameter for the distance at which the reflector was placed at (, we found the best distance is when selected the bandwidth is 28GHz where . The gain at the bandwidth in 28GHz was improved from (5.48, 6.78, and 7.83) dB to 11.53 dB, while the gain without a reflector is 7.1 dB. The simulation results were obtained using CST which was more consistent with the practical results.
Highlights
The principle of reflector antenna in reality for the first time in 1963 demonstrated by Berry et al [1]
phase-only optimization method (POM) consists of two main stages, the first stage focused on finding the number of the radiated-elemen that may occupy the outer surface of the reflector which leads to determining the overall size of this particular reflector
In order to improve the gain in the proposed antenna, a reflector was used with the antenna and using a sweep parameter for the distance at which the reflector was placed at (4,8 12,16) mm, we found the best distance is λ when the selected 28GHz bandwidth is λ = 12 mm The gain at a bandwidth at 28GHz was improved from (5.48, 6.78, and 7.83) dB to 11.53 dB, as shown in Figure 6 and Figure 7 shows the compression between the gain with reflector antenna and the gain without a reflector
Summary
The principle of reflector antenna in reality for the first time in 1963 demonstrated by Berry et al [1]. In 1977, Phelan devised a new technique is to attach a switching diode with each arm of the four arms of the spiral antennas [2] Using this idea, the radiated beam in the broadside direction gained a wide scanning angle [3]. After nearly 20 years, microstrip patch with an extension called phase delay component is utilized in reflectarray designing Due to this extension, it absolutely was attainable to provide wider phase range for the reflected wave by changing the length of this extra component [4]. The actual level type in the reflector may be used for the ease of analysis and accuracy of performance required and most antennas used in the spacecraft use this type of reflector for the wave [5]. This technique has many other techniques for the design and implementation of the antenna system and the CST program has been used to design the antenna with the reflector for the wave
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