نتایج جستجو برای: antenna phased array
تعداد نتایج: 175671 فیلتر نتایج به سال:
There are a number of potential applications for low cost short range phased array radar sensors: ship bumpers, large vehicle sensors and level crossing obstacle detection for example. Phased arrays have the benefit of reduced size and the elimination of moving parts compared with more traditional rotating antenna systems. Another potential benefit is that the image update rate can be orders of...
In this paper, the role of radiation elements in the performance of reflect array antenna is studied, and each element is designed and simulated and the phase response is compared. Also, the relations needed for designing reflect array antenna are discussed and one sample reflect array antenna is designed in the KU band and the results are presented.
In this paper, new method for reduction of Specific Absorption Rate (SAR) in mobile handset is presented. The idea is based on the array antenna theory and this caused that by improvement of the gain, SNR be preserved and instead of one antenna and one strong hotspot, have the two antenna with two weak hotspot. For this array, the antenna must be equal with similar pattern to have the best arra...
Abstract: The MIMO phased array radar is a theoretical concept for multi-sensor radar planning that combines elements of traditional phased-array radar with the developing technology of multiple-input multiple output (MIMO) radar. Space-time coding (STC) has been shown to play a key role in the design of Phased Array MIMO radar where MIMO radar can achieve improved localization performance by ...
In this paper, the problem of target detection in phased-MIMO radars is considered and target detection performance of phased-MIMO radars is compared with MIMO and phased-array radars. Phased-MIMO radars combine advantages of the MIMO and phased-array radars. In these radars, the transmit array will be partitioned into a number of subarrays that are allowed to overlap and each subarray transmit...
This paper present a circular patch microstrip array antenna operate in KU-band (10.9GHz – 17.25GHz). The proposed circular patch array antenna will be in light weight, flexible, slim and compact unit compare with current antenna used in KU-band. The paper also presents the detail steps of designing the circular patch microstrip array antenna. An Advance Design System (ADS) software is used to ...
294 Abstract — In this paper the beamforming and radiation pattern of various linear and planar phased antenna arrays configurations are presented. They are intended for use in indoor location estimation and wireless process monitoring applications based on the determining of direction-of-arrival (DOA) of radio signals by measuring the angle-of-arrival (AOA). Beamforming and the steering of ant...
A 60 GHz-band four-element integrated planar phased array is proposed. Each antenna element is integrated with evenharmonic I/Q mixer compromised of anti-parallel diode pairs (APDPs) for the adaptive beamforming systems.
• Using adaptive nulling, an antenna system can reconfigure the receive antenna to produce nulls at the locations of any interference sources. Typically, two generic types of adaptive nulling antennas are considered: the thinned phased array and the multiple-beam antenna. The thinned phased array has excellent nulling resolution but is not a good candidate for area coverage. The multiple/beam a...
In this paper, a high performance phased antenna array is designed. Compared with the traditional ones, this antenna array has a lower sidelobe characteristic of down to −16 dB. At different scanning angles, the comparison between calculated and measured results of S-parameters and Eand H-plane antenna patterns is made and a very good agreement is found. Moreover, the precorrected fast Fourier ...
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