where each antenna array unit comprises a plurality of antenna elements with different azimuth angles, and the different azimuth angles of the antenna elements in the each antenna array unit form a vector, where the vectors corresponding to the antenna array units constitute a vector matrix that ma...
(D) Dipole matrix with 4 elements: Frequency = 1 GHz, Max. Di-rectivity = 9.8 dBi, Min. Directivity = −54.2 dBi. (E) Microstrip patch antenna: Frequency = 1.67 GHz, Max. Directivity = 1.87 dBi, Min. Directivity = −21.2 dBi. (F) 2 × 2 microstrip antenna array: Frequency =...
As a consequence, the radiation pattern and input impedance of each array element are disturbed by the presence of the other elements. This effect is known as antenna or mutual coupling and can be evaluated through the use of a coupling matrix, as shown in Appendix C, for antennas that are...
The proposed approach is demonstrated on a four-element array for 5G MIMO applications. Each radiating element in the array is constituted from a 3 × 3 matrix of interconnected resonant elements. The technique involves (1) incorporating matching stubs within the resonant elements, (2) ...
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Antenna parameters also affect design of system (Hao & Yao, 2011). The antenna systems have been developed for tracking DSN antennas, satellite antenna like parabolic (Cesar et al., 2012; Kim et al., 2013; Min et al., 2000), corrugated horn, microstrip patch array (Hilton et al., ...
This invention relates to an antenna array system. A problem with antenna array systems is that they provide rather inefficient use of hardware and have inflexible resource allocation. The invention p
This paper proposes, for the first time, a MIMO antenna array system composing of 1x16 Quasi-Yagi antenna array, 16x16 high-dimension Butler matrix and power amplifiers for the 5G wireless communication system operating at 28GHz. Due to the integration of the power amplifiers between the radiat...
(TR) modules which operate over a broad frequency range. The TR modules are used to transmit and receive radar signals in a phase array type radar system, such as a matrix antenna array. To control each TR module in the array, a combination of oscillator and information control signals is...
An array antenna system comprises an array antenna unit including multiple antenna elements and multiple phase shifters for setting weighting coefficients of the associated antenna elements; and a weight controller that generates and outputs a control signal for adjusting the weighting coefficient for each...