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A dual-resonant quad-layer transmitarray element is proposed in this paper. The element can be used to construct a circularly polarized transmitarray which converts linearly polarized incident wave into circularly polarized outgoing wave. The element operates at 30GHz and is designed through the principle of multilayer frequency selective approach [1]. By varying the element's dimensions, a full transmission...
A three-layer transmitarray element with 360° phase range is proposed in this paper. It adopts receiver-transmitter approach: the receiver receives incident power and the power is transferred to the transmitter through a plated-via and phase delay line. A phase shift range of 180° can be achieved as the length of the phase delay line varies from 0.6 mm to 2.8 mm. When the interconnection point between...
A multiband conformal fin-shaped antenna with parasitic element for vehicle communication devices is presented. The proposed antenna is small, fin-shaped for vehicle communication application. This structure includes a irregular-shaped microstripe with parasitic element on fin-shaped ABS metrical, generating multi-bands of about 350, 800, 1800 and 2400MHz. The obtained bandwidth covers UHF, CDMA,...
Performance of Multi-User Multi-Input Multi-Output (MU-MIMO) systems with a 15-port compact antenna cube is measured and studied in typical scenarios proposed in this paper. The cube provides 15 individual channels and is ideal for Multiuser MIMO communications, especially when transmit antenna selection technology is adapted. Experimental measurements were carried out to evaluate the performance...
A measurement system to measure the 3-D spatial response of the indoor multi-polarized channel is presented and fabricated, the channel response data are also acquired to demonstrate the validity of that system For the indoor radio channel is quasi-static, the rotating directivity antennas are applied in the transmit/receive ends to avoiding the deterioration factors(the mutual coupling, pattern distortion...
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