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With the equipment of mobile terminals with multiple antennas, a bandwidth-friendly approach for increasing data rate and reliability has become the main trend in the development of future fifth generation (5G). However, this scenario presents significant challenges in the antenna and hardware design. For further system development, building real-time testbeds is a desirable track given that this...
The influence of the person density on the indoor MIMO channel models is experimentally investigated. The path loss is modeled as a log-distance function adding additional attenuations related to both of the distance and person density. Then, the shadowing, the root mean square delay spread, and the channel capacity are described as normal distributed random variables. Their mean value and the standard...
A complementary antenna for wearable applications is proposed. By introducing a loop-monopole combined structure, unidirectional beam is obtained and the interaction between the antenna and the human body can be potentially mitigated. The antenna's operation principle is analyzed and validated at first. Then, prototypes are designed and measured. When the antenna is placed in free space, an impedance...
A planar wideband balanced antipodal dipole element is proposed. It consists of two parallel printed dipole elements with a balanced antipodal structure. By properly choosing the separation between the dipoles and the length of them, a unidirectional radiation pattern is achieved. Prototypes are fabricated and measured. It is shown that an impedance bandwidth from 4.2 to 13.5 GHz about 105.1% is achieved...
The adaptive phase-only beamforming technique is very important for conventional phased array radar to suppress interference. Similar to conventional phased array radar, for the digital array radar, the adaptive phase-only beamforming technique is also very useful and can be used to enhance the radar power by making full use of transmit module microwave power of each array element. In this paper,...
This paper, a novel half-folded antipodal slot antenna fed by microstrip line is proposed. A half-folded tapered slot and patch-like tuning stub is employed to achieve both wideband and low cross-polarization performance. For comparison, a reference rectangular slot antenna fed by microstrip line is also designed, fabricated and measured. As is reported, the operation bandwidth of this antenna is...
A compact diversity antenna for Ultra-wideband applications is proposed. The proposed antenna is composed of two square monopoles. In order to reduce the mutual coupling between the two elements, A T shape stub is introduced. The antenna has been investigated numerically. As is reported, the operation bandwidth of the antenna is from 3.3GHz to 10.4GHz. Good isolations can be achieved. It may be useful...
A printed diversity antenna for ultra-wideband applications is proposed. The proposed antenna is composed of two square monopoles. In order to reduce the mutual coupling between the two elements, A cross shape stub is introduced. The antenna has been investigated numerically. As is reported, the operation bandwidth of the antenna is from 3.3 GHz to 10.5 GHz. Good isolations can be achieved. It may...
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