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The aim of this conference paper is to introduce a novel and effective diagnosis method for defective array elements by hybrid Compressive Sensing (CS) and Iterative Shrinkage Thresholding Algorithm (ISTA). The proposed method utilizes the framework of Compressive Sensing and the sparse signal is constructed via difference incentives of reference array without failures and array under test with failure...
The power loss of electromagnetic wave in plasma is analyzed and calculated in this paper. An experiment scheme is proposed to measure the electromagnetic wave attenuation in plasma. The experiment scheme includes a plasma flat slab consist of several plasma tubes. The attenuation characteristics of electromagnetic waves in plasma are measured by horn antenna.
Real frequency technique is an efficient method for the optimization design of broadband matching networks. This paper mainly uses the real frequency technique for the design of HF broadband antenna impedance matching network. The network parameters were calculated for two real frequency methods by MATLAB and we compared the two methods of corresponding matching performance. On this basis, some optimization...
A new plasma monopole antenna is proposed in this paper. The cylindrical plasma antenna is fed by a metal ring. The impedance characteristics and radiation characteristics of the plasma antenna are calculated and analyzed. According to actual situation, a cylindrical plasma monopole antenna is designed and measured. The measurement results are similar to the calculation results.
For radiation characteristics research on antenna coated with a plasma sheath, an axially slotted cylinder antenna is presented. The proposed antenna is composed of a narrow slot cut in the wall of a hollow circular cylinder. The working band width is about 200 MHz. The plasma sheath media was simulated with laminate medium given by drude dispersion model. The electron density in layered plasma model...
A novel broadband omnidirectional antenna is presented in this paper. The antenna is proposed for operating at mobile telephone bands. To achieve simple structure, the proposed antenna is composed of three monopoles in a plane. The impedance matching and bandwidth for the presented antenna are mainly affected by length and separation of the three monopoles. The theory of basic three monopoles antenna...
A novel ultra wideband planar reflector antenna is presented in this paper. The proposed antenna is composed of a circular disc dipole and a finite reflector plane. The impedance matching and bandwidth for the presented antenna are mainly affected by the diameter of the disc and feeding separation. The theory of ultra wideband planar reflector antenna is discussed and simulated. By properly choosing...
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