| Metamaterials is a sort of artificial material. It is made by embedding certain unit into conventional dielectric to form a new material with the new electromagnetism characteristic, which is different from natural materials. Metamaterials is the composite or structured material that exhibits properties not found in naturally occurring materials or compounds.The unique propertiesof the electromagnetic metamaterials made them have a wide applied prospect in the fields of stronger directivity antenna, super-wide-bandfilter, electromagneticwave stealth, frequency selective surface and satellite communication.This paper takes the concept of Metamaterials as the base of theory, and applies a comprehensive approach and combines theoretical analysis and simulation experiment. The paper mainly researches on Left-Hand Material and Electromagnetic Band Gap which belong to the concept of Metamaterials, focusing on the construction methods of artificial material and application to engineering. The author's major contributions are as follows: Designed and analyzed the Microstrip Patch Antenna which base on the Left-Handed materials. Microstrip Patch Antenna structures with the unit of Metamaterials of Ring Resonator embedded in dielectric material is proposed in this paper. Simulations reveals that the proposed Microstrip Patch Antenna structures with the unit of Metamaterials of Ring Resonator embedded in dielectric material, Can significantly improve the antenna radiation performance, and achieve antenna miniaturization.Designed a Microstrip Patch Antenna which is bases on the Composite right-/left-handed(CRLH) transmission-line(TL) metamnaterials with two resonant frequencies. It uses equivalent circuit model as the basic variable to analysis the Composite right-/left-handed(CRLH) transmission-line(TL). Simulations reveal that the above mentioned model can improve the performance of the antenna directivity and radiation to achieve antenna miniaturization. It designs the filter which is based on the Composite right-/left-handed (CRLH) transmission-line (TL) metamnaterials, and realizes the simulation of the filter, using equivalent circuit model with series capacitance and shunt inductor as the basic variable to analysis the Composite right-/left-handed (CRLH) transmission-line (TL) again. Analysis the composite right-/left-handed (CRLH) transmission-line in microwave Circuit Application Design. Simulations reveal that Uniplanar Compact structure can be used to make filter. Therefore, the use of left-handed materials may dramatically reduce the size of Microwave Electronic Components without being limited to Wavelength. And the use of improved filter design can overcome filter defect of the noise over band.The main content is the power/ground planes design for efficiently eliminating the Simultaneous Switching Noise (SSN) in high-speed digital circuits. By using low-period coplanar electromagnetic bandgap (LPC-EBG) structure, based on study and analysis of several kind of Uniplanar Compact Electromagnetic Bandgap structure, this paper proposes a novel power/ground planes design using half ring pattern EBG structure, compared the different cell structure parameters of EBG unit to the performance of efficient and wideband GBN suppression, simulation reveals the extinctive behaviors of broad-band suppression of the GBN.Dedigned ring resonator with thin gap EBG structure power plane and compound ring resonator EBG structure power plane. Realized simulation and compared their performance. The result of simulation revealed the three types of EBG structure power plane all have the extinctive behaviors of broad-band suppression and omnidirectional. The proposed EBG structure power plane used for PCB design for electromagnetic compatibility has extinctive performance of efficient and wideband GBN suppression, which has an expected application in engineering. Among the three types of the ring resonator structures, ring resonator with thin gap EBG structure power plane has the best performance on suppression bandwidth and noise-level.The Design of the New Rectangular Planar Smart Antenna.Studied several kinds of algorithms, designed two types of Planar Smart Antenna. Realized the simulation of planar smart atenna planar arrays by using the LMS algorithm. Proposed the way of designing the planar antenna model. Further explored the LMS (Least Mean Squares) algorithm as adaptive digital beam forming algorithm. Because the LMS (Least Mean Squares) algorithm is one based on gradient, the The Convergence of the Algorithm is closely related to the step sizeμ. Found that only when the value of the step size is appropriate can we insure the algorithm to converge fast and suppress the interference signal efficiently by using the experimental method. Studied the impact of adaptive performance of angel of incident signals direction and found the valid range of angel of incident signals direction.
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