Abstract
A novel design concept of new periodic interdigital structure for total transmission is proposed from the perspective of electromagnetic (EM) field in this paper. The new structure is constructed in two-dimensional (2D) firstly by using the constructive interference of EM fields, and its transmission characteristic and band structure are calculated. Based on the calculated results, the interaction of the structure with EM fields is clearly demonstrated to provide a better physical understanding for the structure design. Meanwhile, the final three-dimensional (3D) implementation of the presented structure in actual printed circuit board is conducted for its potential applications. The maximum transmission frequency, bandgap and electric field distribution calculated by using the 2D structure and its final implementation all testify the validity of the realization process.
Highlights
Periodic structures composed of dielectric, metal or metallodielectric element exhibit a bandgap prohibiting the propagation of electromagnetic (EM) fields [1]
When periodic structures are operated at microwave and millimeter-wave frequencies, they are often referred as electromagnetic bandgap (EBG) structures
EBG structures provide a popular solution to the mutual coupling reduction in patch antenna arrays [10]
Summary
Periodic structures composed of dielectric, metal or metallodielectric element exhibit a bandgap prohibiting the propagation of electromagnetic (EM) fields [1]. When periodic structures are operated at microwave and millimeter-wave frequencies, they are often referred as electromagnetic bandgap (EBG) structures. EBG structures have attracted much attention due to their wide applications in developing components for microwave and millimeter-wave devices as well as in antenna design [2]–[10]. The interaction of the structures with EM fields needs to be further revealed to provide a more general design methodology of periodic structure. A novel design concept of new periodic interdigital structure for total transmission is presented from the perspective of EM field to provide a solution to the aforementioned problems. The transmission response of the proposed structure is calculated to demonstrate the above design concept and the band structure is analyzed to investigate the bandgap. The final implementation of the proposed structure and reference structure are simulated and measured to verify the realization process
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