This paper presents the thoughts about application of composite grid method to solve for current distribution of the dipole.It discusses the basic principle of the method and calculation steps, compares the calculated results with the normal method (FEM) of single set of grid computing , and summarizes the application process and development direction in the future.

A novel harmonic control circuit based on the composite right/left-handed transmission lines (CRLH TLs) is presented to suppress the harmonic components of the dielectric resonator oscillator (DRO). Firstly, the principles of left-handed transmission lines (LH TLs) are introduced. Then, the design of the proposed harmonic circuit is presented and the simulated results are shown. The second- and third- harmonic components are suppressed, and the output-power at fundamental frequency has increased.