Analysis of a 10.6-Micron Printer-Circuit Antenna Array.

A printed-circuit antenna array for a wavelength of 10.6 microns is shown to be feasible, using analysis by the method of moments. An example of a thin dipole is analyzed before proceeding to the more complicated infrared dipole. Due to present printed-circuit technology, the infrared dipole must be a two-dimensional dipole, resulting in both axial and lateral components of current. Analysis shows that the lateral current, although fairly large, may be dropped without affecting the dipole radiation pattern. Mutual coupling between dipoles is used to determine the radiation pattern from the system the result is a pencil beam normal to the plane of the antenna array. Author