An antenna system includes a plurality of transmit elements spaced apart by a first dimension and a plurality of receive elements spaced apart by a second dimension, such that the first dimension is a non-integer multiple of the second dimension and the second dimension is a non-integer multiple of the first dimension. The system includes at least one recognizer to produce output signals from audio input signals and a feedback module to collect feedback data generated from conversion of the audio input signals to output signals. In a preferred embodiment the naphthene ring opening catalyst comprises Ir in combination with a Group VIII metal selected from at least one of Pt, Rh, and Ru, in an amount effective for opening a naphthene ring-containing compound at a tertiary carbon site. The configuration and location of the geometric reference member are chosen to provide an image of the geometric reference member adjacent to an image of the periphery of the anterior chamber of the eye of a patient within a field of view of the contact lens element when the contact lens element is placed on the eye of a patient. The method for generating a tomographic image may involve: detecting a principal frequency region corresponding to a portion of a frequency data corresponding to a tomographic image, determining a plurality of sub frequency regions within the principal frequency region, and generating, by a processor, the tomographic image by synthesizing data of the plurality of sub frequency regions. At least one internal semiconductor package may be inserted into the cavity.