An apparatus for processing a signal and method thereof are disclosed. A first 3-pass serpentine circuit is located in the forward section with a first leg connected to a showerhead arrangement of film cooling holes. Relevance factors are determined for each search result included in a given search session where the relevance factors provide an indication of user satisfaction with particular search results included in the session. Based on the feedback, the user may submit a modified bid. The polygon is bounded by lengthwise projection lines of the dual-feed and dual-band antennas.