Abstract: The present invention is to enable consumers to scratch off numbers, letters, or symbols, on license plate frames, and relates to those used on automotive vehicles for advertising messages, and using a phone number, surrounding the automobile license plate and, methods for fabricating the same and, more particularly to apply to the top and or bottom side of a license plate frame an adhesive backed tape or label with a scratch off coating applied to the front side of the adhesive backed tape or label. This scratch off material is usually in the form of an ink which is usually silkscreened or baked on the tape or label, enabling consumers to scratch off the front side of the tape or label, revealing numbers or letters or symbols used in a standard message or phone number or web site address.

Abstract: A planar surface antenna comprising two conducting etched patterns on an insulating substrate where the first conductor has a planar serpentine shape defining a plurality of parallel, spaced apart radiator elements. A second etched conductor pattern has comb-like portions interleaved within the radiator elements of the first conductor. A coaxial conductor provides the feed signal to the second conductor with its ground connection to the first conductor. The resonant frequency, impedance, and bandwidth of the antenna are controlled by total length of serpentine radiator element widths and lengths. The antenna forms a non directional radiating antenna. Two of these serpentine antennas can be combined into one antenna to form a directional radiating antenna. The feed signal is connected to the second conductor of a first antenna and the first conductor of a second antenna.

Abstract: An antenna is formed from two antenna elements, a first antenna element and a second antenna element, wherein the second antenna element surrounds the first antenna element. A shorting element electrically connects the inner antenna element to the outer antenna element. An insulating gap insulates the inner antenna element from the outer antenna element except for the region where the shorting element connects the two antenna elements. A coaxial cable connects the antenna to a transceiver. The inner conductor of the coaxial cable is connected to the first antenna element and the outer conductor of the coaxial cable is connected to the second antenna element. The length of the outer perimeter of the first antenna element is equal to an integral multiple of one quarter of the wavelength of the center frequency of the antenna. The inner antenna element can be rectangular, square, circular, oval, or any similar shape. More than one antenna can be formed on a single layer of dielectric material.

Abstract: An antenna that can be used as an active receiving antenna and a transmitting antenna is formed by forming dual disk antenna elements. The dual disk antenna elements are formed by etching a pattern in a layer of conducting material, such as copper, formed on a substrate of dielectric material. One of the disks acts as the active antenna element and the other disk acts as a counterpoise antenna element. In one embodiment a RF amplifier chip is used to form an active receiving antenna. In another embodiment the RF amplifier chip is removed and the antenna can be used either as a receiving antenna or a transmitting antenna. In another embodiment a RF amplifier chip is used with an electronic switch to include the RF amplifier chip when the antenna is used as a receiving antenna and to switch the RF chip out of the circuit when the antenna is used as a transmitting antenna.