FLAT MONOPOLE ANTENNA FOR WIRELESS LOCAL AREA NETWORK COMMUNICATION

摘要

PURPOSE: A flat monopole antenna is provided to achieve an efficient radiation of electromagnetic wave by improving impedance matching characteristics. CONSTITUTION: A flat monopole antenna comprises a component side substrate pattern(204) having a metallic grounding surface(202); an insulating substrate pattern(212) formed of an insulating material, and which supports the component side substrate pattern; and a solder side substrate pattern(210) including a monopole antenna(208) formed by repeating angular change in an antenna pattern, by 90 degrees or higher at the plane surface, and connected to a part of a micro strip transmission line(206). The solder side substrate pattern has an SMA type connector portion(209) for connection with an external antenna.