Design Rules of Internal Antenna for Mobile PhoneDesign Design Rules Rules of of Internal Internal Antenna Antenna for for Mobile Mobile Phone PhoneElectronic Wire & Cable Design Dept. Hitaka Works, Hitachi-Cable, Ltd.Hitachi-CableTypical Structure of Internal AntennaRadiatorCu/Ni plating Cu alloy platePCB (GND plane)Min. 20 mmMin. 40 mm Min. 6 mm Resin Feed Point(normally SPS)GNDWe can supply the curved antenna also.Hitachi-Cable1Basic Design of Internal AntennaMinimum Size of Antenna-Antenna size affects on Bandwidth -If VSWR ≤ 3 at each GSM bands (900, 1800 MHz) Approx. 40 (W) X 20 (D) X 6* (H) mm * Depends on shield case height under antennaPCB-There must be ground plane under antennaDistance between Antenna and Back Cover-0.5 mm typicalHitachi-CableHITACHI CABLE, LTD.Head OfficeOhtemachi-Building……