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오던투야 바산체렌(Odontuya Baasantseren),오트건바타르 검보(Otgonbaraar Gombo),이동국(Dong-Kook Lee),안병철(Bierng-Chearl Ahn),김완주(Wan-Joo Kim) 한국정보기술학회 2012 한국정보기술학회논문지 Vol.10 No.7
This paper proposes a four-wire dipole antenna for the reception of satellite positioning signals onboard an artillery projectile fuze. The proposed antenna consists of two coax-fed crossed dipoles bent into the conical shape of the projectiles fuze radome. Circularly-shaped wires with suitable length are attached to the end of one of two dipoles in order to make the antenna have good gain characteristics in the projectiles forward and backward hemispheres. Antenna dimensions are optimized using a commercial electromagnetic simulation software for operation in GPS L1(1575MHz) and GLONASS(1602MHz) bands. The effects of the molding material, radome, metallic structures of the fuze are included in the design. The designed antenna is fabricated and tested. Measurements show that the proposed antenna has a maximum gain of 2.0dBiL, a nearly isotropic pattern with 7dB difference in gain, and a reflection coefficients less than -10dB over 1.567-1.627GHz.