Sim, SH Kang, CY Choi, JW Yoon, YJ Yoon, SJ Kim, HJ 2024-01-21T09:04:12Z 2024-01-21T09:04:12Z 2021-09-03 2003-04-10 0254-0584 https://pubs.kist.re.kr/handle/201004/138644 In the paper, the design of the multilayer helical dipole antenna (MHDA) for International Mobile Telecommunications-2000 (IMT-2000) handset, which is compact and has a wide impedance bandwidth, is demonstrated. The MHDA can obtain size-reduction and wide impedance bandwidth by using dielectric material (epsilon(r) = 7.8), fabricating helical conductor pattern, and designing the structures with high radiation resistance. The MHDA consists of a rectangular-parallelepiped ceramic body and helical conductor patterns are embedded in the body using LTCC technology. The simulations are performed to obtain a good impedance matching by high frequency structure simulator (HFSS). A 3D structure design of MHDA suitable for IMT-2000 (1920-2170 MHz) handset has been implemented, and experimental results are presented and discussed. (C) 2002 Elsevier Science B.V. All rights reserved. English ELSEVIER SCIENCE SA Multilayer helical dipole antenna for IMT-2000 handset Article 10.1016/S0254-0584(02)00249-3 1 MATERIALS CHEMISTRY AND PHYSICS, v.79, no.2-3, pp.111 - 115 MATERIALS CHEMISTRY AND PHYSICS 79 2-3 111 115 scie scopus 000181157200003 2-s2.0-0037431183 Materials Science, Multidisciplinary Materials Science Article MHDA LTCC dielectric helical IMT-2000