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rfjixiaolan

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【文件名】:061030@52RD_ltcc.pdf
【格　式】:pdf
【大　小】:1000K
【简　介】:
【目　录】:



DESIGN OF A 900/1800
MHZ DUAL-BAND LTCC
CHIP ANTENNA FOR MOBILE
COMMUNICATIONS
APPLICATIONS
This article presents the design simulation, implementation and measurement of a miniaturized
900/1800 MHz dual-band low temperature co-fired ceramic (LTCC) chip antenna for mobile
communication applications. The use of a helix-monopole type dual-band antenna is realized in a
multi-layer printed LTCC structure. The Ansoft HFSS 3-D EM simulator, based on the finite-element
method (FEM), is employed for design simulation. In the simulated structure, the PCB board of the
RF circuit, connected to the chip antenna, is also included. A helix/three-monopole structure chip
antenna is designed to achieve enough bandwidth at the 900 and 1800 MHz bands. Although the
measured antenna performance is shifted to a higher frequency for both the 900 and 1800 MHz
bands, the antenna patterns of the realized chip antenna are very close to the omnidirectional pattern
of a dipole antenna at 900 and 1800 MHz.