RADIATION-COUPLED DUAL-L ANTENNA INTEGRATED WITHIN A CHIP PACKAGE
S. MESTDAGH, G. A. E. VANDENBOSCH

Introduction
As a consequence of the availability of very compact integrated circuits, full systems can be integrated in one single chip. Due to the desire for small, light devices in wireless consumer electronics, efforts are being made continuously to shrink antennas and integrate them within the housing or package containing the chip. This has a very positive effect with respect to undesired parastic inductances often caused by soldering and wire bonds. However, antenna miniaturization is restricted by some physical limitations, more specifically the efficiency bandwidth product is ultimately limited by the size of the antenna relative to the wavelength of operation.
In this paper we analyze a topology enabling dual-band or wide-band operation, depending on its design. This topology is integrated within a typical chip package. The effects of this integration on the characteristics and performance of the antenna is discussed. The numerical results of this analysis are compared to measurements of a prototype of the complete structure.