Design of silicon‐based fractal antennas

Abstract

This article presents Sierpinski carpet fractal antennas implemented in conventional low resistivity (ρ =10 Ω cm) as well as high resistivity (ρ =1500 Ω cm) silicon mediums. The fractal antenna is 36% smaller as compared with a typical patch antenna at 24 GHz and provides 13% bandwidth on high resistivity silicon, suitable for high data rate applications. For the first time, an on‐chip fractal antenna array is demonstrated in this work which provides double the gain of a single fractal element as well as enhanced bandwidth. A custom test fixture is utilized to measure the radiation pattern and gain of these probe‐fed antennas. In addition to gain and impedance characterization, measurements have also been made to study intrachip communication through these antennas. The comparison between the low resistivity and high resistivity antennas indicate that the former is not a suitable medium for array implementation and is only suitable for short range communication whereas the latter is appropriate for short and medium range wireless communication. The design is well‐suited for compact, high data rate System‐on‐Chip (SoC) applications as well as for intrachip communication such as wireless global clock distribution in synchronous systems. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:180–186, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27245

A Ferrite LTCC Based Dual Purpose Helical Antenna Providing Bias for Tunability

“…At the same time, these devices need to be smaller, lighter-weight and slimmer [2] [3]. To meet these contradictory requirements, modern devices, which typically use multiple antennas operating at different frequencies, may use a single tunable antenna that can cover multiple frequency bands.…”

Coplanar-PGL Transitions on High Resistivity Silicon Substrate in the 57-64 GHZ Band and Influence of the Probe Station on the Performances

“…The GSG configuration of the probes supports a coplanar waveguide mode, but, when the probes approach the metalized chuck beneath the wafer, other modes appear, as the MS between the probe conductor and the metalized chuck [19]. The effect of the metalized chuck, that modified the performances of the device under test, can be minimized by placing low-permittivity foam between the structure and the metalized chuck [20]. However, the effect of the metalized chuck cannot be totally removed, because of the limited space between the probes and the chuck.…”

Design and Fabrication of a Frequency and Polarization Reconfigurable Microwave Antenna on a Printed Partially Magnetized Ferrite Substrate

“…Polarization reconfigurable, frequency tunable and wideband antennas are useful in various applications such as satellite communication, imaging and sensing [1]- [4]. There is a growing interest in using radio frequency (RF) components that can sense the available spectral environment and then reconfigure the system intelligently so as to provide efficient and secure communication.…”