A multiple feed on-chip antenna is realized in a SiGe seven metal layer backend process. The principle of an integrated lens antenna (ILA) is used and this work presents the proof-of-concept for a power-combining antenna since it can be directly connected to differential amplifiers. For measurements an adequate feeding network has to be designed which should provide the same broadband characteristic as the antenna itself. The measured antenna reaches a return loss better than -10 dB in a frequency range of 210 to 320 GHz and a realized gain of 17.5 to 23 dBi, including a power-splitter. The simulated efficiency of the on-chip antenna element, excluding the feeding network, exceeds 75%.
NASA is endeavoring in expanding communications capabilities to enable and enhance robotic and human exploration of space and to advance aero communications here on Earth. This presentation will discuss some of the research and technology development work being performed at the NASA Glenn Research Center in aerospace communications in support of NASAs mission. An overview of the work conducted in-house and in collaboration with academia, industry, and other government agencies (OGA) to advance radio frequency (RF) and optical communications technologies in the areas of antennas, ultra-sensitive receivers, power amplifiers, among others, will be presented. In addition, the role of these and other related RF and optical communications technologies in enabling the NASA next generation aerospace communications architecture will be also discussed.
A logo antenna for the 5.8 GHz ISM band is presented. The idea behind the logo antenna is to use the company or university logo as part of the antenna. When disguised as a logo, it may be more acceptable to place the antenna at optimal locations to obtain good coverage. In the present work the university logo has been used. The designed logo antenna has a measured and simulated 3-dB bandwidth of 153.1 MHz (2.6%) and 165.6 MHz (2.9%), respectively. The aperture fed, omnidirectional logo antenna is little hand sensitive.
Multiband, dual polarization dual antennas for beam reconfigurable antenna system suitable for small cell indoor wireless base stations is proposed. The whole design consists of horizontal and vertical antennas on a PCB board. Both the antennas are printed monopole type. The antenna supports LTE (1.7-2.1 GHz) and WLAN (2.5 GHz and 5.75 GHz) band frequencies. The simulated reflection coefficients |S11| of the proposed antenna shows that at operating frequencies undergo sufficient bandwidth lower than -7dB. Additionally, radiation characteristic of the presented antenna shows dual polarization behavior and switching states of the beam.
