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In this paper various concepts for determining the probable lane position of a vehicle mount Automatic Vehicle Identification (AVI) transponder are presented and compared for Electronic Toll Collection (ETC). In particular, various configurations of roadside mount antennas and transceivers are presented. As a practical example, the system design methodology for a fixed beamwidth Toll Plaza AVI antenna...
Based on the indoor radio-wave propagation analysis, and the fundamental limits of CMOS technology it is shown that phased array technology is the ultimate solution for the radio and physical layer of the millimeter wave multi-Gb/s wireless networks. A low-cost, single-receiver array architecture with RF phase-shifting is proposed and design, analysis and measurements of its key components are presented...
This paper presents a wideband reflective-type phase-shifter in 90 nm CMOS technology. The proposed phase shifter, employs a broadside coupler in the multi-layer metal structure in CMOS technology to attain 3-dB coupling at coupled and through ports where the phase difference between these two ports is 90deg. The reflective load contains a NMOS CMOS varactor with a tuning ratio of 3. Applying a 0-1...
Modeling and design challenges of a revolutionary low power wireless hearing aid communication system are discussed. First, we discuss the need for such wireless system. Next, we outline the basic design blocks. These blocks include modeling of the human head, developing an ultra low power transceiver, and designing packaged antennas for maximum power transfer around and/or through the head. One important...
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