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A new radio system that deterministically uses reflection waves is proposed. This system transfers data on the rotating polarization wave (RPW), which rotates the polarization at enough lower frequency than that of propagation to digitally control it. The receiver discriminating a deterministic reflection wave of the RPW by selecting the polarization that the transmitter uses achieves good nonline‐of‐sight...
In a slow fading/fixed environment, a deep fade might last for several symbol durations, and all the transmissions during such a deep fade become highly unreliable. Rotating polarization is an RF technique to artificially induce fading in a static environment, and thus reduce the chance of prolonged deep fades. However, this technique makes the channel vary at a high rate and hence increases the complexity...
A special code is studied that discriminates finite areas of equal length. This code, which includes an equal number of positive and negative unity bits, has balanced characteristics. The subset of the balanced codes that have characteristics orthogonal to each other is useful for discriminating the finite areas. Such a subset is found by the brute force method and the proposed algorithm that generates...
Computer assisted design in conceptional phase is very useful for not only reducing development cost, especially human resource cost, but also creating a novel function. Since the performances of microwave devices and circuits can be precisely simulated by using Maxwell's equation and electrical circuit theory, conceptional design by computer is very useful for these devices and circuits. This report...
We are developing a new radio architecture for applying a wireless communication system to controlling and monitoring systems in industrial infrastructure systems. Using polarization angle diversity, we can achieve reliable communication in a non line-of-sight situation. To realize polarization angle diversity, we use a rotating polarized radio wave. When we use polarization angle diversity, we need...
We are developing new radio architecture for applying a wireless communication system to controlling and monitoring systems in industrial infrastructure systems. Using polarization angle diversity, we can achieve reliable communication in a non line-of-sight situation. To realize polarization angle diversity, we use a rotating polarized radio wave. When we use polarization angle diversity, we need...
Computational design of a symmetric antenna system for wireless power transmission is proposed. The pair of antennas, which consist of small conductive segments, provides the two-port circuit of which ports are feeding points of the antennas. The two-port parameters of this circuit, which are obtained using the method of moments, and the complex impedance of both the power generating and loading circuits...
An efficient method for computational design for an antenna with a finite ground plane was devised. A matrix equation by means of using voltage flows was formulated by using an inverse-matrix/reverse-equation method within the method-of-moment (MoM) framework. Double-layered -zigzag-indexing for discretized induced currents provides a matrix equation incorporating a small work area. The radiation...
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