Abstract: This patent application is associated with the provisional patent applications No. 61/634,254 and No. 61/634,255 which claims the filing date of Feb. 27, 2012. This patent application is for a device which can be described as a pocket liner (and pad) designed to protect individuals from close contact to electromagnetic exposure when they carry (or using) their electronic devices close to their bodies. Studies have shown that exposure to excess electromagnetic radiation has harmful effects to humans. This device is designed to protect the user from those effects by significantly reducing exposure to electromagnetic energy from personal electromagnetic devices with minimal interference to the normal operation of the electronic device. In some realizations, the device is designed to also protect users from thermal exposure.

Abstract: A multiple-Doppler radar network can be constructed using only one, traditional, transmitting pencil-beam radar and one or more passive, non-transmitting receiving sites. Radiation scattered from the pencil beam of the transmitting radar as it penetrates weather targets can be detected at the receive-only sites as well as at the transmitter. In a bistatic system, the location of targets in Cartesian space can be calculated from the pointing angle of the transmitting antenna and the time between transmission of a radar pulse from the transmitter and detection at a passive receiver site.

Abstract: A pyramidal cone absorber structure is equated to an effective absorbing layer model having effective permittivity and permeability properties. A Riccati equation, governing the coefficient of reflection of the effective absorbing layer is derived. A computer program solves the Ricatti equation for the coefficient of reflection using initial values of complex permittivity. Iterative solutions are then obtained using increasing values of complex permittivity until no further reduction in the maximum coefficient of reflection over a specified frequency range is obtained, thus indicating optimum performance of the pyramidal cone absorber structure for a given set of cone dimensions. Optimization of the pyramidal cone absorber structure may also be optimized for a fixed set of complex permittivity values by varying the cone length and backing layer dimensions while maintaining the sum of those two dimensions constant.