New circularly polarized frequency independent antennas with conical beam or omnidirectional patterns /

"Contract AF33(616)-6079 Project No. 9-(13-6278) Task 40572. Sponsored by: Wright Air Development Center"

Distributed coupling to surface wave antennas /

Includes bibliographical references.

On increasing the effective aperture of antennas by data processing /

Includes bibliographical references (p. 58-59)

Axially excited surface wave antennas /

"Contract No. AF33(616)-310 RDO No. R-112-110 SR-6f2"

Input impedances of some curved wire antennas /

"June 1962".

Frequency independent antennas,

Includes bibliography (leaf 11).

Impedance properties of complementary multiterminal planar structures /

"Contract AF33(616)-6079 Project No. 9-(13-6278) Task 40572. Sponsored by: Wright Air Development Center"

Coupled waveguide excitation of traveling wave slot antennas /

"Contract No. AF33(616)-3220 Project No. 6(7-4600) Task 40572 Wright Air Development Center"

A planar geometrical model for representing multidimensional discrete spaces and multiple-valued logic functions /

Bibliography: p. 37-38.

Surveys of electromagnetic field intensities near representative higher-power FAA transmitting antennas /

Mode of access: Internet.

Plane-wave scattering-matrix theory of antennas and antenna-antenna interactions /

Mode of access: Internet.

Planar vibrations of chlorinated benzenes,

Mode of access: Internet.

Design handbook for high temperature aerospace antennas.

"Technical report AFAL-TR-65-267"

Improvement of compact terminal antenna performance by incorporating open-end slots in ground plane

This letter describes a new idea of increasing operational bandwidth of a compact planar inverted F antenna (PIFA) by introducing open-end slots in the ground plane under the radiating patch. The slots are not in the way of active modules of a wireless transceiver and thus the proposed antenna size reduction method is attractive from the point of view of practical implementation.

Numerical evaluation of three dimensional effects in planar flow birefringence

The influence of three dimensional effects on isochromatic birefringence is evaluated for planar flows by means of numerical simulation. Two fluid models are investigated in channel and abrupt contraction geometries. In practice, the flows are confined by viewing windows, which alter the stresses along the optical path. The observed optical properties differ therefore from their counterpart in an ideal two-dimensional flow. To investigate the influence of these effects, the stress optical rule and the differential propagation Mueller matrix are used. The material parameters are selected so that a retardation of multiple orders is achieved, as is typical for highly birefringent melts. Errors due to three dimensional effects are mainly found on the symmetry plane, and increase significantly with the flow rate. Increasing the geometric aspect ratio improve the accuracy provided that the error on the retardation is less than one order. (C) 2004 Elsevier B.V. All rights reserved.