Engineering topics

Chiou, A. E.

Publications and source records attributed to Chiou, A. E..

2 records

NASA NTRS1984

Performance of metal meshes as a function of incidence angle

Inductive mesh transmission has been measured for the two major polarizations as a function of incidence angle. The experimental data agree well with Chen's (1970) waveguide theory in the thin mesh limit. As an aid in making more rapid predictions of mesh properties, Chen's theory is used to derive an empirical lumped circuit model. This model matches the theory and experiment to one percent over critical areas of transmission.

Pickett, H. M.↗

NASA NTRS1984

Directional Coupler With Increased Directivity

Diffraction loss reduced by curving one reflector. In improved diplexer, adjustable reflector has toroidal curvature to reduce diffraction loss through open cavity ends. Primarily used in local oscillator diplexers, new design increases signal to noise ratios and therefore ranges of millimeter and submillimeter hetrodyne receivers.

Pickett, H. M.↗