Chi Hsien Wang

US Patent:

60811757, Jun 27, 2000

Filed:

Sep 11, 1998

Appl. No.:

9/151365

Inventors:

Frank T. Duong - Edison NJ
Bill Engst - Sayreville NJ
Gregory J. Lamont - Jackson NJ
Chi Wang - Middletown NJ

Assignee:

Radio Frequency Systems Inc. - Marlboro NJ

International Classification:

H01P 1208

US Classification:

333212

Abstract:

A coupling structure for coupling two resonant cavities, which may be dissimilar, based on providing a metallic surface, called here a guide surface, at an angle intermediate between the orientation of the magnetic field in the two cavities. The guide surface may be one surface of a non-rectangular window cut in a wall separating the two cavities or may be the surface of a coupling screw piercing, at the intermediate angle, a rectangular window in a wall between the two cavities. In the non-rectangular window embodiment, an adjusting tuning screw is provided that screws into a notch in the guide surface. In the angled coupling screw embodiment, coupling is adjusted by providing that more or less of the angled coupling screw extends into the rectangular window. The coupling structure couples any two cavities having mutually orthogonal magnetic fields by providing the guide surface at an orientation so the magnetic field in each cavity has a non-zero projection onto the guide surface.

US Patent:

20210057114, Feb 25, 2021

Filed:

Aug 13, 2020

Appl. No.:

16/993207

Inventors:

- Cambridge MA, US
Matteo Bucci - Boston MA, US
Olorunsola Akinsulire - Jamaica NY, US
Bren Phillips - Upton MA, US
Youngsup Song - Cambridge MA, US
Chi Wang - Cambridge MA, US
Guanyu Su - Watertown MA, US
Md Mahamudur Rahman - El Paso TX, US

Assignee:

Massachusetts Institute of Technology - Cambridge MA

International Classification:

G21C 3/08
G21C 15/25

Abstract:

Engineered surfaces, such as surfaces having nano- and/or micro-scale features, may provide an enhanced flow boiling Critical Heat Flux (CHF) at ambient or higher pressures, which may enhance cooling. Enhancing flow boiling CHF may be desirable for nuclear reactors, where heat is generated by a heater such as a nuclear reactor core. Enhanced flow boiling CHF may provide larger safety margins and/or better economics of nuclear reactors, for example, because reactor power rating may be increased as cooling is enhanced.