Russell C Riley

US Patent:

49437640, Jul 24, 1990

Filed:

Dec 11, 1987

Appl. No.:

7/131867

Inventors:

Pedro A. Szente - Los Altos CA
Russell B. Riley - Portola Valley CA

Assignee:

Hewlett-Packard Company - Palo Alto CA

International Classification:

G01R 1510
G01R 2104

US Classification:

324 95

Abstract:

A wide dynamic range radio-frequency power sensor having a low-power sensor portion and a high-power sensor portion is described. Both sensing portions are connected to an input signal at the same time without the use of a signal splitter. In the preferred embodiment, a single radio-frequency load serves both sensor portions. Each sensor portion has its own output terminal. The low-power sensor portion includes a pair of diodes. The high-power sensor portion (which includes the radio-frequency load) may include a pair of diodes preceded by an attenuator, or a pair of thermocouples.