The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 24, 2003
Filed:
Jun. 05, 2001
Blythe C. Deckman, Corona, CA (US);
David B. Rutledge, Pasadena, CA (US);
California Institute of Technology, Pasadena, CA (US);
Abstract
The present invention relates to a bias tracking network that manipulates the DC value of the control voltage applied to the active devices in each quasi-optic cell within an array of cells. The purpose of this network is to compensate for variations in the main DC bias supply voltage provided to each cell. In one embodiment, the bias tracking network includes a set of resistive voltage dividers at the boundary of each cell, together with resistors inserted within the conductors that carry a reference voltage from which the control voltage for each cell is derived. This impedance network introduced at each cell boundary causes the control voltage to “track” the variation in the voltage of the return lead (i.e., the “ground lead”) at each cell in the array, in order to maintain a consistent (or desired) control voltage distribution to each cell in the array.