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:
Feb. 11, 1997
Filed:
Nov. 14, 1995
Peter Laakmann, Bothell, WA (US);
Synrad, Inc., Mukilteo, WA (US);
Abstract
A compact drive system drives an RF-excited gas laser to produce laser energy. The drive system is implemented on a ceramic circuit board having a high dielectric constant. The drive system includes an RF energy source that produces RF energy that is transmitted by a quarter-wave transmission line to the plasma tube of the laser. The transmission line is a microstrip transmission line having a conductive strip and a conductive ground plane bonded to opposite sides of the ceramic circuit board. Such a microstrip transmission line enables the entire drive system to be implemented on the ceramic circuit board. The drive system includes a feedback path to the input of the RF energy source transistor, which enables the drive system to be self-oscillating in that the frequency of the RF energy produced is maintained equal to the resonant frequency of the laser.