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. 12, 2012
Filed:
Jun. 16, 2010
Uwe Renner, Leipzig, DE;
Uwe Renner, Leipzig, DE;
Bruker Daltonik GmbH, Breman, DE;
Abstract
A method is provided for measuring mobility spectrum of ions in an ion mobility spectrometer having an ion source, a modulator, an ion drift region and an ion detector disposed at the end of the ion drift region. The method includes the steps of modulating an ion current from the ion source, and measuring the mobility spectrum, where a predistortion of the continuous modulation function substantially compensates for a distortion created by the modulator. The ion current is modulated with the modulator by varying an instantaneous frequency of a continuous modulation function across a frequency range. The mobility spectrum is measured by correlating the ion current measured at the detector and the modulation function.