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. 27, 2007
Filed:
May. 09, 2005
Ingo Ruhm, Vierkirchen, DE;
Ralf Böhnke, Esslingen, DE;
Ingo Ruhm, Vierkirchen, DE;
Ralf Böhnke, Esslingen, DE;
Sony Deutschland GmbH, Köln, DE;
Abstract
A pole switch down-converter with symmetric resonator which reduce the non resonating phase to approximately half of the RF carrier period of the modulated signal is proposed. The down-converter comprises a first and second λ/2 resonator for collecting RF energy, wherein a differential RF signal is coupled to the first and second λ/2 resonator, a switching means coupled at one end of the first λ/2 resonator and one end of second λ/2 resonator for connecting the first and second λ/2 resonator, a control means for controlling the switching means, and a detecting means coupled to the first and second λ/2 resonator for detecting the down-converted signal, wherein the control means is adapted to initiate in a down-conversion cycle the switching means to connect the first and second λ/2 resonator for approximate half of the RF carrier period of the modulated signal. With this pole switch down-converter adjacent RF channels can be selected and down-converted by slightly varying the pole switch repetition rate.