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:
Jul. 18, 2000
Filed:
Sep. 11, 1998
Applicant:
Inventor:
Josef Fenk, Eching, DE;
Assignee:
Siemens Aktiengesellschaft, Munich, DE;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H03L / ;
U.S. Cl.
CPC ...
331 47 ; 331 12 ; 331 19 ; 331 50 ; 331 51 ; 455255 ; 455258 ; 455259 ; 455260 ; 455263 ; 455264 ; 329304 ; 329308 ;
Abstract
Parasitic feedback is prevented in a transmitter, a modulator, or a demodulator from having an interfering influence on the circuit section that generates the mixed frequency. The circuit has a main oscillator and a subordinate oscillator connected downstream of the main oscillator. The main oscillator generates a signal having an x.sup.th harmonic that serves to excite the subordinate oscillator. Furthermore, a frequency divider is connected downstream of the subordinate oscillator. The frequency divider divides the frequency of an output signal of the subordinate oscillator by an integer divider value. The divider value differs from the value x.