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:
Sep. 29, 1992
Filed:
Nov. 05, 1991
Jong-Hae Kim, Suwon, KR;
Samsung Electronics Co., Ltd., Suwon, KR;
Abstract
A frequency-modulation modulator in a cellular wireless telephone for modulating frequency after uniformly and linearly compensating for frequency characteristics to be suitable for each engaged channel in a cellular wireless telephone. Since frequency modulation characteristics are compensated uniformly and linearly according to each one of a plurality of channels, an error due to the frequency distorted modulation can be prevented and the cellular wireless telephone becomes more reliable. The frequency-modulation modulator includes a controller for providing data to assign the channel by sensing a transmitting/receiving channel, and for generating a switch control signal corresponding to each channel, and of a frequency compensator for compensating for frequency characteristics according to each channel by regulating a gain of an input channel by means of the switch control signal from the controller, and of a capacitance converter for converting a given voltage value from the frequency compensator into a capacitance value, and of a resonator for generating a given resonance frequency with the capacitance value of the capacitance converter, and of a voltage controlled oscillator for generating an oscillation frequency to modulate the corresponding frequency based on the resonance frequency.