| Patent application number | Description | Published |
|---|
| 20080315921 | DIGITAL FREQUENCY DETECTOR AND DIGITAL PHASE LOCKED LOOP USING THE DIGITAL FREQUENCY DETECTOR - A digital frequency detector and a digital phase locked loop (PLL) are provided. The digital frequency detector includes a first conversion unit which outputs a first frequency as first frequency information of a digital type using a first ring oscillator that operates in a high-level period of the first frequency, a second conversion unit which outputs a second frequency as second frequency information of a digital type using a second ring oscillator that operates in a high-level period of the second frequency, and an operation unit which outputs a digital frequency for the first frequency by calculating a ratio of the first frequency information to the second frequency information. | 12-25-2008 |
| 20080317180 | RECEIVING APPARATUS CAPABLE OF REMOVING INTERFERENCE SIGNAL AND METHOD THEREOF - An apparatus and method capable of interference signal removal is provided. The receiving apparatus includes a signal reception unit, a sampler which samples signal with carrier wave frequency, a signal filter, and a signal combiner. | 12-25-2008 |
| 20090027088 | HIGH RESOLUTION TIME DETECTING APPARATUS USING INTERPOLATION AND TIME DETECTING METHOD USING THE SAME - A high resolution time detecting apparatus using interpolation and a time detecting method using the same are provided. The time detecting apparatus includes a delayer which generates delayed signals by sequentially delaying a reference signal using a plurality of delay elements, a latch unit which outputs latch signals using the delayed signals, and an interpolation unit which outputs interpolated signals using input and output signals of the delay elements. As a result, a high resolution TDC using an interpolation and a time detecting method using the same provide improved performance of digital PLL, high resolution digital signal output at a low power consumption, and controlled circuit size. | 01-29-2009 |
| 20090079610 | DIGITAL-TO-ANALOG CONVERTER (DAC) - A digital to analog converter (DAC) is provided. The DAC includes a first loop unit to receive a plurality of sources and comprising a plurality of primary winding of transistors formed at a plurality of locations, and a second loop unit comprising secondary windings to correspond to the primary windings, to receive the plurality of sources through the first loop unit, and combine the plurality of sources and output the result. Accordingly, a DAC is capable of directly converting a digital signal into an RF analog signal. | 03-26-2009 |
| 20090215423 | MULTI-PORT CORRELATOR AND RECEIVER HAVING THE SAME - A multi-port correlator and a receiver having the same are provided. A multi-port correlator includes an oscillating unit which generates a plurality of oscillating signals having different phases, a combining unit which combines the plurality of oscillating signals respectively with a radio frequency (RF) signal and outputs a plurality of composite signals. | 08-27-2009 |
| 20100227577 | APPARATUS AND METHOD FOR IMPROVING LINEARITY OF TRANSMITTER - Improvement of linearity of a transmitter is provided, by a transmission method that includes, when receiving a transmit signal, generating, at a modulation signal generator, a modulation signal modulated from the transmit signal, an average output level and an amplitude with respect to the modulation signal; receiving, at a Read Only Memory (ROM), the average output level and generating a peak amplitude; and generating, at an amplitude shaper, a gain value using the peak amplitude and the amplitude and generating magnitude information by adding an offset value. | 09-09-2010 |
