| 摘要 |
<p>Disclosed herein is a local wireless signal transmitting/receiving apparatus and method using digital RF processing technology. When the local wireless signal transmitting/receiving apparatus generates a local wireless signal to be transmitted, spreads the frequency of the generated local wireless signal and thereby generates a baseband signal, the local wireless signal transmitting/receiving apparatus converts the baseband signal of the local wireless signal into phase information, converts the phase information into an RF signal by means of a polar modulator, and transmits the RF signal. Also, when the local wireless signal transmitting/receiving apparatus receives an external RF signal, the local wireless signal transmitting/receiving apparatus detects an IF signal, detects a zero-crossing signal from the detected IF signal, then converts the detected zero-crossing signal into a digital signal, converts the digital signal into a local wireless signal which is processable signal, and processes the local wireless signal. Accordingly, AD/DA converters are replaced with a polar modulator and a ZXD, thus making it possible to implement a low-power design for a local wireless signal transmitting/receiving apparatus, to reduce chip size and to save costs.</p> |
