A.晶體與晶振不同 B.晶體與晶振相同 C.晶體與晶振通常與射頻共同振蕩產(chǎn)生主時(shí)鐘信號(hào) D.晶體可獨(dú)立產(chǎn)生主時(shí)鐘信號(hào)
A.13MHz B.26MHz C.19.5MHz D.19.68MHz
A.對(duì)接收的信號(hào)進(jìn)行功率放大 B.對(duì)音頻信號(hào)進(jìn)行功率放大 C.對(duì)IQ信號(hào)進(jìn)行功率放大 D.對(duì)發(fā)射信號(hào)進(jìn)行功率放大