发明名称 |
RF MODULATOR WITH NARROW BAND PASS FILTER |
摘要 |
Disclosed herein is RF modulator with a narrow bandpass filter. The RF modulator for modulating video and audio signals into RF signals corresponding to a frequency band of a predetermined channel includes an oscillation unit for generating a predetermined RF signal suitable for the frequency band of the predetermined channel; a mixer for modulating the video and audio signals using the RF signal generated from the oscillation unit; and a narrow bandpass filter for receiving an RF-modulated signal from the mixer, and passing only a signal of the frequency band of the predetermined channel from among the RF-modulated signal. Therefore, the RF modulator can remove or block unnecessary components such as lower side band and harmonic-frequency signals generated after video and audio signals have been RF-modulated, such that it can prevent interference between channels from being generated, resulting in the creation of more excellent video and audio signals. |
申请公布号 |
KR20050087582(A) |
申请公布日期 |
2005.08.31 |
申请号 |
KR20040013478 |
申请日期 |
2004.02.27 |
申请人 |
SAMSUNG ELECTRO-MECHANICS CO., LTD. |
发明人 |
RYU, JONG GI;KIM, DUCK WHAN;MOON, DONG TAEK;LEE, DAE YOO;JEON, KYU O |
分类号 |
H04N5/38;H04B1/18;H04N5/208;H04N5/40;H04N7/04 |
主分类号 |
H04N5/38 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|