发明授权
- 专利标题: Three port structure with modulated LO signal
- 专利标题(中): 具有调制LO信号的三端口结构
-
申请号: US09672643申请日: 2000-09-28
-
公开(公告)号: US06748203B1公开(公告)日: 2004-06-08
- 发明人: Veselin Brankovic , Dragan Krupezevic , Gerald Oberschmidt , Tino Konschak , Thomas Dölle , Hamid Amir-Alikhani , Masayoshi Abe
- 申请人: Veselin Brankovic , Dragan Krupezevic , Gerald Oberschmidt , Tino Konschak , Thomas Dölle , Hamid Amir-Alikhani , Masayoshi Abe
- 优先权: EP99119326 19990929
- 主分类号: H04B106
- IPC分类号: H04B106
摘要:
A three port structure for the down conversion demodulation of a digitally modulated RF signal is proposed, wherein no RF switches are provided. The three port structure (1) has a first input (2) for the RF signal to be down converted and a second input (3) for a RF signal originating from a local oscillator (8). An output (4) of the three port structure (1) is supplied to a power sensor unit (5). The RF signal from the local oscillator (8) is modulated (7) before it is supplied to the three port structure (1).