发明公开
- 专利标题： Frequency translation filter apparatus and method
- 专利标题（中）： 不经意的人
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申请号： EP11154194.2申请日： 2011-02-11
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公开(公告)号： EP2487787A1公开(公告)日： 2012-08-15
- 发明人: Sundström, Lars , Mattisson, Sven
- 申请人： Telefonaktiebolaget L M Ericsson (PUBL)
- 申请人地址： S-164 83 Stockholm SE
- 专利权人： Telefonaktiebolaget L M Ericsson (PUBL)
- 当前专利权人： Telefonaktiebolaget L M Ericsson (PUBL)
- 当前专利权人地址： S-164 83 Stockholm SE
- 代理机构： Rees, Simon John Lewis
- 主分类号： H03D7/16
- IPC分类号： H03D7/16
摘要：
A frequency translation filter 500 is configured to receive a radio frequency (RF) signal 501 comprising first and second non-contiguous carriers or non-contiguous frequency ranges. The frequency translation filter comprises a mixer 503 configured to mix the RF signal 501 received on a first input with a local oscillator (LO) signal 505 received on a second input. A filter 507 has band-pass characteristics which, when frequency translated using the mixer 503, contain first and second pass-bands corresponding to the first and second non-contiguous carriers or non-contiguous frequency ranges. The first and second pass-bands are centered about the local oscillator frequency.
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