发明名称 |
RICEVITORE A LARGHEZZA DI BANDA ADATTATIVA |
摘要 |
The receiver includes a superheterodyne section converting a received frequency modulated signal to a fixed intermediate frequency signal. The IF signal is then filtered and further filtered to produce respective wideband and narrowband signals. These are demodulated by a frequency discriminator. Pref. the narrowband filtering is done by an FIR filter whose bandwidth is varied as a function of adjacent channel interference levels. Pref. frequency discrimination and the narrow band filtering are implemented in a digital signal processor receiving digitised vector components of the wideband filtered IF signal. |
申请公布号 |
IT1271255(B) |
申请公布日期 |
1997.05.27 |
申请号 |
IT1994MI02079 |
申请日期 |
1994.10.12 |
申请人 |
ERICSSON GE MOBILE COMMUNICATIONS INC. |
发明人 |
DENT PAUL W. |
分类号 |
H04B1/26;H03G5/24;H04B1/10;H04B1/16;H04B1/40;(IPC1-7):H04B;H04M |
主分类号 |
H04B1/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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