发明名称 |
Intermediate frequency planning in radio transmitters and receivers |
摘要 |
A method of intermediate frequency (i.f.) planning for radio transmitters and receivers involves predicting which i.f. or i.f. range will result in spurious emissions to or response from one or more "avoidance bands" being sources of unwanted signals or frequency bands closed to transmission, whereby to choose an i.f. or i.f. band which minimises such i.f. bands. The method may be carried out by computer software which may be embedded in a transmitter/receiver having means for varying its i.f.
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申请公布号 |
US2003032398(A1) |
申请公布日期 |
2003.02.13 |
申请号 |
US20020072941 |
申请日期 |
2002.02.12 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
HARRIS ROBERT MICHAEL |
分类号 |
H03D7/16;H03J1/00;H03J5/24;(IPC1-7):H04B1/00 |
主分类号 |
H03D7/16 |
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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