发明名称 |
Multi-level mixer architecture for direct conversion of FSK signals |
摘要 |
A multi-level quadrature (I/Q) mixer for use in a communication system such as a paging device, where the mixer includes first and second I/Q downconversions followed by demodulation. The first I/Q downconversion converts an I/Q signal pair to a first IF, and the second I/Q downconversion converts an I/Q signal pair to a second IF. The first IF may or may not be the center frequency depending on the number of subchannels in the single channel being downconverted.
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申请公布号 |
US6018553(A) |
申请公布日期 |
2000.01.25 |
申请号 |
US19960715442 |
申请日期 |
1996.09.18 |
申请人 |
WIRELESS ACCESS |
发明人 |
SANIELEVICI, SERGIO A.;LLOYD, STEPHEN F.;CIOFFI, KENNETH R. |
分类号 |
H03D3/00;H03D7/16;H03D7/18;H04L27/152;(IPC1-7):H03D3/00;H04L27/14 |
主分类号 |
H03D3/00 |
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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