发明授权
- 专利标题: Pulse transmission transmitter including a higher order time derivate filter
- 专利标题(中): 脉冲发射发射机包括较高阶导数滤波器
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申请号: US10082773申请日: 2002-02-25
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公开(公告)号: US06625229B2公开(公告)日: 2003-09-23
- 发明人: William B. Dress, Jr. , Stephen F. Smith
- 申请人: William B. Dress, Jr. , Stephen F. Smith
- 主分类号: H04L2704
- IPC分类号: H04L2704
摘要:
Systems and methods for pulse-transmission low-power communication modes are disclosed. A pulse transmission transmitter includes: a clock; a pseudorandom polynomial generator coupled to the clock, the pseudorandom polynomial generator having a polynomial load input; an exclusive-OR gate coupled to the pseudorandom polynomial generator, the exclusive-OR gate having a serial data input; a programmable delay circuit coupled to both the clock and the exclusive-OR gate; a pulse generator coupled to the programmable delay circuit; and a higher order time derivative filter coupled to the pulse generator. The systems and methods significantly reduce lower-frequency emissions from pulse transmission spread-spectrum communication modes, which reduces potentially harmful interference to existing radio frequency services and users and also simultaneously permit transmission of multiple data bits by utilizing specific pulse shapes.
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