发明名称 MODULATION OF AN RF TRANSMIT SIGNAL
摘要 Techniques for reducing interference among transceivers are disclosed. A transistor generates a radio frequency transmit signal in response to a generated pulse. The pulse is generated when transitions are detected in a clock signal. The clock signal is produced by an oscillator block which includes a ceramic resonator configured as a clock source. When interference is detected, the pulse applied to the transistor is varied. The frequency of the transmit signal is optionally modulated by varying the temperature of a resonator element. To vary this temperature, the current flowing through one or more resistive elements positioned in proximity of the resonator element is varied according to a control signal. As the level of this current flow varies, the amount of heat emitted by the resistive elements varies, thereby changing the temperature of the resonator element which has a relatively high temperature sensitivity.
申请公布号 WO2007121116(A2) 申请公布日期 2007.10.25
申请号 WO2007US66104 申请日期 2007.04.05
申请人 PRECO ELECTRONICS, INC.;HAYDEN, DOUGLAS TODD 发明人 HAYDEN, DOUGLAS TODD
分类号 H03C3/00 主分类号 H03C3/00
代理机构 代理人
主权项
地址