发明名称 |
EDGE POWER RAMP USING LOGARITHMIC RESISTOR ATTENUATOR |
摘要 |
<p>A power ramping circuit for use in the transmit path of a radio frequency (RF) circuit. The power ramping circuit includes parallel connected transistors used as logarithmic resistor attenuators for adjusting current to a mixer circuit in the transmit path. The parallel connected transistors can be sized differently, and are sequentially turned off to gradually increase the current provided to the mixer circuit. A ramp control circuit controls the parallel connected transistors in response to either an analog signal or a digital signal.</p> |
申请公布号 |
EP2102990(A1) |
申请公布日期 |
2009.09.23 |
申请号 |
EP20070855600 |
申请日期 |
2007.12.20 |
申请人 |
ICERA CANADA ULC |
发明人 |
HOLDEN, ALAN R.;SAFIRI, HAMID R.;FRECHETTE, MICHEL J.G.J.P.;EMBABI, SHERIF H.K.;BELLAOUAR, ABDELLATIF;DEVISON, STEPHEN ARNOLD;MANKU, TAJINDER |
分类号 |
H04B1/04;(IPC1-7):H04Q7/32 |
主分类号 |
H04B1/04 |
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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