发明名称 |
System and method for reducing effects of switched capacitor kickback noise |
摘要 |
A circuit includes a first input terminal, a first transmission line, a first sampling switch coupled to the first input terminal through the first transmission line, a first sampling capacitor coupled to the sampling switch, and a first open-circuit quarter wavelength stub coupled to the first transmission line, the first open-circuit quarter wavelength stub configured to reduce kickback noise on the first transmission line. A method for reducing kickback noise in a circuit includes determining a frequency associated with a kickback noise on a first transmission line of the circuit, the circuit having an input terminal coupled to the first transmission line, configuring a length of an open-circuit quarter wavelength stub to correspond to the determined frequency, and coupling the open-circuit quarter wavelength stub to the first transmission line to filter the frequency associated with the kickback noise. |
申请公布号 |
US9312586(B2) |
申请公布日期 |
2016.04.12 |
申请号 |
US201213675780 |
申请日期 |
2012.11.13 |
申请人 |
XILINX, INC. |
发明人 |
Lowney Donnacha;Cullen Edward |
分类号 |
H03H7/38;H01P1/20;H04B3/20;G11C27/02;H03H7/01 |
主分类号 |
H03H7/38 |
代理机构 |
|
代理人 |
Chan Gerald |
主权项 |
1. A circuit, comprising:
a first input terminal; a first transmission line; a first sampling switch coupled to the first input terminal through the first transmission line; a first sampling capacitor coupled to the sampling switch; and a first open-circuit quarter wavelength stub coupled to the first transmission line, the first open-circuit quarter wavelength stub configured to reduce kickback noise on the first transmission line, wherein a length of the first open-circuit quarter wavelength stub is tuned to a first frequency associated with the kickback noise on the first transmission line. |
地址 |
San Jose CA US |