In the circuit design, unit current source arrays and digital synchronizing cells are used to improve the matching and dynamic range of DAC.
电路设计中使用单位电流源阵列和数字同步控制单元来提高电流源的匹配性和动态范围；
Signal integrity theory is gaining increasing attention in high speed digital circuit design impedance matching plays an important role.
信号完整性理论在高速数字电路设计中日益被重视，阻抗匹配在信号完整性理论中占有重要地位。
The main process includes following: analysis of device model, design mixing circuit, impedance matching.
主要步骤包括：器件的射频等效模型分析、混频电路设计与优化、混频电路的阻抗匹配。
Existing wideband matching technologies have to frequently adjust circuit parameter to trade-off between impedance matching and noise matching. This makes the design complex.
现有的宽带匹配技术需要反复协调电路参数，在阻抗匹配和噪声匹配之间折衷，给设计增大了难度。
In practical applications, due to impairment of the device and the circuit design structure, it is difficulty to achieve the accurate gain and phase matching required between the two paths.
而在实际应用中，由于器件工艺和电路设计结构的非理想性，两支路间必然会存在不匹配现象。
In practical applications, due to impairment of the device and the circuit design structure, it is difficulty to achieve the accurate gain and phase matching required between the two paths.
而在实际应用中，由于器件工艺和电路设计结构的非理想性，两支路间必然会存在不匹配现象。
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