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CC2530+CC2591传输线阻抗匹配的问题

Other Parts Discussed in Thread: CC2591, CC2530, CC2592

请教一下:

1、在CC2530和CC2591之间,是一个巴伦电路,这个作用是什么?

2、在CC2530和CC2591之间的传输线是否需要阻抗匹配,如果需要,是差分线匹配么?

3、在CC2591和天线之间的电路是匹配么?传输线是否也需要阻抗匹配?