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两层板cc2530+cc2591功率出不来???

Other Parts Discussed in Thread: CC2591, CC2530

目前做了两套板子,基于cc2530+cc2591测试结果不理想,想请教下如何改进两层板的设计.

板子1、板厚为1.2mm

 板子2、板厚为0.9mm

基本的器件参数都按CC2530_CC2591_EM_Schematic.pdf中的做。

测出来的情况如下表格,这里C113、L112对发射功率的影响很大。

TXPOWER

实测1[dBm]

实测3[dBm]

 

官网对比[dBm]

 

不去C113,L112

只去掉C113,L112

 

 

0XF5

7.83

 

14.26

 

 

0xE5

7.34

 

13.42

 

20

0xD5

6.45

 

12.35

 

19

0xC5

5.46

 

11.37

 

18

0xB5

4.38

 

10.29

 

17

0xA5

3.22

 

8.74

 

16

0x95

1.34

 

7.02

 

14.5

0x85

0.20

 

5.79

 

13

0x75

-1.38

 

4.25

 

11.5

0x65

 

 

 

 

10