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发表于 2009-7-17 16:06:23
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【16楼】 ywdjob
更新昨天测试灵敏度,
There are two boards form Dragon,the test results as below:
1#:Tx power =18.36dBm(433MHz,3.6V).Harmonics is too big,3rd=-23.7dBm,4th=-26.7dBm,5th=-13.7dBm,6th=-23.1dBm,7th=-21dBm,8th=-32dBm;
Sensitivity=-113dBm(after removed C16,DR=5kbps,Dev=2.5kHz,433MHz),SWR=1.73@433MHz.
2#:Tx power =17.6dBm(433MHz,3.6V).Harmonics is too big,3rd=-25.7dBm,4th=-31dBm,5th=-15dBm,6th=-24.2dBm,7th=-21dBm,8th=-34.7dBm,9th=-29.5dBm;
Sensitivity=-114dBm(after removed C16,DR=5kbps,Dev=2.5kHz,433MHz),SWR=1.65@433MHz.
RX test scripts:
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看到你的谐波结果了吧!!很厉害的了 3次谐波都这么厉害呢,2次可能更加厉害, si出来新版的电路针对这个谐波的,但会影响到功率的了 |
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