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CC1110 Tuning Balun I am planning to make a product with CC1110 working at both 915 and 868Mhz.
The balun is refering to the newest cc1110EM 868-915 4.0 design.
However due to the tight board space, I cannot 100% follow the layout suggested by the TI board. Also I have to use 4 layer board, the substrate thickness will not be 0.8mm anymore. I will still try to keep the electrical length of the differential balun identical. So I will have to design the BALUN with ADS. The antenna port of my PCB is an SMA port.
My question is If I have only a Spectrum analyzer and a Network analyzer, is it possible to check whether the balun is matching properly . I am still new to using network analyzer. Can I just turn the CC1110 to 10dB output and feed the signal to the network analyzer's port and see the S param? If not. how can I know it is a matching? Regards, Tony
Никто на этот вопрос так и не ответил. Может ктонибудь проводил измерение импеданса диф. выходов подобных трансиверов от тексас инструмент (чипкона) , как узнать что балун согласован правильно? Можно ли при работающем выходном каскаде прередатчика микросхемы на ур-не +10дбм проверить его вых. импеданс при помощи нетворк анализатора?
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