F flemmard New Member Mar 6, 2008 #1 Hi guys, Can you tell me about the Transmitter Receiver Module that is present in our mobile phones? Thanks.
Hi guys, Can you tell me about the Transmitter Receiver Module that is present in our mobile phones? Thanks.
MohammadMasoud New Member Mar 7, 2008 #2 look at GSM concepts & see the concepts of DTMF in telephone to be familiar in JAWWAL or mobile system .
look at GSM concepts & see the concepts of DTMF in telephone to be familiar in JAWWAL or mobile system .
RadioRon Well-Known Member Mar 7, 2008 #3 here is a simplified diagram of the rf circuits https://pdfserv.maxim-ic.com/en/an/AN2233.pdf