Cellular phones have traditionally used superheterodyne receivers and transmitters. However, as demand for multimode terminals that include multiple standards (GSM, cdma2000, and W-CDMA) has grown, di
I soldered a circuit according to the circuit diagram of ad9834 datasheet, but after writing the program, it produces a wave, but the difference is too big. The program is fine.
Testing of the company's products.
Vin is the input voltage, which is required to be between 1.8 and 2.4V. I designed a circuit
If it is not within the range, call the police. This is my first time wr
I want to use the API program to obtain the network type that the current mobile phone is connected to, such as GPRS, edwg, 3G, CDMA, etc.? ? Thank you
Above is my FPGA reset schematic.
POR connected to FPGA
DSP_POR is connected to the DM6467 processor
PHY_RESET_N is connected to the network chip
We disconnected the R12 resistor.
I started the develo
Haha, I designed a laboratory video surveillance system. When I watched it at the end, I found that I could see the video image when I watched it with techview.exe on the host computer, but when I ent