The ESP Offline Programmer is an ESP32 board with a microSD card slot designed to flash the firmware to other ESP32 or ESP8266 modules without a PC.
Test screen display color , red , green , blue , white , yellow . USE SPI 3-Line Serial Interface .
These are schematics and testbench of a Ka-Band PA published by Z. Liu, L. Wang, H. Fallah, Z. Chen and C. P. Yue, in "A Compact 28-GHz Transmitter Front-End with Co-Optimized Wideband Chip-Antenna ...
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