This paper deals with the development of block up converter design for Ku band. The input of the block up converter, which is −17 dBm L band (950 – 1700 MHz) input signal will be conditioned and converted to 36 dBm Ku band (13.75 – 14.50 GHz) signal. This block up converter uses novel thermal compensation approach using power detector on the output to detect the signal output and compensate it using variable controlled attenuator that is controlled with Teensy 3.5. From the experimental result, it shows the realized design can output 34.14 dBm average power output and 42.33 dBm maximum power output on Ku band (13.75 – 14.50 GHz) with gain flatness of 0.546 dB and maximum VSWR of 1.727.
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