Abstract
A 0.7 dB (min.) low noise figure PHEMT LNA at 5.8 GHz using an inductive drain feedback that is applicable to the WiMAX 802.16 standard. The amplifier uses FHX76LP superHEMT low noise FET. The Ansoft Designer was used during the design process. The low noise amplifier (LNA) produced the forward transfer gain (S21) of 43.74 dB. The return loss (S12), input reflection (S11) and output reflection (S22) are -52.41 dB, -10.60 dB, -18.22 dB respectively. The measured 3dB bandwidth of 1.24 GHz has been achieved. The input sensitivity is -80 dBm compliant the standards required by IEEE 802.16.
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