Roy, G.M.Dwari, S.Kumar Kanaujia, B.K.Kumar, S.Song, H.2026-02-052021IET Microwaves, Antennas and Propagation, 2021, 15, 6, pp. 537-54617518725https://doi.org/10.1049/mia2.12062https://idr.nitk.ac.in/handle/123456789/23229This study presents integration of complementary CMOS active feedback low noise amplifier with coplanar waveguide fed patch antenna for Wi-Fi networks. The LNA design-I, involves a cascode amplifier followed by active feedback common source amplifier offering wideband impedance matching with lowered parasitic losses. The inductor-less feedback mechanism is used to nullify noise effect with extended bandwidth in the range of 2.2 to 5.8 GHz and a peak forward gain of 22.5 dB. It is implemented on agilent's advance design system using 45 nm CMOS process. The noise figure (NF) is approximately 2 dB while the stability factors µ and µ prime are well above 1 dB with IIP3 of about 15 dBm. The chip area is 0.57 x 0.57 mm2 under dc power supply of 1V while power consumption of 0.8 mW. A CPW fed antenna design-II, achieves a wide band response similar to the bandwidth of LNA. The size of the fabricated antenna is calculated as 40 x 40 mm2. The peak gain is approximately 4.1 dBi at 3.9 GHz. The codesign-III, proposes a receiver achieving a much wider band of 1.6 to 6 GHz with a gain of 16.5 dB and NF of 2.59 dB at 2.06 GHz. The codesign improves the system integration by reducing overall chip area and offers saving in the effective cost. © 2021 The Authors. IET Microwaves, Antennas & Propagation published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology.Antenna feedersBandwidthCascode amplifiersCMOS integrated circuitsCoplanar waveguidesFeedbackFeedback amplifiersImpedance matching (electric)Integrated circuit designMicrostrip antennasMicrowave antennasNoise figureSlot antennasWi-FiWireless local area networks (WLAN)Advance design systemCommon source amplifierCoplanar waveguide fedCoplanar waveguide fed antennasDC power suppliesFeedback mechanismsSystem integrationWideband impedance matchingLow noise amplifiers