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Title: Performance of ultra-wide band DCBLNA with suspended strip line radiator for human breast cancer diagnosis medical imaging application
Authors: Roy G.M.
Kanaujia B.K.
Dwari S.
Kumar S.
Song H.
Issue Date: 2020
Citation: IET Circuits, Devices and Systems Vol. 14 , 8 , p. 1228 - 1234
Abstract: This study presents the performance of differential cascode balun low noise amplifier (DCBLNA) with ultra-wideband (UWB) for human breast cancer diagnosis. The proposed DCBLNA design-I with bulky spiral inductors achieves insufficient bandwidth with large power consumption of 10.8 mW. To attain the proper UWB band of operation, suspended strip line (SSLIN) radiators have employed in the proposed design-I. The performance of SSLIN is evaluated in terms of line capacitance and characteristic impedance by optimising its width. It is observed that best 50 Ωn-II. DCBLNA design-II using SSLIN have achieving a desired band of operation ranging from 1.5 to 15.7 GHz and best NF of 0.5 dB. The gain and phase imperfections are simulated to characterise balun networks. The smallest gain imperfection achieved is 0.1 dB at 10 GHz while the simulated phase imperfection turns out to be sufficiently good with 2.35° at 8 GHz. The proposed DCBLNA design-II is implemented and fabricated using RFCMOS 45 nm Taiwan Semiconductor Manufacturing Company (TSMC) process under commercial conditions. The highest figure of merit comes out to be 3.2 that ensures good accuracy of medical imaging for breast cancer diagnosis. © The Institution of Engineering and Technology 2020.
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