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"ABSTRAKTo support the WiMAX infrastructure development in Indonesiaa dualband2.3/3.3 GHz low noise amplifier (LNA) is designed and analyzed. The LNAis designed by combining the inductive source degeneration architecture and theproposed switchable inductor for controlling gain. The chipis implemented byTSMC 0.18-μm CMOS technology.First of all, the mathematical analysis of the proposed LNA architecture isconducted. It includesinput-impedance, gain and noise figure analysis. Theproposed input-impedance analysis modifies the input impedance of the inductivesource degeneration LNA architecture, includes devices selection to fulfill S11requirement. Furthermore, the gain analysis is performed to explain the proposedswitchable inductor structure for controlling gain. It shows that combining onchipinductor paralleled with series bond-wire and on-board inductor will obtain aflatter gain for two bands of interest. The noise figure for source inductivedegeneration LNA architecture is derived. The noise figure described by thederived equations agrees well with that obtained from the simulation.Secondly, the proposed dual-band 2.3/3.3 GHz LNA is simulated. At lowbandmode, simulated results show the maximum S21 of 18.69 dB, an S11 below -29 dB, and a flat noise figure of 2.3 ~ 2.33 dB from 2.3 to 2.4 GHz. The LNApresents the IIP3 and the P1dB of -12.1 dBm and -23.3 dBm, respectively, whileconsuming 18.4 mW at 1.5 V power supply. At high-band mode, the simulationresults show the S21 of 17.01 ~ 17.48 dB, the S11 below -21 dB, and an flat noisefigure of 2.36 ~ 2.37 dB from 3.3 to 3.4 GHz. The LNA consumes only 12.9 mWat high-band mode, while exhibiting the IIP3 and the P1dB of -11.3 dBm and -22.1dBm, respectively.And then, the proposed LNA is verified by the post-simulation in whichthe bond-wire effects are considered for an on-board deployment. At low-bandmode, the post-simulation results show the S11 of -29.11 dB ~ -32 dB, the S21 of17.18 ~ 17.42 dB, and the flat noise figure of 2.67 ~ 2.71 dB. The LNA exhibitsthe IIP3 and P1dB of -13.4 dBm and -24.2 dBm respectively, while consuming16.32 mW power. At high-band mode, the LNA exhibits the S21 of 15.5 ~ 15.88dB, the S11 of -12.94 ~ -16.82 dB, and the flat noise figure of 2.52 ~ 2.54 dB whileconsuming 11.75 mW. The IIP3 and P1dB for the high-band mode are -12.3 dBmand 23.3 dBm, respectively. The total chip area ofthe proposed LNA is 0.9 mm2,including the IO pads."

"ABSTRAKUntuk meningkatkan efisiensi sekaligus mendukung perkembangan berbagai jenis standar komunikasi nirkabel seperti maka diperlukan sebuah transceivers yang mampu beroperasi pada multiband dengan multistandar. Salah satu bagian multiband transceivers adalah low noise amplifier (LNA) yang mampu beroperasi pada beberapa frekuensi yang berbeda dengan nilai return loss (S11), Gain (S21),stability (K), noise figure (NF), dan VSWR yang baik pada semua frekuensi. Pada penelitian ini diusulkan penggunaan multisection impedance transformer (MIT)sebagai impedance matching, penggunaan MIT memiliki keunggulan diantaranya stability yang lebih tinggi dengan noise yang lebih rendah dibandingkan dengan komponen lumped. Selain itu penggunaan MIT lebih mudah dalam proses pabrikasi dan pengukuran. Tujuan perancangan ini untuk mendapatkan LNAmultiband pada 0,9 GHz untuk aplikasi GSM, 1,8 GHz untuk WCDMA, dan 2,6 GHz untuk LTE. Kinerja LNA pada frekuensi 0,95 GHz untuk GSM diantaranya memiliki nilai return loss S11 = -23,541 dB, insertion loss S21 = 18,911 dB, stability K = 1,462, NF = 1,475 dB, VSWR = 1,143 dB, dan FoM sebesar 8,38. Sementara itu, kinerja LNA pada frekuensi 1,85 GHz untuk WCDMA diantaranya memiliki nilai return loss S11 = -23,771 dB, insertion loss S21 = 12,858 dB, stability K = 1,997, NF = 1,988 dB, VSWR = 1,139 dB, dan FoM sebesar 2,616.Kinerja LNA pada frekuensi 2,65 GHz untuk LTE diantaranya memiliki nilai return loss S11 = -23,521 dB, insertion loss S21 = 10,180 dB, stability K = 1,849, NF = 2,776 dB, VSWR = 1,143 dB, dan FoM sebesar 1,152.

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AbstractA transceivers capable operating on a multiband with multistandar is needed to improve efficiency for support the development different types of wireless communication standards. A part multiband transceivers are low noise amplifier (LNA) capable to operate at several different frequencies with a value of returnloss (S11), Gain (S21), stability (K), noise figure (NF), and VSWR are good at all frequencies. This study proposed used multisection impedance transformer (MIT) as an impedance matching, MIT has advantages higher stability with lower noise compared with lumped components. Besides that, MIT easier in the manufacturing process and measurement. Design goal are to get a multiband LNA at 0.9 GHz for GSM applications, 1.8 GHz for WCDMA, and 2.6 GHz for LTE.Performance at a frequency of 0.95 GHz LNA for GSM them has a value of return loss S11 = -23.541 dB, insertion loss S21 = 18.911 dB, stability K = 1.462, NF = 1.475 dB, VSWR = 1.143 dB, and the FOM of 8.38. Meanwhile, the performance at a frequency of 1.85 GHz LNA for WCDMA which have the value of return loss S11 = -23.771 dB, insertion loss S21 = 12.858 dB, stability K = 1.997, NF = 1.988 dB, VSWR = 1.139 dB, and the FOM of 2.616. LNA performance at a frequency of 2.65 GHz for the LTE value of which has a return loss S11 = -23.521 dB, insertion loss S21 = 10.180 dB, stability K = 1.849, NF =2.776 dB, VSWR = 1.143 dB, and the FOM of 1.152"

"Saat ini, implan telah banyak dikembangkan dalam dunia kesehatan, seperti implan koklea, prostesis retina, implan alat pacu jantung dll. Low noise amplifier (LNA) adalah salah satu rangkaian utama pada rangkaian penerima sistem transfer daya nirkabel untuk aplikasi implan medis yang berfungsi untuk mengamplifikasi sinyal keluaran dari antena penerima. Dalam penelitian ini, dirancang suatu rangkaian penerima berdaya dan berderau rendah dengan frekuensi kerja 13,56 MHz. Menggunakan tiga blok rangkaian, yaitu LNA, penyearah, dan filter, rangkaian penerima ini didesain untuk mengamplifikasi daya sekaligus menyearahkannya. Dari hasil simulasi, rangkain penerima yang didesain memiliki penguatan (S21) sebesar 43dB, noise figure 1,179dB, dan daya yang dibutuhkan sebesar 0,987 mW. Rangkaian ini telah diimplementasikan dalam sebuah PCB dalam ukuran 85,1 mm x 32,6 mm dan diuji parameter-parameternya.

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Nowadays, implant has been developed a lot in medical field, such as cochlear implant, retinal prostheses, pacemaker implant, etc. Low noise amplifier (LNA) is a main circuit of wireless power transfer system receiver, which has a function to amplify output signal from receiver antenna. In this thesis, a low-noise low-power 13,56 MHz receiver had been designed. Using three circuit blocks: LNA, rectifier, and filter, this receiver was designed to do amplification and rectification as well. From simulation, this receiver got amplification gain (S21) 43dB, noise figure 1.179dB, and power consumption 0.987mW. The receiver was implemented in 85.1 mm x 32.6 mm PCB and had been tested for its parameters."