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0.13-πœ‡π‘š cmos lna layout design for cognitive radios using current reuse technique with resistive feedback

0.13-πœ‡π‘š cmos lna layout design for cognitive radios using current reuse technique with resistive feedback / Asnawi Nor Azizan
Pada masa ini, kehadiran pelbagai jenis aplikasi radio dalam sistem komunikasi telah membawa kepada penyelidikan dalam bidang radio kognitif disebabkan oleh keupayaan radio ini untuk menala kepada pelbagai piawaian. Penguat hingar rendah (LNA) pula merupakan salah satu komponen terpenting dalam penerima RF yang memberi kesan ketara pada prestasi keseluruhan penerima. Tesis ini adalah mengenai rekabentuk LNA untuk aplikasi radio kognitif. Asas pengukuran prestasi LNA kognitif ini adalah melalui pencapaian semua metrik prestasi LNA. Julat frekuensi operasi LNA yang direka bentuk adalah dari 588 MHz ke 7GHz. Aplikasi dalam julat frekuensi ini adalah, seperti penyiaran TV, GPS, ketuhar gelombang mikro, radar cuaca, dan lain-lain yang kebanyakan berada di dalam jalur UHF dan SHF. Reka bentuk kognitif LNA menggunakan SilTerra's 0.13ΞΌm proses teknologi adalah simulasi pra-bentangan menggunakan Cadence SpectreRF dan simulasi pasca bentangan menggunakan Calibre Mentor Graphic. Hasil simulasi pasca bentangan reka bentuk LNA ini berupaya mencapai gandaan kuasa minimum 8.6dB dan gandaan kuasa maksimum 20dB sepanjang julat frekuensi yang dinyatakan. Angka hingar (NF) adalah antara 3.8dB hingga 5.2dB. NF mestilah agak rendah untuk memastikan LNA kognitif tidak meninggikan bunyi bising lebih daripada isyarat yang dikehendaki. Dalam frekuensi operasi yang sama, |𝑆11| dan |𝑆22| mendapat lebih daripada 10dB. Penggunaan kuasa dalam kerja ini adalah 11.4mW pada 9.5mA arus operasi. Daripada simulasi pre-bentangan, faktor kestabilan, Kf adalah lebih daripada 7. Titik mampatan masukan 1dB, P1dB yang diperolehi adalah -15.23dBm, manakala titik intermodulasi tertib ketiga masukan, IIP3 mencapai -7.11dBm. Terbukti bahawa teknik guna semula arus dengan suapbalik rintangan berupaya mencapai semua metrik prestasi mengikut spesifikasi. _______________________________________________________________________________________________________ Nowadays, the presence of numerous radio applications in the communication system has led to research on cognitive radio due to its capability in tuning to multistandard operation. Meanwhile, the Low Noise Amplifier (LNA) is one of the most important component in the RF receiver which gives the significant impact on the receivers overall performance. This thesis is on the design of LNA for cognitive radio applications. The basis of measuring the effectiveness of the cognitive LNA is via the achievement of its performance metrics. The frequency range of operation of the designed LNA is from 588 MHz to 7GHz. The applications that are operating in this range of frequency are such as TV Broadcasting, GPS, microwaves and weather radar, which are mostly in the UHF and SHF bands. The design of the cognitive LNA was in SilTerra’s 0.13ΞΌm process technology pre-layout simulated using Cadence SpectreRF while the post-layout simulated using Calibre Mentor Graphic. From the post-layout simulation, the designed LNA obtained minimum power gain, |𝑆21| of 8.6dB and a maximum power gain of 20dB in the mentioned range of frequency operation. NF is ranging from 3.8dB to 5.2dB for the same frequency range. NF must be relatively low to ensure the cognitive LNA does not amplify the noise, but amplifies only the desired signal. |𝑆11| and |𝑆22| obtained are more than 10dB, while |𝑆12| is more than 25dB. The power consumption of the LNA is 11.4mW at an operating current 9.5mA. From the pre-layout simulation, stability factor, Kf is more than 7. Input 1dB compression point, IP1dB obtained is -15.2dBm. For the input 3rd order intermodulation intercept point, IIP3, the LNA achieved -7.11dBm. The current-reuse technique with resistive feedback topology prove to be able to achieve low power consumption and fulfil all the performance metrics set by the specification throughout the frequency range of operation.
Contributor(s):
Asnawi Nor Azizan - Author
Primary Item Type:
Final Year Project
Identifiers:
Accession Number : 875005795
Language:
English
Subject Keywords:
radio; communication; (LNA)
First presented to the public:
6/1/2015
Original Publication Date:
3/7/2019
Previously Published By:
Universiti Sains Malaysia
Place Of Publication:
School of Electrical & Electronic Engineering
Citation:
Extents:
Number of Pages - 91
License Grantor / Date Granted:
  / ( View License )
Date Deposited
2019-03-07 12:53:10.52
Date Last Updated
2020-10-31 21:29:21.501
Submitter:
Mohd Jasnizam Mohd Salleh

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