Realisasi LNA Dua Tingkat dengan Teknik Penyesuai Impedansi Trafo λ/4 dan Lumped Element untuk DVB-T2

ASEP KARYANA, YUYUN SITI ROHMAH, BUDI PRASETYA

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ABSTRAK

Digital Video Broadcasting-Second Generation Terrestrial (DVB-T2) merupakan standar internasional yang menaungi pemberlakuan televisi digital saat ini. Pada konfigurasi DVB-T2 terdapat perangkat penerima sinyal di sisi pelanggan. Permasalahan yang sering dijumpai adalah lemahnya daya sinyal yang diterima. Oleh sebab itu, dibutuhkan penguat daya pada sistem penerima, yaitu Low Noise Amplifier (LNA) yang diletakkan setelah antena penerima. Pada penelitian ini, direalisasikan LNA menggunakan transistor BJT BFR96 dengan target desain dualstage, matching impedance Trafo λ/4 pada sisi input dan output, serta lumped element untuk penyepadanan impedansi antar tingkat. LNA direalisasikan untuk bekerja optimal pada frekuensi 630 MHz. Nilai Gain dan Noise Figure (NF) yang diperoleh berturut-turut, yaitu 12.96 dB dan 4.05 dB. Selain itu, nilai Voltage Standing Wave Ratio (VSWR) input dan output yang diperoleh berturut-turut sebesar 3.5674 dan 1.7718.

Kata kunci: DVB-T2, LNA, Televisi, Gain, Noise Figure

 

ABSTRACT

Digital Video Broadcasting-Second Generation Terrestrial (DVB-T2) is the international standard that over shadows the current implementation of digital television. In the DVB-T2 configuration, there is a signal receiving device on the receiver side. The problem that is often encountered is the weak signal power received. Therefore, a power amplifier is needed in the receiving system, namely Low Noise Amplifier (LNA) which is placed after the receiving antenna. In this research, LNA was realized using a BJT BFR96 transistor with a dual-stage configuration design target, λ/4 impedance matching transformer on the input and output sides, and a lumped element for interstage matching impedances. LNA is realized to work optimally at frequency of 630 MHz. The Gain and Noise Figure (NF) values obtained were 12.96 dB and 4.05 dB, respectively. In addition, the input and output Voltage Standing Wave Ratio (VSWR) values obtained were 3.5674 and 1.7718, respectively.

Keywords: DVB-T2, LNA, Television, Gain, Noise Figure


Kata Kunci


DVB-T2; LNA; Televisi; Gain; Noise Figure

Teks Lengkap:

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Referensi


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DOI: https://doi.org/10.26760/elkomika.v8i1.1

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ISSN (print) : 2338-8323 | ISSN (electronic) : 2459-9638

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