Earticle

초록

영어

This paper presents a new low voltage tunable Low Pass (LP) filter for Software Defined Radios (SDR) wireless transceivers. The proposed LP filter attempts to optimize the performance of SDRs as it operates at relatively low voltage while providing wide tunable range at the same time. It is constructed using Gm-C technique employing three Operational Transconductance Amplifiers (OTA) and two grounding capacitors. The filter also exhibits independent electronic tuning of center frequency (fc) and quality factor (Q) providing more accuracy in its frequency response. Also its circuit can be synthesized to produce multiple other filter frequency responses by varying inputs which can be useful in other applications. The OTA is the main active element in the filter operating at input supply voltage of 1 V and providing open loop dc gain of 38 dB with power dissipation of 270 uW. The proposed LP filter is envisioned as a part of Zero-IF SDR architecture operating at a baseband section. Simulations are done in HSPICE using CMOS 0.18μm process parameters as functional verification of the presented theory.

목차

Abstract
 1. Introduction
 2. Software Defined Radios
 3. Low Voltage Tunable Gm-C Filter
  3.1. Low Voltage Operational Transconductance Amplifier
 4. Simulations and Results
 5. Conclusion
 References

키워드

저자

• Barun Basnet [ Chonbuk National University, Dept. of IT Applied System Engineering 567 Baekje-daero, Jeollabuk-do, Republic of Korea ]
• Junho Bang [ Chonbuk National University, Dept. of IT Applied System Engineering 567 Baekje-daero, Jeollabuk-do, Republic of Korea ]
• Jeho Song [ Chonbuk National University, Dept. of IT Applied System Engineering 567 Baekje-daero, Jeollabuk-do, Republic of Korea ]
• Inho Ryu [ Chonbuk National University, Dept. of IT Applied System Engineering 567 Baekje-daero, Jeollabuk-do, Republic of Korea ]
• Woochoun Lee [ Chonbuk National University, Dept. of IT Applied System Engineering 567 Baekje-daero, Jeollabuk-do, Republic of Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Control and Automation

• 간기

  월간

• pISSN

  2005-4297

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605