Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wideband Radio Receivers

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SHAMSI A.R.

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Journal: Advanced Defense Science and Technology Year:2020 | Volume:11 | Issue:2 Page(s): 185-190

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Title

Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wideband Radio Receivers

Author(s)

SHAMSI A.R. | Issue Writer Certificate

Keywords

Self-CouplingQ1

WidebandQ1

Quadrature Delta Sigma ModulatorQ1

Radio ReceiversQ1

Abstract

Signal bandwidth (BW) is one of the most important factors in transmitting and receiving rate of information in portable radio receiver systems in advanced defense science. Therefore, it is desire to design different parts of these systems with a larger bandwidth and less power consumption. In this paper, Self-Coupling method is applied to the quadrature modulator in order increase its bandwidth. In this approach, without the addition of active blocks, modulator's order is increased and its bandwidth is also improved which results in power saving. Utilizing this method increases the number of zeros in quadrature modulator transfer function and results in a higher order modulator performance. The proposed method is applied to a three-order quadrature modulator, and it is significantly increased the bandwidth. The purposed method results in a 0. 05fs bandwidth and a signal-to-noise ratio (SNR) of 91. 25 dB which is improved by 25% compare to the results obtained in a modulator without the selfcoupling( BW=0. 04fs and SNR= 92. 86dB).

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APA: Copy

SHAMSI, A.R.. (2020). Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wideband Radio Receivers. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, 11(2 ), 185-190. SID. https://sid.ir/paper/369508/en

Vancouver: Copy

SHAMSI A.R.. Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wideband Radio Receivers. (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY[Internet]. 2020;11(2 ):185-190. Available from: https://sid.ir/paper/369508/en

IEEE: Copy

A.R. SHAMSI, “Increasing the Order of Quadrature Delta Sigma Modulator without Addition of Active Blocks for Wideband Radio Receivers,” (JOURNAL OF ADVANCED DEFENCE SCIENCE AND TECHNOLOGY) JOURNAL OF PASSIVE DEFENCE SCIENCE AND TECHNOLOGY, vol. 11, no. 2 , pp. 185–190, 2020, [Online]. Available: https://sid.ir/paper/369508/en

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