High-performance active polyphase filter design for digital TV tuner

This paper reviews the state of art of a polyphase complex filter for RF front-end low-IF transceivers applications. We then propose a multi-stage polyphase filter design to generate a quadrature I/Q signal to achieve a wideband precision quadrature phase shift with a constant 90 ° phase difference for self-interference cancellation circuit for full duplex radio. The number of the stages determines the bandwidth requirement of the channel. An increase of 87% in bandwidth is attained when our design is implemented in multi-stage from 2 to an extended 6 stages. A 4-stage polyphase filter achieves 2.3 GHz bandwidth.

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“…The accuracy of RC network will determine the filtering performance. One drawback of PPF when implemented on chip is its large chip size [21].…”

Section: Polyphase Filtermentioning

confidence: 99%

Quadrature broadband phase shift generation using passive RC polyphase filter for RF front-end

Dutkiewicz

Huang

Nguyen

et al. 2016

2016 16th International Symposium on Communications and Information Technologies (ISCIT)

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Design of Sharp Cut-Off Digital Tuner Using Firefly Algorithm

Dash¹,

Dam

Swain³

2017

2017 International Conference on Information Technology (ICIT)

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Design of an optimal layout RF passive polyphase filter for large image rejection

Haddad¹,

Rahajandraibe²,

Slimane³

2015

2015 IEEE International Symposium on Circuits and Systems (ISCAS)

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This article presents the design and implementation of a multi-stage radio-frequency (RF) passive polyphase filter (PPF). The layout parasitics and mismatch which deteriorate significantly the RF filter performance are analyzed and modeled. To reduce this parasitic degradation, a novel optimal layout technique is proposed. It is based on reproducing the same optimized PPF stage layout for the different stages while the desired bandwidth is ensured due to an optimal sizing of the inter-stages connections. This approach has been validated with on chip measurements. Using the proposed techniques more than 55 dB of image rejection over the [1.5; 3.3] GHz bandwidth is demonstrated while achieving zero power consumption and small silicon area in 130nm CMOS technology.

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High-performance active polyphase filter design for digital TV tuner

Cited by 3 publications

References 7 publications

Quadrature broadband phase shift generation using passive RC polyphase filter for RF front-end

Quadrature broadband phase shift generation using passive RC polyphase filter for RF front-end

Design of Sharp Cut-Off Digital Tuner Using Firefly Algorithm

Design of an optimal layout RF passive polyphase filter for large image rejection

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