Submitted on: 15 June 2016.
Revised on: 20 July 2016.
Accepted on: 29 August 2016.
___________________IET Circuits Devices & Systems
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Submitted on: 13 July 2001.
Revised on: 09 September 2001.
Accepted on: 04 November 2001.
___________________IET Circuits Devices & Systems
Submitted on: 06 July 2013.
Revised on: 30 October 2013.
Accepted on: 28 November 2013.
___________________IET Circuits Devices & Systems
Submitted on: 18 September 2014.
Revised on: 23 October 2014.
Accepted on: 20 December 2014.
___________________IET Circuits Devices & Systems
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