Analysis of an adaptive wideband duplexer with double-loop cancellation

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http://eprints.org/relation/isVersionOf https://vuir.vu.edu.au/id/dark_document/22369 http://eprints.org/relation/isVolatileVersionOf https://vuir.vu.edu.au/id/dark_document/22369 http://eprints.org/relation/issmallThumbnailVersionOf https://vuir.vu.edu.au/id/dark_document/22369 22388 2 2268257 document 22388 lightbox.jpg image/png d7d303e7f976d49a613b5b7eb426af82 MD5 66143 2017-11-09 06:20:17 https://vuir.vu.edu.au/1325/7/lightbox.jpg 1325 7 7 image/png other Thumbnails conversion from text to thumbnail_lightbox en staffonly

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http://eprints.org/relation/isVersionOf https://vuir.vu.edu.au/id/dark_document/22370 http://eprints.org/relation/isVolatileVersionOf https://vuir.vu.edu.au/id/dark_document/22370 http://eprints.org/relation/issmallThumbnailVersionOf https://vuir.vu.edu.au/id/dark_document/22370 archive 292 disk0/00/00/13/25 2012-10-24 05:49:28 2021-08-27 07:41:09 2012-10-24 05:49:28 article show Kannangara Shyama Dilrukshi Kannangara, Shyama Dilrukshi Faulkner Michael Faulkner, Michael Analysis of an adaptive wideband duplexer with double-loop cancellation pub 290000 FOR_2008_090600 tafeengineering Adaptive duplexer, cancellation bandwith, signal cancellation, software radio, wideband duplexer An active wideband duplexer reduces the need for multiple switched duplexing filters in multiband software radio implementations. The technique is based on a two-step isolation process: 1) a low isolation device and 2) an active double-loop canceling technique that leads to two nulls, one at the desired receive frequency and the other at the transmit frequency. Two cancellation paths generate replicas of the residual transmitter interference signal and noise signal for subtraction from the output of the low isolation device. The feasibility of wideband cancellation mainly depends on the duplexing offset and the operating range of delays in the main path and the cancellation paths. The adjustment range of the coefficients in the cancellation path puts further constraints on these delays. This paper presents a theoretical analysis of double-loop cancellation using geometrical representations. The delay boundaries are derived for a given adjustment range of the vector attenuators (coefficients) used in the cancellation paths. The relationship between cancellation bandwidth and residual cancellation level is shown to be linear (6 dB/octave) and related to the loop delays and the duplexing offset. 2007-07 published IEEE 10.1109/TVT.2007.897652 http://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4277076&isnumber=4277057 22369 2 2268233 dark_document 22369 56tvt04-kannangarafaulkner.pdf application/pdf 2fb9f12560191138a1dc9a377f2bae6e MD5 647674 2017-11-09 06:09:31 1325 1 1 application/pdf text Paper en staffonly

56tvt04-kannangarafaulkner.pdf

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56tvt04-kannangara-proof.pdf

none Transactions on vehicular technology 56 4 1971-1982 TRUE 0018-9545 Includes references: pp. 1981-1982. FALSE 20 2-s2.0-34547868441 2023-07-01 04:05:33