A multi-band WCDMA SAW-less receivers with frequency selective feedback loop

Sungho Beck; Stephen T. Kim; Kyutae Lim; Manos M. Tentzeris; Joy Laskar

doi:10.1109/MWSCAS.2011.6026387

A multi-band WCDMA SAW-less receivers with frequency selective feedback loop

Sungho Beck^*
, Stephen T. Kim
, Kyutae Lim
, Manos M. Tentzeris
, Joy Laskar

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › Scientific › peer-review

Abstract

For frequency division duplex (FDD) wide band code division multiple access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. Previously, to cancel the TX leakage, a frequency selective feedback was proposed, but it had the unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper proposes a new method to achieve a predictable feedback loop characteristic. In addition, to achieve the TX leakage cancellation for multi-band, a local oscillator (LO) phase shift technique is also presented. The proposed receiver which was composed of high- and low-band LNAs and mixers, the TX canceller, and the LO shifter was implemented using 0.18-μm CMOS process and is under fabrication. Simulation results met the required specifications which were delivered from the WCDMA specifications.

Original language	English
Title of host publication	54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
DOIs	https://doi.org/10.1109/MWSCAS.2011.6026387
Publication status	Published - 2011
Publication type	A4 Article in conference proceedings
Event	54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011 - Seoul, Korea, Republic of Duration: 7 Aug 2011 → 10 Aug 2011

Conference

Conference	54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011
Country/Territory	Korea, Republic of
City	Seoul
Period	7/08/11 → 10/08/11

ASJC Scopus subject areas

Electrical and Electronic Engineering
Electronic, Optical and Magnetic Materials

Access to Document

10.1109/MWSCAS.2011.6026387

Cite this

@inproceedings{cf7baf42e21945dea0fc19da866fbd0b,

title = "A multi-band WCDMA SAW-less receivers with frequency selective feedback loop",

abstract = "For frequency division duplex (FDD) wide band code division multiple access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. Previously, to cancel the TX leakage, a frequency selective feedback was proposed, but it had the unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper proposes a new method to achieve a predictable feedback loop characteristic. In addition, to achieve the TX leakage cancellation for multi-band, a local oscillator (LO) phase shift technique is also presented. The proposed receiver which was composed of high- and low-band LNAs and mixers, the TX canceller, and the LO shifter was implemented using 0.18-μm CMOS process and is under fabrication. Simulation results met the required specifications which were delivered from the WCDMA specifications.",

author = "Sungho Beck and Kim, \{Stephen T.\} and Kyutae Lim and Tentzeris, \{Manos M.\} and Joy Laskar",

year = "2011",

doi = "10.1109/MWSCAS.2011.6026387",

language = "English",

isbn = "9781612848570",

booktitle = "54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011",

note = "54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011 ; Conference date: 07-08-2011 Through 10-08-2011",

}

Beck, S, Kim, ST, Lim, K, Tentzeris, MM & Laskar, J 2011, A multi-band WCDMA SAW-less receivers with frequency selective feedback loop. in 54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011., 6026387, 54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011, Seoul, Korea, Republic of, 7/08/11. https://doi.org/10.1109/MWSCAS.2011.6026387

TY - GEN

T1 - A multi-band WCDMA SAW-less receivers with frequency selective feedback loop

AU - Beck, Sungho

AU - Kim, Stephen T.

AU - Lim, Kyutae

AU - Tentzeris, Manos M.

AU - Laskar, Joy

PY - 2011

Y1 - 2011

N2 - For frequency division duplex (FDD) wide band code division multiple access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. Previously, to cancel the TX leakage, a frequency selective feedback was proposed, but it had the unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper proposes a new method to achieve a predictable feedback loop characteristic. In addition, to achieve the TX leakage cancellation for multi-band, a local oscillator (LO) phase shift technique is also presented. The proposed receiver which was composed of high- and low-band LNAs and mixers, the TX canceller, and the LO shifter was implemented using 0.18-μm CMOS process and is under fabrication. Simulation results met the required specifications which were delivered from the WCDMA specifications.

AB - For frequency division duplex (FDD) wide band code division multiple access (WCDMA) system, transmit (TX) signal leakage at the receiver input degrades the receiver performance. Previously, to cancel the TX leakage, a frequency selective feedback was proposed, but it had the unpredictable feedback loop characteristic due to the uncertainty of the duplexer impedance. This paper proposes a new method to achieve a predictable feedback loop characteristic. In addition, to achieve the TX leakage cancellation for multi-band, a local oscillator (LO) phase shift technique is also presented. The proposed receiver which was composed of high- and low-band LNAs and mixers, the TX canceller, and the LO shifter was implemented using 0.18-μm CMOS process and is under fabrication. Simulation results met the required specifications which were delivered from the WCDMA specifications.

UR - https://www.scopus.com/pages/publications/80053630391

U2 - 10.1109/MWSCAS.2011.6026387

DO - 10.1109/MWSCAS.2011.6026387

M3 - Conference contribution

AN - SCOPUS:80053630391

SN - 9781612848570

BT - 54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011

T2 - 54th IEEE International Midwest Symposium on Circuits and Systems, MWSCAS 2011

Y2 - 7 August 2011 through 10 August 2011

ER -

A multi-band WCDMA SAW-less receivers with frequency selective feedback loop

Abstract

Conference

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this