Noise Canceling Balun-LNA with Enhanced IIP2 and IIP3 for Digital TV Applications

Saeed SAEEDI; Mojtaba ATARODI

doi:10.1587/transele.E95.C.146

Noise Canceling Balun-LNA with Enhanced IIP2 and IIP3 for Digital TV Applications

Saeed SAEEDI, Mojtaba ATARODI

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An inductorless low noise amplifier (LNA) with active balun for digital TV (DTV) applications is presented. The LNA exploits a noise cancellation technique which allows for simultaneous wide-band impedance matching and low noise design. The matching and amplifier stages in the LNA topology perform single-ended to differential signal conversion with balanced output. The second and third-order nonlinearity of the individual amplifiers as well as the distortion caused by the interaction between the stages are suppressed to achieve high IIP2 and IIP3. A method for intrinsic cancellation of the second-order interaction is employed to reduce the dependence of the IIP3 on the frequency spacing between the interfering signals in the two-tone test of DTV tuners. Fabricated in a 0.18 µm CMOS technology, the LNA core size is 0.21 mm². Measurements show that the LNA IIP3 and IIP2 are +12 dBm and +21 dBm, respectively. The IIP3 variation is less than 5 dB in the 10 MHz to 200 MHz frequency spacing range. A voltage gain of 14.5 dB and a noise figure below 4 dB are achieved in a frequency range from 100 MHz to 1 GHz. The LNA consumes 11 mA from a 1.8 V supply voltage.

Publication: IEICE TRANSACTIONS on Electronics Vol.E95-C No.1 pp.146-154

Publication Date: 2012/01/01

Publicized

Online ISSN: 1745-1353

DOI: 10.1587/transele.E95.C.146

Type of Manuscript: PAPER

Category: Integrated Electronics

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Saeed SAEEDI, Mojtaba ATARODI, "Noise Canceling Balun-LNA with Enhanced IIP2 and IIP3 for Digital TV Applications" in IEICE TRANSACTIONS on Electronics, vol. E95-C, no. 1, pp. 146-154, January 2012, doi: 10.1587/transele.E95.C.146.
Abstract: An inductorless low noise amplifier (LNA) with active balun for digital TV (DTV) applications is presented. The LNA exploits a noise cancellation technique which allows for simultaneous wide-band impedance matching and low noise design. The matching and amplifier stages in the LNA topology perform single-ended to differential signal conversion with balanced output. The second and third-order nonlinearity of the individual amplifiers as well as the distortion caused by the interaction between the stages are suppressed to achieve high IIP2 and IIP3. A method for intrinsic cancellation of the second-order interaction is employed to reduce the dependence of the IIP3 on the frequency spacing between the interfering signals in the two-tone test of DTV tuners. Fabricated in a 0.18 µm CMOS technology, the LNA core size is 0.21 mm². Measurements show that the LNA IIP3 and IIP2 are +12 dBm and +21 dBm, respectively. The IIP3 variation is less than 5 dB in the 10 MHz to 200 MHz frequency spacing range. A voltage gain of 14.5 dB and a noise figure below 4 dB are achieved in a frequency range from 100 MHz to 1 GHz. The LNA consumes 11 mA from a 1.8 V supply voltage.
URL: https://globals.ieice.org/en_transactions/electronics/10.1587/transele.E95.C.146/_p

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@ARTICLE{e95-c_1_146,
author={Saeed SAEEDI, Mojtaba ATARODI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Noise Canceling Balun-LNA with Enhanced IIP2 and IIP3 for Digital TV Applications},
year={2012},
volume={E95-C},
number={1},
pages={146-154},
abstract={An inductorless low noise amplifier (LNA) with active balun for digital TV (DTV) applications is presented. The LNA exploits a noise cancellation technique which allows for simultaneous wide-band impedance matching and low noise design. The matching and amplifier stages in the LNA topology perform single-ended to differential signal conversion with balanced output. The second and third-order nonlinearity of the individual amplifiers as well as the distortion caused by the interaction between the stages are suppressed to achieve high IIP2 and IIP3. A method for intrinsic cancellation of the second-order interaction is employed to reduce the dependence of the IIP3 on the frequency spacing between the interfering signals in the two-tone test of DTV tuners. Fabricated in a 0.18 µm CMOS technology, the LNA core size is 0.21 mm². Measurements show that the LNA IIP3 and IIP2 are +12 dBm and +21 dBm, respectively. The IIP3 variation is less than 5 dB in the 10 MHz to 200 MHz frequency spacing range. A voltage gain of 14.5 dB and a noise figure below 4 dB are achieved in a frequency range from 100 MHz to 1 GHz. The LNA consumes 11 mA from a 1.8 V supply voltage.},
keywords={},
doi={10.1587/transele.E95.C.146},
ISSN={1745-1353},
month={January},}

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TY - JOUR
TI - Noise Canceling Balun-LNA with Enhanced IIP2 and IIP3 for Digital TV Applications
T2 - IEICE TRANSACTIONS on Electronics
SP - 146
EP - 154
AU - Saeed SAEEDI
AU - Mojtaba ATARODI
PY - 2012
DO - 10.1587/transele.E95.C.146
JO - IEICE TRANSACTIONS on Electronics
SN - 1745-1353
VL - E95-C
IS - 1
JA - IEICE TRANSACTIONS on Electronics
Y1 - January 2012
AB - An inductorless low noise amplifier (LNA) with active balun for digital TV (DTV) applications is presented. The LNA exploits a noise cancellation technique which allows for simultaneous wide-band impedance matching and low noise design. The matching and amplifier stages in the LNA topology perform single-ended to differential signal conversion with balanced output. The second and third-order nonlinearity of the individual amplifiers as well as the distortion caused by the interaction between the stages are suppressed to achieve high IIP2 and IIP3. A method for intrinsic cancellation of the second-order interaction is employed to reduce the dependence of the IIP3 on the frequency spacing between the interfering signals in the two-tone test of DTV tuners. Fabricated in a 0.18 µm CMOS technology, the LNA core size is 0.21 mm². Measurements show that the LNA IIP3 and IIP2 are +12 dBm and +21 dBm, respectively. The IIP3 variation is less than 5 dB in the 10 MHz to 200 MHz frequency spacing range. A voltage gain of 14.5 dB and a noise figure below 4 dB are achieved in a frequency range from 100 MHz to 1 GHz. The LNA consumes 11 mA from a 1.8 V supply voltage.
ER -