The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Distorções harmônicas de uma antena ESPAR (Electronically Steerable Passive Array Radiator) do tipo filme leve recentemente desenvolvida são investigadas experimentalmente. Essas distorções surgem da não linearidade dos diodos varactores que estão diretamente integrados aos elementos radiadores parasitas para controlar o padrão de radiação da antena. Uma técnica de medição reativa de campo próximo que emprega sondas de baixa interferência em uma caixa anecóica ultrapequena é usada para reduzir o tempo e o custo experimental. Um par de varactor anti-série é introduzido e comparado com o varactor único convencional. Consequentemente, uma antena ESPAR equipada com o par varactor anti-série exibe notável supressão de distorção não linear. Em particular, o harmônico de segunda e terceira ordem é reduzido em aproximadamente 20 dB e 12 dB em relação ao nível de uma única antena ESPAR do tipo varator, respectivamente.
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Qing HAN, Keizo INAGAKI, Kyouichi IIGUSA, Robert SCHLUB, Takashi OHIRA, Masami AKAIKE, "Harmonic Distortion Suppression Technique for Varactor-Loaded Parasitic Radiator Antennas" in IEICE TRANSACTIONS on Electronics,
vol. E85-C, no. 12, pp. 2015-2021, December 2002, doi: .
Abstract: Harmonic distortions of a recently developed lightweight film-type ESPAR (Electronically Steerable Passive Array Radiator) antenna are investigated experimentally. These distortions arise from the nonlinearity of the varactor diodes that are directly integrated with the parasitic radiator elements to control the antenna's radiation pattern. A reactive-near-field measurement technique that employs low-interference probes in an ultra-small anechoic box is used to reduce experimental time and cost. An anti-series varactor pair is introduced and compared with the conventional single varactor. Consequently, an ESPAR antenna equipped with the anti-series varactor pair exhibits remarkable suppression of nonlinear distortion. In particular, the second- and the third-order harmonic is reduced by approximately 20 dB and 12 dB from the level of a single varactor type ESPAR antenna, respectively.
URL: https://global.ieice.org/en_transactions/electronics/10.1587/e85-c_12_2015/_p
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@ARTICLE{e85-c_12_2015,
author={Qing HAN, Keizo INAGAKI, Kyouichi IIGUSA, Robert SCHLUB, Takashi OHIRA, Masami AKAIKE, },
journal={IEICE TRANSACTIONS on Electronics},
title={Harmonic Distortion Suppression Technique for Varactor-Loaded Parasitic Radiator Antennas},
year={2002},
volume={E85-C},
number={12},
pages={2015-2021},
abstract={Harmonic distortions of a recently developed lightweight film-type ESPAR (Electronically Steerable Passive Array Radiator) antenna are investigated experimentally. These distortions arise from the nonlinearity of the varactor diodes that are directly integrated with the parasitic radiator elements to control the antenna's radiation pattern. A reactive-near-field measurement technique that employs low-interference probes in an ultra-small anechoic box is used to reduce experimental time and cost. An anti-series varactor pair is introduced and compared with the conventional single varactor. Consequently, an ESPAR antenna equipped with the anti-series varactor pair exhibits remarkable suppression of nonlinear distortion. In particular, the second- and the third-order harmonic is reduced by approximately 20 dB and 12 dB from the level of a single varactor type ESPAR antenna, respectively.},
keywords={},
doi={},
ISSN={},
month={December},}
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TY - JOUR
TI - Harmonic Distortion Suppression Technique for Varactor-Loaded Parasitic Radiator Antennas
T2 - IEICE TRANSACTIONS on Electronics
SP - 2015
EP - 2021
AU - Qing HAN
AU - Keizo INAGAKI
AU - Kyouichi IIGUSA
AU - Robert SCHLUB
AU - Takashi OHIRA
AU - Masami AKAIKE
PY - 2002
DO -
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E85-C
IS - 12
JA - IEICE TRANSACTIONS on Electronics
Y1 - December 2002
AB - Harmonic distortions of a recently developed lightweight film-type ESPAR (Electronically Steerable Passive Array Radiator) antenna are investigated experimentally. These distortions arise from the nonlinearity of the varactor diodes that are directly integrated with the parasitic radiator elements to control the antenna's radiation pattern. A reactive-near-field measurement technique that employs low-interference probes in an ultra-small anechoic box is used to reduce experimental time and cost. An anti-series varactor pair is introduced and compared with the conventional single varactor. Consequently, an ESPAR antenna equipped with the anti-series varactor pair exhibits remarkable suppression of nonlinear distortion. In particular, the second- and the third-order harmonic is reduced by approximately 20 dB and 12 dB from the level of a single varactor type ESPAR antenna, respectively.
ER -