Frequency-Agile, Efficient, Near-Field Resonant Parasitic Monopole Antenna
A simple, frequency-agile, efficient, near-field resonant parasitic (NFRP) monopole antenna is presented. The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experi...
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| Veröffentlicht in: | IEEE transactions on antennas and propagation 2014-03, Vol.62 (3), p.1479-1483 |
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| container_end_page | 1483 |
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| container_title | IEEE transactions on antennas and propagation |
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| creator | Ming-Chun Tang Ziolkowski, Richard W. Shaoqiu Xiao Mei Li Junrui Zhang |
| description | A simple, frequency-agile, efficient, near-field resonant parasitic (NFRP) monopole antenna is presented. The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experimental results demonstrate that this frequency-agile antenna exhibits a 5.56% 10-dB fractional impedance bandwidth, which is more than four times larger than the 1.33% value of the original fixed-capacitor passive system. Good impedance matching (|S 11 | min ≤ -20 dB), relatively high radiation efficiency ( RE >76%), stable and uniform radiation patterns, and peak gain values between 3.57-4.05 dBi were measured over this frequency-agile range. |
| doi_str_mv | 10.1109/TAP.2013.2295228 |
| format | Article |
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The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experimental results demonstrate that this frequency-agile antenna exhibits a 5.56% 10-dB fractional impedance bandwidth, which is more than four times larger than the 1.33% value of the original fixed-capacitor passive system. 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(IEEE) Mar 2014</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c354t-ffb27a472efc6369be6b72e9cdbab2c2b130df69ff542666d5ba13869b1862213</citedby><cites>FETCH-LOGICAL-c354t-ffb27a472efc6369be6b72e9cdbab2c2b130df69ff542666d5ba13869b1862213</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://ieeexplore.ieee.org/document/6685875$$EHTML$$P50$$Gieee$$H</linktohtml><link.rule.ids>314,776,780,792,27901,27902,54733</link.rule.ids><linktorsrc>$$Uhttps://ieeexplore.ieee.org/document/6685875$$EView_record_in_IEEE$$FView_record_in_$$GIEEE</linktorsrc><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=28402730$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Ming-Chun Tang</creatorcontrib><creatorcontrib>Ziolkowski, Richard W.</creatorcontrib><creatorcontrib>Shaoqiu Xiao</creatorcontrib><creatorcontrib>Mei Li</creatorcontrib><creatorcontrib>Junrui Zhang</creatorcontrib><title>Frequency-Agile, Efficient, Near-Field Resonant Parasitic Monopole Antenna</title><title>IEEE transactions on antennas and propagation</title><addtitle>TAP</addtitle><description>A simple, frequency-agile, efficient, near-field resonant parasitic (NFRP) monopole antenna is presented. The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experimental results demonstrate that this frequency-agile antenna exhibits a 5.56% 10-dB fractional impedance bandwidth, which is more than four times larger than the 1.33% value of the original fixed-capacitor passive system. 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The NFRP element is a capacitively-loaded loop (CLL) augmented with a varactor diode to achieve the frequency tunability. The numerical and experimental studies agree reasonably well. The experimental results demonstrate that this frequency-agile antenna exhibits a 5.56% 10-dB fractional impedance bandwidth, which is more than four times larger than the 1.33% value of the original fixed-capacitor passive system. Good impedance matching (|S 11 | min ≤ -20 dB), relatively high radiation efficiency ( RE >76%), stable and uniform radiation patterns, and peak gain values between 3.57-4.05 dBi were measured over this frequency-agile range.</abstract><cop>New York, NY</cop><pub>IEEE</pub><doi>10.1109/TAP.2013.2295228</doi><tpages>5</tpages></addata></record> |
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| ispartof | IEEE transactions on antennas and propagation, 2014-03, Vol.62 (3), p.1479-1483 |
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| subjects | Antenna measurements Antennas Applied sciences Bandwidth Capacitance Exact sciences and technology Frequency agile Frequency measurement Gain Impedance impedance bandwidth Impedance matching Mathematical models monopole antenna Monopole antennas Noise levels radiation efficiency Radiocommunications Resonant frequency Telecommunications Telecommunications and information theory varactor diode Varactor diodes Varactors |
| title | Frequency-Agile, Efficient, Near-Field Resonant Parasitic Monopole Antenna |
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