Low-profile UWB antenna with unidirectional radiation pattern analyzed with the theory of characteristic modes

Peñafiel-Ojeda, Carlos Ramiro; Cabedo-Fabrés, Marta; Llanga-Vargas, Anibal; Ferrando‐Bataller, Miguel

doi:10.1016/j.aeue.2021.153981

Cited by 4 publications

(2 citation statements)

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“…2 Since UWB utilizes nanosecond or narrower pulses to transmit information, the relative bandwidth can exceed over 100% and the antenna design becomes a key issue. [3][4][5][6] Printed UWB antennas have received widespread attention due to their low profile and ease of integration. 7,8 The planar Vivaldi antenna is widely applied in UWB systems due to its advantages such as good directionality and low cross polarization.…”

Section: Introductionmentioning

confidence: 99%

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Miniaturization of ultra‐wideband Vivaldi antenna by utilizing double‐layer structure with slots

Lei

2023

Micro & Optical Tech Letters

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In a Vivaldi antenna, a symmetrical double‐sided structure is introduced to reduce the lower‐side frequency. Multiple transverse and longitudinal slots loaded into the redundant conductor layer of the Vivaldi structure can stimulate resonant modes at the higher frequency end, further broadening the antenna bandwidth towards high frequencies. Meanwhile, impedance matching slots are introduced into the conductor layer on the feed side to achieve ultra‐wideband (UWB) antenna. The overall size of the final antenna is 23.5 mm × 30.0 mm × 2.4 mm, while the relative bandwidth (S11 < –10 dB) reaches 142% (2.49–14.78 GHz). This miniaturized UWB antenna has similar directional patterns in the operating band, with an average gain of 4.82 dB.

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Section: Introductionmentioning

confidence: 99%

“…UWB technology is also widely used in wireless positioning 2 . Since UWB utilizes nanosecond or narrower pulses to transmit information, the relative bandwidth can exceed over 100% and the antenna design becomes a key issue 3–6 …”

Section: Introductionmentioning

confidence: 99%