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Design of Reconfigurable Bandwidth Filtering Antenna and Its Applications in IR/UWB System

College of Intelligence Science and Technology, National University of Defense Technology, Changsha 410073, China
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Electronics 2020, 9(1), 163; https://doi.org/10.3390/electronics9010163
Received: 4 December 2019 / Revised: 13 January 2020 / Accepted: 14 January 2020 / Published: 15 January 2020
A reconfigurable bandwidth antenna for an impulse radio-UWB (IR/UWB) system design is illustrated in this paper. By adopting a continuously tunable low-pass filter by varactor at the feed of the antenna, the proposed antenna obtains a continuous tunable bandwidth from 1.02 GHz to 2.42 GHz. To ensure the identifiability of transmitted pulses in (IR-UWB) system, the antenna is analyzed in both frequency domain and time domain. The proposed antenna is valid with a system fidelity factor (SFF) above 0.8 while the bandwidth is tuning. The compact size, low cost, and tunable bandwidth with the identifiability of the transmitted pulse makes it suitable for UWB impulse radars to improve the utility ratio of frequency, and dynamic adjustment avoids interference of the IR-UWB in other communication frequency bands. View Full-Text
Keywords: reconfigurable bandwidth; filtering antenna; IR-UWB; SFF; ultra-wideband antenna reconfigurable bandwidth; filtering antenna; IR-UWB; SFF; ultra-wideband antenna
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Zhang, Z.; Pan, Z. Design of Reconfigurable Bandwidth Filtering Antenna and Its Applications in IR/UWB System. Electronics 2020, 9, 163.

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