Slot antenna for ultra-wideband communications

2008 ◽  
Vol 50 (3) ◽  
pp. 616-617 ◽  
Author(s):  
Chih-Yu Huang ◽  
Chia-Chou Tsai ◽  
Jieh-Sen Kuo
Keyword(s):  
Ultra Wideband ◽  
Slot Antenna ◽  
Wideband Communications

CPW-fed bow-tie slot antenna for ultra-wideband communications

2006 ◽  
Vol 42 (19) ◽  
pp. 1073 ◽  
Author(s):  
C.-Y. Huang ◽  
D.-Y. Lin
Keyword(s):  
Ultra Wideband ◽  
Slot Antenna ◽  
Wideband Communications ◽  
Bow Tie

Compact wide-slot antenna for ultra-wideband communications

2008 ◽  
Vol 44 (15) ◽  
pp. 892 ◽  
Author(s):  
W.-F. Chen ◽  
C.-C. Tsai ◽  
C.-Y. Huang
Keyword(s):  
Ultra Wideband ◽  
Slot Antenna ◽  
Wideband Communications

scholarly journals Wideband-Narrowband Switchable Tapered Slot Antenna for Breast Cancer Diagnosis and Treatment

2021 ◽  
Vol 11 (8) ◽  
pp. 3606
Author(s):  
Seonho Lim ◽  
Young Joong Yoon
Keyword(s):  
Breast Cancer ◽  
Coupling Effect ◽  
Breast Cancer Diagnosis ◽  
Microwave Imaging ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Pin Diode ◽  
Time Frequency ◽  
Switching Mode ◽  
Meander Line

In this paper, a wideband-narrowband switchable tapered slot antenna (TSA) with a compact meander line resonator for an integrated microwave imaging and hyperthermia system was proposed. A compact meander line resonator, which exhibited band-pass characteristics and provided narrowband characteristics by using one PIN diode, was fabricated beneath the tapered slot of the wideband TSA to minimize the degradation of the wideband characteristics. Moreover, the electromagnetic energy was transferred to the meander line resonator with a coupling effect to ensure effective frequency switching. By adapting a PIN diode on the meander line resonator, frequency switching could be achieved. In this way, the proposed antenna could operate in a real-time frequency switching mode between the ultra-wideband (UWB; 3.1~10 GHz), which is used for microwave imaging, and the 2.45 GHz band (industrial, scientific, and medical, ISM band), which is used for microwave hyperthermia. Frequency and time-domain results proved the applicability of the proposed antenna to an integrated breast cancer detection and treatment system.

Selectivity and in-band impedance enhancement of a compact slot antenna with defected ground structures

2019 ◽  
Vol 11 (10) ◽  
pp. 1010-1016
Author(s):  
Hailong Yang ◽  
Xiaoli Xi ◽  
Lili Wang ◽  
Yuchen Zhao ◽  
Xiaomin Shi
Keyword(s):  
Reflection Coefficient ◽  
Impedance Matching ◽  
Ultra Wideband ◽  
Band Edge ◽  
Slot Antenna ◽  
Defected Ground Structure ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Uwb Antennas ◽  
Low Pass

AbstractIn this study, a new ultra-wideband (UWB) band-edge selectivity antenna with a modified radiation slot using defected ground structure (DGS) is presented to obtain bandpass filtering reflection coefficient and gain performance. The well-designed DGS is designed on backside metallic of the substrate and can be seen as a low-pass filter that provides a good roll-off at a higher frequency. By connecting the DGS and the stepped slot and making them merge with each other, good cut-off property in the upper passband and better in-band impedance characteristics are obtained. Measured results show that the proposed design not only shows good band-edge selectivity in reflection coefficient and gain performance but also has a good impedance matching of −13.5 dB reflection coefficients and a good radiation efficiency of 90% in the operating frequencies. The measured bandwidth defined with the reflection coefficient less than −10 dB is from 3.1–11.2 GHz. Furthermore, the size of the filtering UWB antenna is 22 mm × 12 mm, which is smaller than many individual UWB antennas and UWB filters.

Space–Time Coding for Multiuser Ultra-Wideband Communications

2006 ◽  
Vol 54 (11) ◽  
pp. 1960-1972 ◽  
Author(s):  
Chadi Abou-Rjeily ◽  
Norbert Daniele ◽  
Jean-Claude Belfiore
Keyword(s):  
Space Time ◽  
Ultra Wideband ◽  
Space Time Coding ◽  
Wideband Communications ◽  
Time Coding

Modified antipodal Vivaldi antenna for ultra‐wideband communications

2016 ◽  
Vol 10 (4) ◽  
pp. 401-405 ◽  
Author(s):  
Rajesh Natarajan ◽  
Jithila V. George ◽  
Malathi Kanagasabai ◽  
Livya Lawrance ◽  
Balaji Moorthy ◽  
...  
Keyword(s):  
Ultra Wideband ◽  
Wideband Communications ◽  
Vivaldi Antenna

Ultra‐wideband DRA integrated with narrow‐band slot antenna

2014 ◽  
Vol 50 (3) ◽  
pp. 139-141 ◽  
Author(s):  
I. Messaoudene ◽  
T.A. Denidni ◽  
A. Benghalia
Keyword(s):  
Narrow Band ◽  
Ultra Wideband ◽  
Slot Antenna
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