A novel ultra-wideband microstrip-line fed wide-slot antenna

2006 ◽  
Vol 48 (4) ◽  
pp. 776-777 ◽  
Author(s):  
D. Chen ◽  
C. H. Cheng
Keyword(s):  
Microstrip Line ◽  
Ultra Wideband ◽  
Slot Antenna

scholarly journals Design of Ultra-Wideband MIMO Antenna for Breast Tumor Detection

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
Liting Wang ◽  
Bin Huang
Keyword(s):  
Cancer Detection ◽  
Breast Tumor ◽  
Mutual Coupling ◽  
Microstrip Line ◽  
Breast Cancer Detection ◽  
Imaging Systems ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Mimo Antenna ◽  
Measurement Results

A MIMO antenna composed by microstrip line-fed circular slot antenna is proposed. This antenna is used in ultra-wideband microwave imaging systems aimed for early breast cancer detection. The antenna is designed to operate across the ultra-wideband frequency band in the air. The mutual coupling between the antenna elements has been investigated to be low enough for MIMO medical imaging applications. Both the simulation and measurement results are shown to illustrate the performances of the proposed antenna.

An Ultra-Wideband Antenna for Mobile Handset Applications

2011 ◽  
Vol 383-390 ◽  
pp. 4457-4460 ◽  
Author(s):  
Wei Hua Zong ◽  
Xiao Yun Qu ◽  
Yong Xin Guo ◽  
Ming Xin Shao
Keyword(s):  
Mobile Phone ◽  
Microstrip Line ◽  
Ground Plane ◽  
Hybrid Structure ◽  
Ultra Wideband ◽  
Slot Antenna ◽  
Wideband Antenna ◽  
Mobile Phone Application ◽  
Circular Patch ◽  
Mobile Handset

A printed open-ended slot antenna is designed for mobile phone application. The slot has a hybrid structure of a rectangle and a circle cut out of a 60mm×115mm ground plane, and fed by a microstrip line with a circular patch connected to a bent strip on the upper part of the patch. The proposed antenna provides a wide -6dB bandwidth covering 1.73-11GHz. It can be used in DCS1800, PCS1900, UMTS2000, TD-SCDMA, Bluetooth, LTE2.5GHz, WiMax, and UWB

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.

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