A K-band VCO-based Impulse Generator for UWB Radar Sensors

2020 ◽  
Author(s):  
Byeong Jae Seo ◽  
Yun Seong Eo ◽  
Seung Hwan Jung
Keyword(s):  
Impulse Generator ◽  
Radar Sensors ◽  
Uwb Radar ◽  
K Band

scholarly journals Semicircular Patch-Embedded Vivaldi Antenna for Miniaturized UWB Radar Sensors

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 5988
Author(s):  
Jungwoo Seo ◽  
Jae Hee Kim ◽  
Jungsuek Oh
Keyword(s):  
Electric Fields ◽  
Impedance Matching ◽  
Low Frequency ◽  
Electrical Fields ◽  
Radar Sensors ◽  
Gain Enhancement ◽  
Uwb Radar ◽  
Vivaldi Antenna ◽  
Matching Techniques ◽  
Good Agreement

A microstrip-to-slot line-fed miniaturized Vivaldi antenna using semicircular patch embedment is proposed in this study. The conventional Vivaldi antenna has ultrawide bandwidth, but suffers from low gain in the low-frequency band. The proposed antenna topology incorporates the embedment of semicircular patch elements into the side edge of the antenna. This enables the phases of electric fields at both ends of the antenna to be out of phase. Since the distance between the two ends are λL/2 where λL is the wavelength at a low operating frequency, this antenna topology can achieve the constructive addition of electrical fields at the radiating end, leading to gain enhancement at the chosen low frequency. In comparison with the conventional Vivaldi antenna, the proposed antenna has a wider bandwidth from 2.84 to 9.83 GHz. Moreover, the simulated result shows a gain enhancement of 5 dB at low frequency. This cannot be realized by the conventional low-band impedance matching techniques only relying on slotted topologies. The measured results of this proposed antenna with a size of 45 × 40 × 0.8 mm3 are in good agreement with the simulated results.

K-Band Dual-Mode Receiver CMOS IC for FMCW/UWB Radar

2014 ◽  
Vol 61 (6) ◽  
pp. 393-397 ◽  
Author(s):  
Gitae Pyo ◽  
Jaemo Yang ◽  
Chol-Young Kim ◽  
Songcheol Hong
Keyword(s):  
Dual Mode ◽  
Uwb Radar ◽  
Cmos Ic ◽  
K Band

Si Based UWB Radar Sensors

2007 ◽  
Author(s):  
Ian Gresham ◽  
Alan Jenkins ◽  
Noyan Kinayman ◽  
Rob Point ◽  
Yumin Lu ◽  
...  
Keyword(s):  
Radar Sensors ◽  
Uwb Radar

A counting sensor for inbound and outbound people using IR-UWB radar sensors

2016 ◽  
Author(s):  
Jeong Woo Choi ◽  
Sung Ho Cho ◽  
Young Soo Kim ◽  
No Joong Kim ◽  
Soon Sung Kwon ◽  
...  
Keyword(s):  
Radar Sensors ◽  
Uwb Radar

K-Band Single-Path Dual-Mode CMOS Transmitter for FMCW/UWB Radar

2016 ◽  
Vol 26 (10) ◽  
pp. 858-860 ◽  
Author(s):  
Gitae Pyo ◽  
Jaemo Yang ◽  
Choul-Young Kim ◽  
SongCheol Hong
Keyword(s):  
Dual Mode ◽  
Uwb Radar ◽  
Cmos Transmitter ◽  
Single Path ◽  
K Band

Bi-Directional Passing People Counting System Based on IR-UWB Radar Sensors

2018 ◽  
Vol 5 (2) ◽  
pp. 512-522 ◽  
Author(s):  
Jeong Woo Choi ◽  
Xuanjun Quan ◽  
Sung Ho Cho
Keyword(s):  
Counting System ◽  
People Counting ◽  
Radar Sensors ◽  
Uwb Radar
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