Intelligent Material Classification and Identification Using a Broadband Millimeter-Wave Frequency Comb Receiver

2020 ◽  
Vol 4 (7) ◽  
pp. 1-4 ◽  
Author(s):  
Babak Jamali ◽  
Deeban Ramalingam ◽  
Aydin Babakhani
Keyword(s):  
Millimeter Wave ◽  
Frequency Comb ◽  
Wave Frequency ◽  
Material Classification ◽  
Intelligent Material

scholarly journals Flexible Ultra-Wide Electro-Optic Frequency Combs for a High- Capacity Tunable 5G+ Millimeter-Wave Frequency Synthesizer

2021 ◽  
Vol 11 (22) ◽  
pp. 10742
Author(s):  
Li Liu ◽  
Yangguang Liu ◽  
Xiao-Zhi Gao ◽  
Xiaomin Zhang
Keyword(s):  
Phase Noise ◽  
Millimeter Wave ◽  
Frequency Synthesizer ◽  
Frequency Comb ◽  
High Capacity ◽  
Wave Frequency ◽  
Ultra Wideband ◽  
Tone Frequency ◽  
Electro Optic ◽  
Tunable Frequency

This paper presents a new scheme of a cost-effective tunable millimeter-wave (MMW) frequency synthesizer based on an ultra-wideband electro-optic frequency comb. The architecture for the quasi-tunable millimeter-wave frequency synthesizer mainly consists of a compact ultra-wide flat electro-optic frequency comb and a multi-tone frequency generator, which only includes a quantum dot mode-locked laser, a LiNbO3 dual-driving Mach–Zehnder modulator (DD-MZM) and Uni-traveling-carrier photodiode (UTC-PD). MMW signals generated with a quasi-tunable frequency are experimentally demonstrated. The difference in power is obtained for the different frequencies. The linewidth of the quasi-tunable frequency signals is less than 273 Hz. In addition, the single side band (SSB) phase noise of the 25, 37.5, 50 and 75 GHz is measured as −115, −106, −102 and −95 dBc/Hz at an offset of 1 kHz, respectively. The proposed frequency synthesizer has ultra-low phase noise, quasi-tunable frequency and simple structure. The research results of the frequency synthesizer are applied for 5G+ transmission with radio wave working at K-band and V-band. The flexible, compact and robust MMW frequency synthesizer is suitable for the future of ultra-high capacity 5G+ communication.

Spin wave frequency comb generated through interaction between propagating spin wave and oscillating domain wall

2021 ◽  
Vol 534 ◽  
pp. 168046
Author(s):  
Zhen-wei Zhou ◽  
Xi-guang Wang ◽  
Yao-zhuang Nie ◽  
Qing-lin Xia ◽  
Guang-hua Guo
Keyword(s):  
Domain Wall ◽  
Spin Wave ◽  
Frequency Comb ◽  
Wave Frequency

scholarly journals Design of a Single Band Microstrip Patch Antenna for 5G Applications

2018 ◽  
Vol 7 (2.7) ◽  
pp. 532 ◽  
Author(s):  
R Siri Chandana ◽  
P Sai Deepthi ◽  
D Sriram Teja ◽  
N Veera JayaKrishna ◽  
M Sujatha
Keyword(s):  
Millimeter Wave ◽  
Patch Antenna ◽  
Return Loss ◽  
Dielectric Substrate ◽  
Microstrip Patch Antenna ◽  
Single Band ◽  
Wave Frequency ◽  
High Frequency Structure Simulator ◽  
Microstrip Patch ◽  
Simulation Purpose

This article is about a single band microstrip patch antenna used for the 5G applications. And this antenna is suitable for the millimeter wave frequency. The patch antenna design consists of 2 E shaped slots and 1 H shaped slot. These slots are loaded on the radiating patch with the 50 ohms microstrip feed line. For the simulation purpose, Rogers’s RT5880 dielectric substrate with relative permittivity of 2.2 and loss tangent of 0.0009 is used. The design and simulation of the antenna is done using HFSS (High Frequency Structure Simulator) software. The results are simulated for the parameters Return loss, VSWR, 3D Radiation pattern. The proposed antenna has a return loss of -42.4383 at 59 GHz millimeter wave frequency. 

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