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1. Study of Diffraction at 30 GHz, 140 GHz, and 300 GHz

   Cheng, Chia-Lin; Kim, Seunghwan; Zajic, Alenka (July 2018, IEEE Proceedings of International Symposium on Antennas and Propagation)
2. Comparison of path loss models for indoor 30 GHz, 140 GHz, and 300 GHz channels

   C.-L. Chang, S. Kim (March 2017, Proceedings of the 11th European Conference on Antennas and Propagation (EuCAP))
3. Propagation Measurement System and Approach at 140 GHz-Moving to 6G and Above 100 GHz

   https://doi.org/10.1109/GLOCOM.2018.8647921  

   Xing, Yunchou; Rappaport, Theodore S. (December 2018, 2018 IEEE Global Communications Conference (GLOBECOM))

   Abstract: With the relatively recent realization that millimeter wave frequencies are viable for mobile communications, extensive measurements and research have been conducted on frequencies from 0.5 to 100 GHz, and several global wireless standard bodies have proposed channel models for frequencies below 100 GHz. Presently, little is known about the radio channel above 100 GHz where there are much wider unused bandwidth slots available. This paper summarizes wireless communication research and activities above 100 GHz, overviews the results of previously published propagation measurements at D-band (110-170 GHz), provides the design of a 140 GHz wideband channel sounder system, and proposes indoor wideband propagation measurements and penetration measurements for common materials at 140 GHz which were not previously investigated. 

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4. Digital Electronics as RFID Tags: Impedance Estimation and Propagation Characterization at 26.5 GHz and 300 GHz

   https://doi.org/10.1109/JRFID.2020.3015798  

   Cheng, Chia-Lin; Sangodoyin, Seun; Nguyen, Luong N.; Prvulovic, Milos; Zajic, Alenka (July 2020, IEEE Journal of Radio Frequency Identification)

   null (Ed.)
5. Dual-Band Antenna Array for 5.9 GHz DSRC and 28 GHz 5G Vehicle to Vehicle communication

   https://doi.org/10.1109/IEEECONF35879.2020.9330220  

   Govindarajulu, Sandhiya Reddy; Hokayem, Rimon; Alwan, Elias A. (July 2020, 2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting)

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   The Dedicated Short Range Communications (DSRC) band (5.85-5.925 GHz) allocated for vehicle-to-vehicle (V2V) communication provides limited opportunities for high speed data transfer. Alternatively, FCC plans to allocate millimeter-wave spectrum for 5G V2V communication. In this paper, we present a novel dual-band dual linearly-polarized antenna array for both DSRC and 28 GHz communications. For each band, we optimized antenna gain and number of elements to maximize range and data rate. The designed array has dual linear polarization and is fed with a simple quarter wave transformer. Due to large available connector’s size, a Wilkinson power divider is designed to combine adjacent elements. Infinite array simulation show that the array is well matched (S11 < -10 dB) from 5.85 to 6.48 GHz, and from 17.29 to 29 GHz. The realized gain at both frequency bands is neartheoretical. 

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