Topic
Extremely high frequency
About: Extremely high frequency is a research topic. Over the lifetime, 6151 publications have been published within this topic receiving 52336 citations. The topic is also known as: EHF & millimeter wave.
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17 Jan 2021
TL;DR: In this paper, the authors quantified the ranging precision of a 79GHz FMCW radar sensor employing typical on-board antenna arrays and off-the-shelf crystal oscillator components.
Abstract: This paper quantifies the ranging precision of a 79GHz frequency-modulated continuous wave (FMCW) radar sensor employing typical on-board antenna arrays and off-the-shelf crystal oscillator components. Two radar boards are built using the same transceiver and phase-locked loop chips with external ±25ppm and ±1ppm crystal oscillators. The FMCW ranging precision in each case is measured and compared with that employing a laboratory test equipment as a reference signal. A range accuracy in microns regime is experimentally verified with the employed off-the-shelf crystal oscillators and without additional lens or horn antennas.
01 Jan 2013
TL;DR: In this paper, a novel conflguration with usage of millimeter-wave to transmit OFDM signal for utilizing broadband of optical flber is proposed and the performance of the system is assessed in terms of Signal to Distortion ratio (SDR) and symbol error rate (SER).
Abstract: Radio over Fiber (RoF) technology is considered as a promising technique for transmitting high data rate at efiective cost in the next generation network because of combination of Optical Fiber transmission that provides huge band width and mobility of radio network. However, to take the advantageous of the technology, the kind of carry frequency used is very important. At this paper, a novel conflguration with usage of Millimeter-Wave to transmit OFDM signal for utilizing broadband of optical flber is proposed. The performance of the system is assessed in term of Signal to Distortion ratio (SDR) and symbol error rate (SER).
Dissertation•
01 Jan 2001
01 Sep 2016
TL;DR: Based on the theory of beam waveguide (BWG) as well as polarization wire grid, a quasi-optical power synthesizer working at millimeter-wave band was presented in this article.
Abstract: The high power technology is widely applied in satellite communication and military systems. Based on the theory of beam waveguide(BWG) as well as polarization wire grid, we presents a quasi-optical power synthesizer working at millimeter- wave band. The designed power synthesizer can make electromagnetic wave traveling in two different ways with orthogonal polarization directions and combine them at a common output port. The designed quasi-optical synthesizer is fabricated and tested. The tested transmission efficiency of the two ways is above 83% and the designed synthesizer can working with a peak power of hundreds kilowattt(KW).
01 Jan 2007
TL;DR: A 60-GHz CMOS RFIC-on-chip slot antenna with rectangular-shaped aperture fed by the CPW line with an exciting stub is presented and the HFSS FEMbased 3-D full-wave EM solver is used for the design simulation.
Abstract: Recently, there exists an increasing demand for broadband multimedia applications for an everincreasing capacity of wireless networks. In particular, for dense local communications, the 60GHz band for wireless personal area network (WPAN) applications is of special interest to the short range communications due to its attenuation characteristic of atmospheric oxygen of 10 to 15 dB/km in a bandwidth of about 8 GHz centered around 60 GHz. It makes the 60-GHz band becomes an attractive alternative for the short-range wireless communications [1]. In order to pursue the RF system-on-chip (SoC) for the 60-GHz radio and the antenna integrated with low-cost monolithically integrated CMOS RF front-end circuitry, millimeter-wave CMOS RFICs and on-chip antenna have been studied [2-4]. In this paper, a 60-GHz CMOS RFIC-on-chip slot antenna is presented. The onchip antenna is fabricated with a 0.18-μm CMOS process. A rectangular-shaped aperture fed by the CPW line with an exciting stub is adopted to design the RFIC-on-chip antenna. The HFSS FEMbased 3-D full-wave EM solver is used for the design simulation.