mm-wave-millimeter wave

millimeter wave


The global bandwidth shortage facing wireless carriers has motivated the exploration of underutilized millimeter wave (mm- wave ) frequency spectrum for future broadband cellular communication networks. However, there is little known about mmwave propagation in

Short-range wireless communications for next-generation networks: UWB, 60 GHz millimeter – wave WPAN, and ZigBee
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This article presents standardization, regulation, and development issues associated with shortrange wireless technologies for next-generation personal area networks (PAN). Ultra- wideband (UWB) and 60 GHz millimeter – wave communication technologies promise

A radio-over-fiber system with a novel scheme for millimeter – wave generation and wavelength reuse for up-link connection
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We proposed and experimentally demonstrated a novel scheme to generate an optical millimeter – wave and realized wavelength reuse for uplink connection in a radio-over-fiber system. We employed an optical interleaver to separate the spectrum of the double This paper studies antenna-on-chip (AoC) and antenna-in-package (AiP) solutions to highly- integrated millimeter – wave (mmWave) devices for wireless communications. First, the background, regulations, standard, and applications of 60-GHz wireless communications

Path loss models for 5G millimeter wave propagation channels in urban microcells.
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Measurements for future outdoor cellular systems at 28 GHz and 38 GHz were conducted in urban microcellular environments in New York City and Austin, Texas, respectively. Measurements in both line-of-sight and non-line-of-sight scenarios used multiple

Enabling device-to-device communications in millimeter – wave 5G cellular networks
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Millimeter – wave communication is a promising technology for future 5G cellular networks to provide very high data rate (multi-gigabits-persecond) for mobile devices. Enabling D2D communications over directional mmWave networks is of critical importance to efficiently use The application of molecular beam epitaxy(MBE) and X-ray lithography for the fabrication of monolithic integrated millimeter – wave devices on high-resistivity siticon has been investigated. Process compatibility and the retention of fdgb-resistivity characteristics were

Design of millimeter – wave CMOS radios: A tutorial
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This paper deals with the challenges in the design of millimeter – wave CMOS radios and describes circuit and architecture techniques that lead to compact, low-power transceivers. Candidate topologies for building blocks such as low-noise amplifiers, mixers, oscillators

Millimeter – wave CMOS circuit design
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We have developed a 27-and 40-GHz tuned ampli-fier and a 52.5-GHz voltage-controlled oscillator using 0.18-m CMOS. The line-reflect-line calibrations with a microstrip-line structure, consisting of metal1 and metal6, was quite effective to extract the accurate

Full- wave modeling and automatic equivalent-circuit generation of millimeter – wave planar and multilayer structures
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A general method for the automated extraction of lumped-element equivalent circuits for linear passive reciprocal distributed microwave circuits from time-domain scattering signals is presented. The proposed method autonomously generates network topology as well as

Millimeter – wave substrate integrated waveguides and filters in photoimageable thick-film technology
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This paper presents the design and fabrication of sub-strate-integrated waveguides and filters for use at millimeter – wave frequencies. The components described are fabricated using photoimageable thick-film materials. Measurements on-and-band waveguide-to The possibility of mode locking a semiconductor laser at millimeter wave frequencies approaching and beyond 100 GHz was investigated theoretically and experimentally. It is found that there are no fundamental theoretical limitations in mode locking at frequencies

Key elements to enable millimeter wave communications for 5G wireless systems
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Current cellular spectrum at below 3 GHz bands is experiencing severe shortage and cannot keep up with the dramatic proliferation of mobile traffic in the near future, requiring the search for innovative solutions to enable the 5G era. mmWave communications, with a

Millimeter – wave properties of the atmosphere: Laboratory studies and propagation modeling
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2. LABORATORY STUDIES OF MOIST AIR ABSORPTION AT 138 GHz 3 2.1 Experimenta1 Arrangement 2.3 water Vapor and Moist Air Attenuation Results.. 13 APPENDIX A: THE REFRACTIVE INDEX OF THE NEUTRAL ATMOSPHERE FOR FREQUENCIES

Leaky CPW-based slot antenna arrays for millimeter – wave applications
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A uniplanar leaky- wave antenna (LWA) suitable for operation at millimeter – wave frequencies is introduced. Both unidirectional and bidirectional versions of the antenna are presented. The proposed structure consists of a coplanar waveguide fed linear array of closely spaced This letter presents the design and implementation of a 60-GHz millimeter – wave RF- integrated-circuit-on-chip bandpass filter using a 0.18-µm standard CMOS process. A planar ring resonator structure with dual-transmission zeros was adopted in the design of this

A 35-GHz beam waveguide system for the millimeter – wave radar
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II The millimeter – wave radar is a broadband, dual-polarized Cassegrain system operating in the Ka band (35 GHz) and W band (95 GHz). To upgrade system sensitivity and bandwidth, we replaced the 35-GHz microwave system with a reflecting beam waveguide (BWG), which

Fabrication and characterization of micromachined rectangular waveguide components for use at millimeter – wave and terahertz frequencies
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The fabrication and characterization of micro-machined reduced-height air-filled rectangular waveguide components suitable for integration is reported in this paper. The lithographic technique used permits structures with heights of up to 100 m to be successfully constructed

Millimeter – wave frequency tripling based on four- wave mixing in a semiconductor optical amplifier
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An approach to generating a frequency-tripled millimeter – wave (mm- wave ) signal based on four- wave mixing (FWM) in a semiconductor optical amplifier (SOA) is experimentally demonstrated. In the proposed system, two phase-correlated optical wavelengths generated

Efficient generation of guided millimeter – wave power by photomixing
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A 70-GHz bandwidth commercial photodiode has been coupled to W-band waveguide and used as a photomixing source from 75 to 170 GHz. Maximum power conversion efficiency of 1.8% was obtained at 75 GHz, where an optical input of+ 10 dBm yielded a nonsaturated



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