Results 111 to 120 of about 36,878 (167)
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Should one focus on Ka-band or look beyond Ka-band?
IET Seminar on Beyond Ka-Band: Meeting the Communication Bandwidth Requirements of the Future, 2011Presents a collection of slides covering the following topics: Ka-band FSS; MSS satellite service; Ka-band satellite system; V-band satellite systems; Q-band satellite systems; Q-V band attenuation; civil Ka-band GEO broadband systems; Ka-band downlink spectrum; and ITU frequency allocations. (25 pages)
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Ka-BAND PROPAGATION RESEARCH USING ACTS
International Journal of Satellite Communications, 1996The congestion of the radio spectrum below about 18 GHz is causing a rush of interest in the 20/30- GHz band. Due to the shorter wavelength of these frequencies, the atmosphere, especially rain, greatly influences the transmission of signals between earth/space stations. The slant path effects in the Ka region of the radio spectrum are addressed and an
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2019 49th European Microwave Conference (EuMC), 2019
In this paper, we show the latest development for an active transmit radiator array in Ka-band, consisting of a modular passive frontend and an active part using solid state power amplifiers (SSPAs) with amplitude and phase control. To facilitate the integration of future very large array antennas, the passive frontend has been manufactured using a ...
Philipp Kohl +4 more
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In this paper, we show the latest development for an active transmit radiator array in Ka-band, consisting of a modular passive frontend and an active part using solid state power amplifiers (SSPAs) with amplitude and phase control. To facilitate the integration of future very large array antennas, the passive frontend has been manufactured using a ...
Philipp Kohl +4 more
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2015
Abstract : The design of a 30-channel Ka band receiver is described in detail including both the radio frequency (RF) down-conversion architecture and the digital signal processing platform to be used. The system, which is composed entirely of commercial-off-the-shelf (COTS) components, is capable of covering 44% of the entire Ka band including the ...
Eric D. Adler +2 more
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Abstract : The design of a 30-channel Ka band receiver is described in detail including both the radio frequency (RF) down-conversion architecture and the digital signal processing platform to be used. The system, which is composed entirely of commercial-off-the-shelf (COTS) components, is capable of covering 44% of the entire Ka band including the ...
Eric D. Adler +2 more
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3rd International Conference on Satellite Communications (IEEE Cat. No.98TH8392), 2002
We present results of the design and fabrication of Ka-band LNA MIC, for radioastronomical equipment. The parameters of the amplifier are: working band of frequencies 33-36 GHz, noise figure 20 dB, /spl Delta/gain 8 dBm. The amplifier is intended for working in hermetically sealed equipment. The amplifier size is 21.5/spl times/12/spl times/5 mm. The
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We present results of the design and fabrication of Ka-band LNA MIC, for radioastronomical equipment. The parameters of the amplifier are: working band of frequencies 33-36 GHz, noise figure 20 dB, /spl Delta/gain 8 dBm. The amplifier is intended for working in hermetically sealed equipment. The amplifier size is 21.5/spl times/12/spl times/5 mm. The
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2015 16th International Conference on Electronic Packaging Technology (ICEPT), 2015
Detector is one of the conventional components of the circuit system, which is usually used in scalar network analyzer, six-port network, and microwave transient receiver system. In this paper, based on the theoretical analysis of detector, the Ka-band millimeter-wave pulse detector is designed.
Sha Li, Huan Xin, Yawei Li
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Detector is one of the conventional components of the circuit system, which is usually used in scalar network analyzer, six-port network, and microwave transient receiver system. In this paper, based on the theoretical analysis of detector, the Ka-band millimeter-wave pulse detector is designed.
Sha Li, Huan Xin, Yawei Li
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LHCP/RHCP reconfigurable transmitarray in Ka-band
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2015In this contribution, we propose the design of a circularly-polarized reconfigurable transmitarray based on a 1-bit unit-cell (i.e. with two phase states, 0° and 180°) operating in linear polarization. Applying the sequential rotation technique, the possibility to switch between the two circular (LHCP/RHCP) polarizations will be presented.
Di Palma, Luca +5 more
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Ka-band services and technologies
IEE Colloquium on Current Developments in INTELSAT, 1997This paper summarizes the potential interactive multimedia services to be offered by future Ka-band systems. The focus is on examining the nature and characteristics of the potential end-user services and system configurations. In addition, the Ka-band system technologies facilitating deployment of these services are reviewed, strongly indicating that ...
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Materials Science Forum, 2018
In this thesis, the RF front-end was done at K/Ka (18-27 GHz/26.5-40 GHz) bands used for satellite communication and satellite TV [1]. In this study, vertical polarized signal transmission and horizontal polarized signal reception were performed. The design is set to be compatible with TURKSAT 4B [2]. RF front-end is consist of an offset dish providing
Torpi, Hamid, Mecidoğlu, Harun
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In this thesis, the RF front-end was done at K/Ka (18-27 GHz/26.5-40 GHz) bands used for satellite communication and satellite TV [1]. In this study, vertical polarized signal transmission and horizontal polarized signal reception were performed. The design is set to be compatible with TURKSAT 4B [2]. RF front-end is consist of an offset dish providing
Torpi, Hamid, Mecidoğlu, Harun
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Characteristics of microfabricated rectangular coax in the Ka band
Microwave and Optical Technology Letters, 2004AbstractMiniaturerectangularcoaxial transmission line (with a 300 × 300 μm outer conductor) is simulated, fabricated, and tested up to the Ka band. It is made by the electrochemical fabrication (EFAB™) of nickel such that the center conductor is supported primarily by ≈λ/4 stubs that also establish a resonant passband. The minimum insertion loss of a 1.
Brown, Elliott R. +7 more
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