Results 1 to 10 of about 30,485 (224)
A Low VSWR 2SB Schottky Receiver [PDF]
IEEE Transactions on Terahertz Science and Technology, 2011 A novel high performance waveguide integrated sideband separating (2SB) Schottky receiver operating in the 320-360 GHz band is presented. The unique receiver design is based on a core of two subharmonic Schottky diode mixers with embedded LNA's with a minimum noise figure of 1.8 dB, fed by LO and RF quadrature hybrids.
Peter J. Sobis, Anders Emrich, Jan Stake
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A Low VSWR and High Efficiency Waveguide Feed Antenna Array [PDF]
Wireless Communications and Mobile Computing, 2018 A low VSWR and high efficiency antenna array operating in the Ku band for satellite communications is presented in this paper. To achieve high radiation efficiency and broad enough bandwidth, all‐metal radiation elements and full‐corporate waveguide feeding network are employed.
Zhao Xiao-Fang +4 more
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CIRCULAR FRACTAL MONOPOLE ANTENNA FOR LOW VSWR UWB APPLICATIONS [PDF]
Progress In Electromagnetics Research Letters, 2008 A new circular ultra-wideband fractal monopole antenna based on descartes circle theorem (DCT) with elliptical iterations is presented. The proposed fractal design is optimized for return loss below −15 dB. The basic structure is slightly modified to ensure an overall smooth current distribution limited by the junction point nature of the fractal ...
Salman Naeem Khan +3 more
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Simulation and Measurements of VSWR for Microwave Communication Systems
International Journal of Communications, Network and System Sciences, 2012 Nowadays, microwave frequency systems, in many applications are used. Regardless of the application, all microwave communication systems are faced with transmission line matching problem, related to the load or impedance connected to them. The mismatching of microwave lines with the load connected to them generates reflected waves.
Bexhet Kamo +3 more
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Measurement methods and mathematical model of main characteristics of waveguide-coaxial connectors
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2021 Modern complex microwave radio electronic systems may use functional devices implemented on different types of transmission lines. In order to connect such devices to each other to form antenna feed system, the following three types of special connectors
Eduard Glushechenko
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Analyzing Troubleshooting of BTS Transmit Power and 4G LTE Coverage Area via VSWR Value Measurement
Andalas Journal of Electrical and Electronic Engineering Technology, 2023 The Voltage Standing Wave Ratio (VSWR) serves as a comparative measure between transmitter and receiver voltages, impacting site transmit power. VSWR values at a Radio Base Station (RBS) are evident in feeder cable losses, jumpers, combiners, and radio ...
Nadila Khairanisa +3 more
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Design of an S-band Ultra-low-noise Amplifier with Frequency Band Switching Capability [PDF]
Journal of Electrical and Computer Engineering Innovations, 2017 In this paper, an ultra-low-noise amplifier with frequency band switching capability is designed, simulated and fabricated. The two frequency ranges of this amplifier consist of the 2.4 to 2.5 GHz and 3.1 GHz to 3.15 GHz frequency bands.
M. Shakibmehr, M. Lotfizad
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Jurnal Jaringan Telekomunikasi, 2022 Many types of antennas can be used for digital TV receivers; in this article we try to design a double biquad antenna. This is due to a simple form, easy to make, a wide beamwidth.
Waluyo Waluyo +2 more
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Disain dan Implementasi Atenna BOW TIE Pada Frekuensi 750 MHz Untuk Aplikasi Penerima TV
Jurnal Jaringan Telekomunikasi, 2020 Antena yang bekerja pada band UHF , banyak jenisnya antara lain : antena dipole 1/2l, antena Yagi-Uda array, antena log periodik dan sebagainya. Antena jenis ini, dimensi fisiknya disesuaikan dengan panjang gelombang.
waluyo +2 more
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RADIANT SYSTEM BASED ON COLD PLASMA [PDF]
Радиофизика и электроника, 2016 The actual problem of studying the basic properties and searching for methods of improving the plasma radiator array, which is similar to the array of metal or dielectric antennas, has been considered. This problem is not sufficiently covered in the well-
V. V. Ovsyanikov
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