Results 1 to 10 of about 13,233 (186)

Measurement methods and mathematical model of main characteristics of waveguide-coaxial connectors

open access: yesTekhnologiya 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
doaj   +1 more source

Analyzing Troubleshooting of BTS Transmit Power and 4G LTE Coverage Area via VSWR Value Measurement

open access: yesAndalas 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
doaj   +1 more source

A Low VSWR 2SB Schottky Receiver [PDF]

open access: yesIEEE 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
openaire   +1 more source

Design of an S-band Ultra-low-noise Amplifier with Frequency Band Switching Capability [PDF]

open access: yesJournal 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
doaj   +1 more source

Analysis of a low-profile, dual band patch antenna for wireless applications

open access: yesAIMS Electronics and Electrical Engineering, 2023
A dual-band google lens logo-based patch antenna with defected ground structure was designed at 5.3 GHz for wireless applications and 7.4 GHz for wi-fi application.
M. Naveen Kumar   +4 more
doaj   +1 more source

Disain dan Implementasi Atenna BOW TIE Pada Frekuensi 750 MHz Untuk Aplikasi Penerima TV

open access: yesJurnal 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
doaj   +1 more source

RADIANT SYSTEM BASED ON COLD PLASMA [PDF]

open access: yesРадиофизика 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
doaj   +1 more source

Design and build a digital TV receiver double biquad antenna for the Greater Malang region and its surroundings

open access: yesJurnal 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
doaj   +1 more source

DESIGN OF A DUAL-BAND REJECTION PLANAR ULTRA-WIDEBAND (UWB) ANTENNA

open access: yesJournal of Engineering and Sustainable Development, 2022
This article discusses about a small Ultra-wideband fix radio wire with two score channels. Spaces are embedded into the fix of the receiving wire to give WiMAX and WLAN recurrence band dismissal.
Sahar K. Hassan   +2 more
doaj   +1 more source

UTHM water quality classification based on sub index [PDF]

open access: yes, 2020
River or stream at their source is unpolluted, but as water flow downstream, the river or lake is receiving point and non-point pollutant source. Ammoniacal nitrogen (NH3- N) and suspended solids (SS) strongly influences the dynamics of the dissolved ...
Johari, A. H.   +2 more
core   +1 more source

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