Antennas (Electronics) - Measurement
Intermodulation Distortion and Compression Point Measurement of Active Integrated Antennas Using a Radiative Method
... a measurement procedure allowing the characterization of active integrated antennas in terms of intermodulation distortion and compression point inside of a parallel plate cell is ...radiative ...
8
Electronics-Based Free-Space Terahertz Measurement using Hemispherical Lens Antennas
... THz measurement setup featuring an electronic-based technique and miniature additive- manufactured hemispherical lens antennas was introduced in this ...lens antennas, the requirements of using many ...
11
Improved Measurement Method of Circularly Polarized Antennas Based on Linear Component Amplitudes
... (CP) antennas have many advantages such as insensitivity to polarization locations, elimination of the signal Faraday rotation effect caused by the ionosphere, and strong anti-interference ...the ...
11
Measurement and Computational Modeling of Radio-Frequency Electromagnetic Power Density Around GSM Base Transceiver Station Antennas
... both measurement and ...direct measurement were slightly higher than those in simulation, and this is attributed to the unstable near-fields in the vicinity of ...between measurement values and ...
8
Measurement of the Influence of Antennas on Radio Signal Propagation in Underground Mines and Tunnels
... of antennas on radio signal propagation in tunnels and underground ...propagation measurement results in a concrete tunnel and underground mines using antenna types with various radiation patterns, ...
12
A time domain spherical near-field measurement facility for UWB antennas employing a hardware gating technique
... The redesigned pulse generator is an upgrade of the one de- scribed in Leibfritz et al. (2007). It is based on digital emitter coupled logic (ECL) circuits of the GigaComm series from ONSemiconductor used to switch a ...
8
Impedance Measurement of Millimeter Wave Metamaterial Antennas by Transmission Line Stubs
... A new method to measure the impedance of metamaterial antenna, useful in device matching in a functional circuit, was developed. The method uses a setup made by a very high frequency vector network analyzer and an ...
10
Implantable antennas for biomedical applications
... The implantable antenna works with an external device that is normally controlled by a physician. Most of the proposed implantable antennas were designed and evaluated to obtain this function at a distance of over ...
244
Design of Offset Dual-Reflector Antennas for Improving Isolation Level Between Transmitter and Receiver Antennas
... this measurement, both separation wall without serrated edge and separation wall with rectangular structure show better performance than the separation wall with serrated ...
11
Log-Periodic Loop Antennas
... of antennas and fluctuates widely over the gain ...impedance measurement is indispensable in practice and the measured results will be presented in Section ...
124
Calibration of Time-Domain Transfer Function for UWB Antennas Based on Antennas Factors in Frequency Domain
... the measurement system is ...domain measurement results of an ultra-wideband ...other measurement components in the system have only the magnitude data, listed in their specifications provided by the ...
6
Investigation of Vector Antennas and their Applications
... The degrees of freedom analysis in chapter 2 assumed that the radiation patterns of antenna elements are ideal and that they radiate independently of each other. In a prac- tical system, however, the radiation patterns ...
70
Nonlinear characterisation of reconfigurable antennas
... reconfigurable antennas has motivated the work described in this ...reconfigurable antennas should not be ignored and nonlinearity measurements should be performed to ensure the nonlinear performance is ...
61
$1 SRD Antennas. Keywords. Introduction. Overview. By P. M. Evjen. PCB antenna design Body-worn and handheld antennas. Antenna theory Small antennas
... The antennas were measured with a network analyser and matched to 50 ...the measurement the circuit board was held in the hand as it would be under normal ...
18
UWB antennas for wireless communications
... In this Chapter, a novel UWB-MIMO antenna has been proposed for wireless applications over the frequency band from 2.3 to 12 GHz. The size of the proposed antenna is 45 mm by 60 mm, about 30% smaller than the one ...
196
Introduction to Ultra-Wideband Antennas
... UWB antennas: they are typically “multi-narrowband” antennas instead of antennas optimized to receive a single coherent signal across their entire operating ...
13
Analysis of Arrays of Printed Strip Dipole Antennas and Broadband Antennas of Six Series Fed Strip Dipoles
... Single strip dipoles printed on electrically thin, low permittivity substrates behave similarly to ordinary dipoles, and they have often been designed based on experimental trial and error [11, 12]. However, when dipoles ...
8
Multiband Fractal-Like Antennas
... Immense growth in wireless communication system demands more complex and sophisticated systems along with more operating bands. In mobile communication systems many different frequency bands are needed such as global ...
16
Filtering Antennas: Synthesis and Design
... synthesize and design the new printed Bandpass Filtering Antenna. For the purpose of miniaturization and enhancing the overall performance of the circuit, a multifunction module is designed. It performs filtering and ...
6
Small Antennas for High Frequencies
... The radiator can theoretically be of any shape. Figure below shows a variety of shapes which have been used in planar antenna design. Among these, elliptical planar antennas are of importance to planar antenna ...
23