Results 251 to 260 of about 71,984 (299)

Beam switchable radiosonde receiver antennas

AEU - International Journal of Electronics and Communications, 2020
Abstract In this paper, radiosonde receiver antennas are investigated as one of the most important parts of meteorological variables sounding. The specifications of the antenna is studied for receiving radiosonde signals from all directions and from different distances.
F. Ghorbani, A. Abdi, A. Sahraei, M. Fallahzadeh, H. Aliakbarian, S. Radiom   +5 more
openaire   +1 more source

A plasma receiving dipole antenna

Plasma Physics Reports, 2010
Results from experimental studies of a short-wave plasma dipole transceiver antenna are presented. The efficiency of the plasma receiving antenna is estimated, and the optimal frequency range for excitation and reception under the given experimental conditions is determined.
I. M. Minaev, N. G. Gusein-zade, K. Z. Rukhadze   +2 more
openaire   +1 more source

Multi-GNSS Receiver Antenna Calibration

2020
Global Navigation Satellite Systems (GNSS) are not only widely used for precise positioning, navigation and timing but also for establishing of terrestrial reference frames for geospatial applications, such as land and water management. The quality of GNSS carrier phase measurements depends on the knowledge about the location of the exact electrical ...
Kröger, Johannes, Kersten, Tobias, Breva, Yannick, Schön, Steffen   +3 more
openaire   +1 more source

New DBS receiver antennas

23rd European Microwave Conference, 1993, 1993
High gain and low noise characteristics are strongly required for DBS receiving antennas; reflector antennas have been the most popular. Recently, various kinds of flat array antennas are proposed and used as commercial products. This paper describes the state of the art of DBS receiving flat arrays.
openaire   +1 more source

The Antenna Properties of Optical Heterodyne Receivers

Applied Optics, 1966
An optical heterodyne receiver is, in effect, both a receiver and an antenna. As an antenna it has an effective aperture or capture cross section A(R)(Omega) for plane wave signals arriving from any direction Omega. The wavefront alignment between signal and local-oscillator (LO) beams required for effective optical heterodyning may be summarized in ...
openaire   +2 more sources

FM-Receiver with Adaptive Antenna

SAE Technical Paper Series, 1990
<div class="htmlview paragraph">A new type of FM receiving system is introduced which eliminates most of the well known typical distortions due to the properties of the mobile radio channel.</div> <div class="htmlview paragraph">The system consists of several antenna elements mounted on a car and a special receiver which combines ...
Harald Bochmann, Kurt Wiedemann
openaire   +1 more source

Conformal Impulse Receive Antenna Arrays

2005
Abstract : This report addresses the design and fabrication of a prototype transient multi-element planar array operating in an impulse regime. The objective is to develop a conformal impulse "timed-array" antenna, operating in a transient regime and covering a wide frequency band spanning an approximately 200 MHz-2 GHz range. Under this Phase-I effort,
M. D. Abdalla, M. C. Skipper, K. F. Casey, D. V. Giri   +3 more
openaire   +1 more source

An antenna correlation measuring receiver

6th International Conference on Radio Receivers and Associated Systems, 1995
The paper presents a simple antenna correlation measuring receiver that is capable of measuring the complex cross-correlation of the signals produced by two receiving antennas connected to it. To measure complex correlation, information about the amplitude and phase of each signal is required.
openaire   +1 more source

Optical Antenna Gain 2:Receiving Antennas Errata

Applied Optics, 1974
J J, Degnan, B J, Klein
openaire   +2 more sources

Received Voltage Versus Antenna Height

IEEE Transactions on Electromagnetic Compatibility, 1969
Relative received voltage versus antenna height above ground is a function of field intensity height gain and the height dependent antenna effective length and impedance. The results of an empirical investigation of relative received voltage versus antenna height using typical EMI antennas in the frequency range 2.5 MHz to 1 GHz are presented.
openaire   +1 more source