Concept
Radio masts and towers
Related publications (37)
Radio-Activities: Architecture and Broadcasting in Cold War Berlin
A historical and theoretical account of the city of Berlin from the intertwined perspectives of architecture, environmental, and media studies. In 1945, having occupied German territory, Soviet troops made two strategic moves: they dismantled the Deutschla ...
MIT Press2024Direct observations of X-rays produced by upward positive lightning
Marcos Rubinstein, Antonio Sunjerga, Farhad Rachidi-Haeri, Thomas Chaumont
X-rays have been observed in natural downward cloud-to-ground lightning for over 20 years and in rocket-triggered lightning for slightly less. In both cases, this energetic radiation has been detected during the stepped and dart leader phases of downward n ...
2024Infrastructures of Solidarity, Infrastructures of Totalitarism
Between 11 September 1973 and 11 March 1990, the silenced voices of many were dissolved into electromagnetic waves so they could be transmitted and heard in Chile. For sixteen years, the broadcasting house of the German Democratic Republic (GDR) – the Funk ...
2023Modeling lightning strikes to tall towers
In this chapter, we present a review of recent progress in the modeling of lightning strikes to tall structures. Since some tall structures are struck by lightning several tens of times per year, they can be used as ground-truth to measure and calibrate th ...
IET2023Improving Railway Track Coverage with mmWave Bridges: A Measurement Campaign
Andreas Peter Burg, Adrian Schumacher, Ruben Merz
Bringing cellular capacity into modern trains is challenging because they act as Faraday cages. Building a radio frequency (RF) corridor along the railway tracks ensures a high signal-to-noise ratio and limits handovers. However, building such RF corridors ...
ASSOC COMPUTING MACHINERY2021Adding Indoor Capacity without Fiber Backhaul: An mmWave Bridge Prototype
Andreas Peter Burg, Adrian Schumacher, Ruben Merz
Today, a large portion of mobile data traffic is consumed behind the shielding walls of buildings or in the Faraday cage of trains. This renders cellular network coverage from outdoor cell sites difficult. Indoor small cells and distributed antennas along ...
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC2021Options to correct local turbulent flux measurements for large-scale fluxes using an approach based on large-eddy simulation
The eddy-covariance method provides the most direct estimates for fluxes between ecosystems and the atmosphere. However, dispersive fluxes can occur in the presence of secondary circulations, which can inherently not be captured by such single-tower measur ...
2021In-body Antennas Design Based on Fundamental Limits of Obtainable Power Density
Anja Skrivervik, Zvonimir Sipus
In-body medical implants are one of the most promising solutions for increasing patient healthcare in the future. Many such devices already exist, however, each new design is a challenge due to size constraints and communication issues which arise due to s ...
IEEE2021Impedance and Admittance Formulas for a Multistair Model of Transmission Towers
This article discusses formulas for the surge/ characteristic impedance of vertical conductors. Calculated results of the surge impedance are compared with measured results on vertical conductors and transmission towers. The accuracy of the available time- ...
2020Calculation of the Grounding Resistance of Structures Located on Elevated Terrain
Marcos Rubinstein, Antonio Sunjerga
We present an analysis of the response of a grounding electrode located on the top of a mountain. Specifically, we derive an analytical solution for the low-frequency response of a hemispheric grounding electrode buried on the top of a cone-shaped mountain ...
2019