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Due to dramatic increase in power demand for future mobile networks (LTE/4G, 5G), hybrid- (solar-/wind-/fuel-) powered base station has become an effective solution to reduce fossil fuel consumption. Such base stations are powered by small wind turbines (SWT) having nominal power in the range of 1.5–7.5 kW. In the context of the OPERA-Net2 European project, the study aims to quantify and possibly...
Hybrid-powered base transceiver stations (BTSs) have become an effective and attractive solution to reduce fossil fuel consumption, when power demand for future mobile networks (e.g. LTE/4G, 5G) dramatically increases. Such BTSs are powered by small wind turbines (SWTs) having nominal power in the range of 1.5–7.5 kW. Due to the close proximity between SWTs and BTSs, questions have been raised about...
In radio cellular networks, base transceiver station (BTS) powered by hybrid energy (solar / wind / fuel) has become an efficient and attractive solution to help to reduce the use of fossil fuel based energy. Such hybrid energy BTSs have been deployed in remote areas with small wind turbines (SWT) located on top of BTS pylon or on a separate mast. Because megawatt WTs or wind farm disturb various...
Base transceiver stations (BTS) combining hybrid energy, i.e. solar panels, fuel generators and small wind turbines (SWT), have been deployed in many regions of the world in recent years. Similarly to the radio impact of big WTs (alone or in wind farms) on the operations of radars, televisions, GPS, etc., questions have been raised about possible drawbacks due to close proximity between SWT and BTS...
The use of hybrid energy (fuel, wind and solar) can contribute to a reduction in both the carbon footprint and fuel consumption of base transceiver stations (BTS). Such solutions of BTSs combining solar panels, fuel generators and small wind turbines (SWT) have been deployed in many regions of the world in recent years. These SWTs typically have power levels ranging from 1.5 to 7.5 kW. Because of...
Because radar systems and TV reception are affected by wind turbines, the important development of hybrid-powered BTS (fuel, solar and wind energy) raises questions about possible radio impact between cellular radio signals and the small wind turbines (SWTs) that contribute to BTS supply. SWTs come in a wider variety of designs than bigger wind turbines. In the context of the OPERA-Net2 European project,...
An innovative LDS 4G antenna solution operating in the 698–960 MHz band is presented. It is composed of two radiating elements recombined in a single feed broadband antenna system using a diplexer. This circuit is realized thanks to lumped components, assembled directly on the plastic piece which supports the antenna. Corresponding measurements show a 260 MHz wide bandwidth (for S11@-6dB) and close...
An innovative LDS 4G antenna solution operating in the 698–960 MHz band is presented. It is composed of two radiating elements recombined in a broadband single feed antenna system using a multiband matching circuit design. Matching interfaces are synthesized thanks to lumped components placed on the FR4 PCB supporting the LDS antenna. Measurement shows a reflection coefficient better than −6 dB over...
In order to counteract the antenna impedance mismatch due to its interaction with the environment, one solution is to add an antenna tuner between the front-end module and the antenna. In this paper, we present the large signal measurement of a 4G integrated antenna tuner, previously presented in [1]. The tuner has been realized in STMicroelectronics 130 nm CMOS SOI technology and operates between...
In order to counteract the antenna impedance mismatch due to its interaction with the environment, one solution is to add an antenna tuner between the front-end module and the antenna. In this paper, we present the large signal measurement of a 4G integrated antenna tuner, previously presented in [1]. The tuner has been realized in STMicroelectronics 130 nm CMOS SOI technology and operates between...
In order to counteract the antenna impedance mismatch due to its interaction with the environment, one solution is to add an antenna tuner between the front-end module and the antenna. In this paper, we present the large signal measurement of a 4G integrated antenna tuner, previously presented in [1]. The tuner has been realized in STMicroelectronics 130 nm CMOS SOI technology and operates between...
In this paper, an innovative 4G antenna solution operating in the 698–960 MHz band, is presented. It is composed of two radiating elements recombined in a single feed antenna-system using an integrated power divider/combiner, synthesized thanks to five lumped components. Simulations using realistic SMD (Surface Mount Devices) components allow reaching a matching better than −6 dB, confirmed by measurement...
In order to counteract antenna impedance mismatch due to interaction with environment, one solution is to use a tuner between the front end module and the antenna. In this paper, a 4G antenna tuner integrated in STMicroelectronics 130 nm CMOS SOI technology and operating between 2500 MHz and 2690 MHz is described. Thanks to high power CMOS SOI Digitally Tunable Capacitances (DTCs), the proposed tuner...
In the context of future scientific oceanic observatories, this work concerns the development of a UHF radio antenna compatible with deep underwater transmissions. It aims to allow rapid transmission of large size files and real-time video. The solution under development is based on a radiating excitation isolated from the sea water by a buffer. The system presents several advantages: lack of sensitivity...
In the context of future scientific oceanic observatories, this work concerns the development of a UHF radio antenna compatible with deep underwater transmissions. It aims to allow rapid transmission of large size files and real-time video. The solution under development is based on a radiating excitation isolated from the sea water by a buffer. The system presents several advantages: lack of sensitivity...
In this paper we discuss about various modifications of classical coupled-lines narrow bandpass filter to obtain some frequency response improvement. The first modification concerns the broadening of the resonator strip-widths to improve their unloaded Q-factor. The second modification consists in replacing the in/out coupled lines section by tapped lines feeding. Finally a transmission zero is added...
A new topology of narrowband band-pass filter based on modification of classical tapped-line interdigital coupled lines filters is presented. From a sensitivity point of view, this new topology appears as very attractive when designing very narrowband filters. Theoretical and experimental results in coplanar technology are presented. The theoretical study is carried out by both a circuit modelling...
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