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Active antenna

About: Active antenna is a research topic. Over the lifetime, 2246 publications have been published within this topic receiving 26493 citations.


Papers
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Patent
13 Mar 2013
TL;DR: In this paper, an active antenna module consisting of a casing and an antenna device arranged in the casing is described, and the active antenna is convenient to install in the sky due to the fact that the hoisting holes and the grabbing structure positions are arranged on the casing, and maintainers can hold the module in maintenance.
Abstract: The utility model discloses an active antenna module and an active antenna and belongs to the field of communication. The active antenna module comprises a casing and an antenna device arranged in the casing. Hoisting holes are arranged on the casing, and grabbing structure positions are arranged on the casing. The active antenna module is convenient to install in the sky due to the fact that the hoisting holes and the grabbing structure positions are arranged on the casing, and maintainers can hold the module in maintenance. The active antenna module and the active antenna have the advantages of being simple in structure, convenient to operate, safe and reliable and ensuring that the active antenna module is safe to install, maintain and install and high in efficiency.

1 citations

Patent
31 Dec 2014
TL;DR: In this paper, the authors proposed a coupling strengthened type antenna (CFI) which comprises an active antenna arranged on the main board of the mobile apparatus, a metal coupling sheet adjacent to the active antenna, at least one metal radiation sheet and coaxial lines connecting the coupling sheet and the radiation sheets.
Abstract: The utility model relates to a coupling strengthened type antenna which is arranged inside a mobile apparatus. The coupling strengthened type antenna comprises an active antenna arranged on the main board of the mobile apparatus, a metal coupling sheet adjacent to the active antenna, at least one metal radiation sheet and coaxial lines connecting the coupling sheet and the radiation sheets. The coupling sheet can be electrically coupled to the active antenna so as to transmit transmitted and received signals to the active antenna. The radiation sheets are placed on the edges of the mobile apparatus and far away from metal members inside the mobile apparatus. The shielding of the metal members is alleviated. The antenna efficacy is enhanced. The metal-resistant capability is further improved.

1 citations

Patent
16 Jan 2008
TL;DR: In this article, the spatial modulation method in an MIMO system and a transceiving device using the method are provided to activate only one transmission antenna, thus the synchronization of transmission antennas is unnecessary, consequently transmission efficiency per unit hertz can be increased while inter-channel interference is removed from a receiving device.
Abstract: An SM(Spatial Modulation) method in an MIMO(Multiple Input Multiple Output) system and a transceiving device using the method are provided to activate only one transmission antenna, thus the synchronization of transmission antennas is unnecessary, consequently transmission efficiency per unit hertz can be increased while inter-channel interference is removed from a receiving device. A transmission device comprises as follows. A separator(211) inputs a signal including a lot of bit information, and separates the signal into an antenna bit block and a signal modulation bit block. A signal modulation coder(213) codes the signal modulation bit block into a signal modulation. An antenna index coder(212) codes the antenna bit block into an antenna index. Plural antennas(220,230) consist of an active antenna for sending the modulated signal during unit time and an inactive antenna which does not transmit the signal during the unit time.

1 citations

Proceedings Article
01 Mar 2019
TL;DR: In this article, a novel calibration technique for circularly polarized active antenna array with improved axial ratio and polarization-agile systems is presented, which can be implemented in off-site or on-site process depending on the system calibration and control design.
Abstract: This paper presents a novel calibration technique for circularly polarized active antenna array with improved axial ratio and polarization-agile systems. The proposed algorithm deals with the problem of calibration of active antenna arrays, proposing a calibration technique that can be implemented in off-site or on-site process depending on the system calibration and control design. The proposed calibration technique starts with the implementation of a complex circular polarization feeding network with the capability to change the response of each of the polarization circuits with signal attenuators. The expansion of equations of the proposed calibration algorithms is also presented. Finally, this algorithm deals with the compensation of mutual coupling effect and gain, phase and location errors.

1 citations


Network Information
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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
202148
2020113
2019123
201898
201789
2016102