Results 251 to 260 of about 57,490 (299)

Active transmitting phased antenna arrays

IEEE Transactions on Aerospace and Electronic Systems, 2005
The benefits of using transmitting phased array antennas for radar systems are examined. Accurate performance prediction for the transmitting phased array antennas requires theories describing both the antenna system and the power generation devices.
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HF broadcast transmitting antennas

1988 IEEE AP-S. International Symposium, Antennas and Propagation, 2003
An overview is presented of high-frequency (HF) broadcast transmitting antennas. For long-range broadcasting, high-power wideband directive antennas with slewing and beam shaping capabilities are needed. The design requirements, state-of-the-art, and the future trend of these antennas are discussed.
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Compact Medium Wave Transmitting Antennas

IEEE Transactions on Broadcasting, 2004
Increasing land costs, ever more restrictive land use regulations and the public's impression that towers are aesthetically distasteful, have led to a continuing interest in physically small transmitting antennas for use by broadcasters operating in the 535-1705 kHz medium wave band.
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Transmit diversity and spatial multiplexing in four-transmit-antenna OFDM

IEEE International Conference on Communications, 2003. ICC '03., 2004
This paper studies a practical design for achieving both spatial diversity and spatial multiplexing in an OFDM system with four transmit antennas. In a certain range of spectral efficiency, the proposed hybrid space-time block coding/multiple-input multiple-output (STBC/MIMO) design is found to be a good design choice based on performance and receiver ...
null Xiangyang Zhuang, F.W. Vook, S. Rouquette-Leveil, K. Gosse   +3 more
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Transmitting, receiving, and scattering properties of antennas

IEEE Antennas and Propagation Magazine, 2003
Udgivelsesdato ...
Andersen, Jørgen Bach, Vaughan, R. G.
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Transmit antenna diversity for wireless communications

Proceedings IEEE International Conference on Communications ICC '95, 2002
Increased demand for wireless communications in the workplace and for cellular communications has revitalized the concept of spaced antenna diversity. Both transmit and receive diversity are being explored to increase the capacity and improve the performance of wireless communication systems.
H.K. Mecklai, R.S. Blum
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Transmit antenna selection for MIMO systems

Proceedings of the IEEE 6th Circuits and Systems Symposium on Emerging Technologies: Frontiers of Mobile and Wireless Communication (IEEE Cat. No.04EX710), 2004
We propose a scheme combining transmit antenna selection and maximal-ratio combining (MRC) at the receiver. In this scheme L antennas are chosen for transmission among all available transmit antennas N and maximal-ratio combining is performed at the receiver side.
null Xu Kai, null Luo Tao, null Yin Chang-chuan, null Yue Guang-xin   +3 more
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Circularly Polarized Antenna for Transmitting Application

IETE Journal of Research, 1989
Broadband Circularly Polarized Diagonal Horn Antennas, capable of high power handling working over frequency 2.4 GHz through 12.4 GHz have been designed and developed. Low loss, high strength radome has been used to protect the antennas. The diagonal horn possesses almost perfect circular symmetry beam; thus resulting in low axial ratio off the antenna
Ram Pal, V Rengachari, K K Srivastava
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Spinning magnet antenna for VLF transmitting

2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017
If we spin or wiggle a permanent magnet, it acts like an electrically small loop antenna, generates electromagnetic wave. In this paper we present our study on a spinning magnet antenna for VLH transmitting. Based on our simulation study, a spinning magnet antenna array is proposed.
Skyler Selvin, M.N. Srinivas Prasad, Yikun Huang, Ethan Wang   +3 more
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Characteristics of TV transmitting batwing antennas

IEEE Transactions on Antennas and Propagation, 1984
All of the characteristics of the batwing radiator, which is the heart of the superturnstile antenna system, are theoretically calculated by using the moment method. The matching condition is obtained on the basis of the characteristics in the cases of changing the shape of the jumper and of changing the distance between the support mast and the ...
H. Kawakami, G. Sato, R. Masters
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