scispace - formally typeset
Search or ask a question
Topic

L band

About: L band is a research topic. Over the lifetime, 674 publications have been published within this topic receiving 4570 citations.


Papers
More filters
Proceedings ArticleDOI
Ying Wu1, Chengjin Jin1, Jianping Fan1, Xiaoli Zhao1, Lei Yu1, B. Du 
01 Aug 2016
TL;DR: In this paper, the blue print of the FAST PAF development and corresponding scientific goals are introduced, as well as the progress has been made in these PAFs, and a detailed description of the progress can be found.
Abstract: Phased array feed (PAF) is an emerging technology which can greatly improve the survey speed of telescopes. As a world-class radio telescope, the Five-hundred-meter Aperture Spherical radio Telescope (FAST) is also trying to enhance its observation capability and open up new scientific studies at several frequency bands by PAFs. At the first partof this paper, the blue print of the FAST PAFs development and corresponding scientific goals are introduced, as well as the progress has been made in these PAFs.

7 citations

Proceedings ArticleDOI
22 Sep 2014
TL;DR: In this article, the Focal L-band Array for the Green Bank Telescope (FLAG) is described and progress on the cryogenic front end receiver system and real-time digital signal processing back end is reported.
Abstract: A collaboration has been underway for the last several years to develop an L-band multipixel phased array feed for the Green Bank Telescope. These efforts will culminate in the deployment of a new wide-field observing instrument, Focal L-band Array for the GBT (FLAG).We report on progress on the cryogenic front end receiver system and real-time digital signal processing back end.

7 citations

Proceedings ArticleDOI
C. Barnes1, W. Bertram, M. Cowan
01 Jan 1964

7 citations

Proceedings ArticleDOI
01 Nov 2010
TL;DR: In this article, a simple design of printed dipole antenna without flared arms and with shaped ground plane is presented using which −10 dB return loss band width as high as 41% in L band and below is achieved, a feat hitherto unachieved.
Abstract: A printed dipole antenna, in spite of its numerous advantages in terms of size, weight, aerodynamic drag etc. suffers from the inherent disadvantage of incompatibility with wide band operation. Both microstrip dipoles and printed dipoles are resonant antennas but printed dipoles are often used to replace microstrip dipoles since they offer somewhat better band width. However, the maximum band width reported to be obtained is not sufficient for many present day high-speed data applications like streaming video, real time navigation and control links, as also applications like medical imaging, broad band EMI measurements etc. A novel yet simple design of printed dipole antenna without flared arms and with shaped ground plane is presented here using which −10 dB return loss band width as high as 41% in L band and below is achieved, a feat hitherto unachieved. By flaring its arms, the same antenna provides −10dB band width as high as 51% in the same band of frequency. Antennas are designed to operate in L band and below so that these can be used in GSM and CDMA wireless applications. Measured results of both antennas show good agreement with the simulated results.

7 citations

Proceedings ArticleDOI
24 Jun 1991
TL;DR: In this paper, the authors describe an antenna system for a proposed multiband communication satellite utilizing five frequency bands, namely, Ka (30/20 GHz), Ku (14/12 GHz), C (6/4 GHz), S (2.6/2.5 GHz), and L (1.6 /1.1 GHz).
Abstract: The authors describe an antenna system for a proposed multiband communication satellite utilizing five frequency bands. Ka (30/20 GHz), Ku (14/12 GHz), C (6/4 GHz), S (2.6/2.5 GHz), and L (1.6/1.5 GHz). Seven beam configurations have been created, including three multibeams, three shaped beams, and a circular single beam. The authors present feasibility studies on three kinds of frequency selective surfaces, the key technology for constructing this satellite. One is a novel frequency-selective subreflector with two separate focal feed positions. The others are planar frequency selective surfaces specified with low losses and wide reflection bandwidths. Measured data suggest the reliable achievement of low-loss frequency sharing and the possibility of realizing an advanced communication satellite. >

7 citations

Network Information
Related Topics (5)
Radar
91.6K papers, 1M citations
89% related
Pixel
136.5K papers, 1.5M citations
83% related
Antenna (radio)
208K papers, 1.8M citations
76% related
Optical fiber
167K papers, 1.8M citations
76% related
Amplifier
163.9K papers, 1.3M citations
76% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20232
202222
202134
202036
201944
201838