L band

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

L-band TR assembly

Abstract: The utility model relates to an L-waveband TR assembly. Compared with the traditional structure, the structure is simple; aiming at the characteristic of low frequency of an L waveband, an amplitude limiter in an L-band TR assembly is improved. According to the amplitude limiter, a relatively simple circuit is adopted to form the amplitude limiter, only four diodes used for amplitude limiting andcapacitors and inductors used for matching are adopted, a good amplitude limiting effect and return loss can be obtained under the L wave band, and therefore the effect of reducing the cost on the premise that L wave band signal receiving and transmitting are met is achieved.

Detection and localization of L-band satellites using an antenna array

Abstract: Argus is an experimental L-band radio telescope, consisting of a large number of low-gain antennas networked together to facilitate detection and localization of astronomical transients over the entire sky instantaneously. In this paper, we report an experiment in which we used Argus to observe man-made satellites, namely the 1691 MHz WEFAX signal from the GOES-12 satellite and the combined 1575.42 MHz signal from the US GPS constellation. This is a useful interim step to astronomical observations because WEFAX and GPS are strong relative to astronomical sources, yet weak enough to provide a meaningful test of the ability to operate with high sensitivity in field conditions.