Antenna system for receiving circularly polarized electromagnetic (EM) radiation from a plurality of satellites in a global navigation satellite system (GNSS). The antenna system comprises a high capacitive impedance surface (HCIS) ground plane 1206 having a lateral dimension 1201 and a directional ...
Broadband convex impedance ground planes for multi-system GNSS reference station antennasAntennaGround planeMultipathImpedanceChoke ringPinCommon choke ring ground planes are known to contribute to undesirable antenna pattern narrowing in the elevation plane which is associated with difficulties of tracking ...
1001011 - On/Off Ground GNSS (GPS/Glonass/BeiDou/Galileo) PCB antenna, PP-KYAV-1001011C, STMicroelectronics
resulting in a point-spread function of 1μrad at the telescope focal plane (without atmosphere). For direct-detected interplanetary lasercom applications, a near-diffraction-limited telescope with about 1–λoptics and corresponding 10-μrad point-spread function at the telescope focal plane will ...
Comtech Telecommunications Corp’s Government Solutions segment was awarded a contract from NASA’s Glenn Research Center for a Ka/S-band antenna system and radome to be installed at its new Aerospace Communications Facility in Cleveland, OH, supporting high bandwidth space ...
This paper presents a low-profile printed antenna with double U-shaped arms radiating circular polarization for the UHF RFID readers. The proposed antenna consists of double U-shaped strip structures and a capacitive feeding line to generate circular pol
shown in Table 1. Since the purpose of this work is to broaden the impedance bandwidth of an open slot antenna with a small size, it is observed that the broadband impedance bandwidth operation of the proposed design can be sustained with a small size ground plane of di...
An antenna system having reduced back radiation is disclosed. The antenna system includes an antenna and ground plane. The antenna includes electro-textiles and is configured to ope
An antenna system having reduced back radiation is disclosed. The antenna system includes an antenna and ground plane. The antenna includes electro-textiles and is configured to ope
A ground station antenna including a torus shaped reflector having multiple feed points along a focal arc in front of the reflector. The ground station antenna includes transceiver