right hand circular polarization造句

• Throughout the World, most satellite TV transmissions use vertical and horizontal linear polarization but in North America, DBS transmissions use left and right hand circular polarization.
• External " hockey puck " type antennas used with Iridium handheld phones, data modems and SBD terminals are usually defined as 3dBi gain, 50 ohm impedance with RHCP ( right hand circular polarization ) and 1.5 : 1 VSWR . As Iridium antennas function in frequencies very close to that of GPS, a single antenna may be utilized through a pass-through for both Iridium and GPS reception.