29-05-2017 дата публикации
Номер: KR1020170058511A
Автор:
KIM, SANG GOO,
LIM, WON GYU,
KWON, KI HO,
LEE, SUN IK,
KIM, JOONG PYO,
KIM, DAY YOUNG,
LEE, SANG KON,
KIM, CHOUL YOUNG
Принадлежит:
The present invention relates to a radio frequency (RF) front-end structure for providing a redundancy interface to an S-band transponder. According to one embodiment of the present invention, the RF front-end structure for providing a redundancy interface regarding a first omni antenna, a second omni antenna, and a high gain antenna comprises: a first diplexer, a second diplexer, a third diplexer, a first low noise amplifier, a second low noise amplifier, a third low noise amplifier, a first hybrid coupler, a second hybrid coupler, a third hybrid coupler, a first directional coupler, a second directional coupler and a double pole double throw (DPDP) switch. The first diplexer, the second diplexer, and the third diplexer are connected to the first omni antenna, the second omni antenna and the high gain antenna to selectively transmit an uplink signal and a downlink signal to a specific path. The first low noise amplifier, the second low noise amplifier, and the third low noise amplifier ...
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