Assertion: antenna's power | /r/HasProperty | reflected
Facets:
value: from the antenna
type: OTHER
value: back into the transceiver
type: TRANSITIVE-OBJECT
Source sentences:
text: S11 represents how much power is reflected from the antenna, and hence is known as the reflection coefficient (sometimes written as gamma: or return loss.
text: S11 represents how much power is reflected from the antenna, and hence is known as the reflection coefficient (sometimes written as gamma: or return loss.
text: If S11=0 dB, then all the power is reflected from the antenna and nothing is radiated.
text: The above figure implies that the antenna radiates best at 2.5 GHz, where S11=-10 dB. Further, at 1.5 GHz the antenna will radiate virtually nothing, as S11 is close to 0 dB (so all the power is reflected).
text: When the signal does not travel through the antenna system correctly, the transmit power is reflected back into the transceiver which causes reduced range and potential damage to the internal parts.
text: SWR of 1:1 would indicate that no power is reflected and lost; 5:1 would indicate a reflection and loss of 44%.
text: Power is reflected when feeder and load impedances do not match
text: But it is simply a measure of how much power is reflected from an antenna.