standing wave ratio and antenna measurements Flashcards Preview

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Flashcards in standing wave ratio and antenna measurements Deck (8)
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1
Q

standing wave ratio

A

measure of how well a load is matched to a transmission line

2
Q

what does a low swr mean

A

allow efficient transfer of power to reduce losses

3
Q

how to connect swr meter

A

in series with feed line between transmitter and antenna

4
Q

directional wattmeter

A

instrument used to determine if feedline and antenna are properly matched

5
Q

4:1 swr reading

A

impedance mismatch

6
Q

antenna tuner

A

matches antennna system impedance to the transceivers output impedance

7
Q

dummy lod

A

non inductive resistor and a heat sink, prevents radiation nof signals when making tests

8
Q

antenna analyzer

A

determines if antenna is resonant at the desired operating requency