TIA's Glossary of Telecommunication Terms

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phase inversion

Introduction of a phase difference of 180°. Note: Phase inversion may occur with a random or periodic, symmetrical or non-symmetrical waveform, although it is usually produced by the inversion of a symmetrical periodic signal, resulting in a change in sign. A symmetrical periodic signal represented by f (t ) = A e^jt , after phase inversion, becomes f ₁(t ) = Ae^{j(t +)}, where t is time, A is the magnitude of the vector, is angular frequency ( = 2f ), where f is the frequency and 3.1416 and e 2.7183. The algebraic sum of f (t ) and f ₁(t ) will always be zero.

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