Phase shifter for broadband radio signal

Details Phase shifter for broadband radio signal Phase shifter for broadband radio signal

1982-12-28

1985-12-10

Nussbaum, Marvin L.

Wave transmission lines and networks

Coupling networks

Delay lines including a lumped parameter

333 81R, 333103, 333139, H03H 720, H03H 721

Patent

active

045582912

ABSTRACT:
A circuit capable of vector magnitude control and phase reversal for a radio signal such as an intermediate frequency signal. The circuit includes an inverting signal path and a noninverting signal path and means for selecting between the two. Further, a variable attenuation controllable from a function control input establishes the magnitude of the output signal vector. There is also disclosed a phase shifter employing two such circuits. In the phase shifter, a radio signal vector to be shifted is applied to the inputs of the two circuits, with a 90.degree. shift between the two inputs. With proper vector magnitude and phase reversal control of the two circuits, there can be provided a preselected phase shift in any quadrant.

REFERENCES:
patent: 3323080 (1967-05-01), Schwelb et al.
patent: 3739103 (1973-06-01), Hess
patent: 4056792 (1977-11-01), Horwitz et al.
patent: 4224583 (1980-09-01), Larkin

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