Quadrant switching method for phase shifter
AssigneeSirenza Microdevices, Inc.
InventorJohn J. Nisbet
Life of this patent
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Abstract
An apparatus comprising a quadrature network, an RF combining circuit and a weighting network. The quadrature network may be configured to generate a first and a second signal in response to an input signal. The RF combining circuit may be configured to generate an output signal comprising the input signal variably phase shifted from a selectable fixed phase starting point in response to the first signal, the second signal and one or more weighting signals. The weighting network may be configured to generate the weighting signals in response to a voltage control signal and one of four possible output selections. The voltage control signal may be configured to control the variable phase shift.
Claims23
An apparatus comprising:
- a quadrature network configured to generate a first and a second signal in response to an input signal;
- an RF combining circuit configured to generate an output signal comprising said input signal variably phase shifted from a selectable fixed phase starting point in response to (i) said first signal, (ii) said second signal and (iii) one or more weighted signals;
- and
- a weighting network configured to generate said weighted signals in response to a voltage control signal and one of four possible output selection signals, wherein said voltage control signal is configured to control said variable phase shift.
An apparatus comprising:
- a quadrature network configured to generate a first and a second signal in response to an input signal and one of four possible output selection signals;
- an RF combining circuit configured to generate an output signal comprising said input signal variably phase shifted from a selectable fixed phase starting point in response to (i) said first signal, (ii) said second signal and (iii) one or more weighted signals;
- and
- a weighting network configured to generate said weighted signals in response to a voltage control signal, wherein said voltage control signal is configured to control said variable phase shift.
A method for variably phase shifting an input signal comprising the steps of:
- (A) generating a first and a second signal in response to said input signal, said first signal shifted in phase with respect to said second signal;
- (B) generating one or more weighted signals in response to a voltage control signal and said one of four possible output selection signals;
- (C) controlling a selectable fixed phase starting point;
- and
- (D) generating an output signal, wherein said output signal comprises said input signal variably phase shifted from said selectable fixed phase starting point in response to said first signal, said second signal and said one or more weighted signals.
An apparatus comprising:
- a quadrature network configured to generate a first and a second signal in response to an input signal;
- an RF combining circuit configured to generate an output signal comprising said input signal variably phase shifted from a selectable fixed phase starting point in response to (i) said first signal, (ii) said second signal and (iii) one or more weighted signals;
- and
- a weighting network (i) comprising one or more weight circuits configured to generate said weighted signals in response to one or more current signals and (ii) configured to generate said weighted signals in response to a voltage control signal and one of four possible output selection signals, wherein said voltage control signal is configured to control said variable phase shift.
Dependencies are inferred from the claim text.