High power phase shifter
AssigneeAlcatel Lucent
InventorsMichel Rixain, Jean-Luc Galiez
Life of this patent
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Abstract
A variable capacitance cell includes a hybrid coupler including a first port, a second port, a third port, and a fourth port. A first variable capacitance is connected to the second port. The first variable capacitance includes one or more first variable micro-electromechanical system (MEMS) capacitor. A second variable capacitance is connected to the third port. The second variable capacitance includes one or more second variable MEMS capacitors. Control signals are applied to the first and second variable capacitances to selectively change the capacitances of the first and second variable capacitances, thereby modifying a phase difference between a signal input at the first port and a signal output from the fourth port.
Claims19
An apparatus comprising:
- a hybrid coupler including at least a first port, a second port, a third port, and a fourth port;
- a first variable capacitance connected to the second port, wherein the first variable capacitance comprises at least one first variable micro-electromechanical system (MEMS) capacitor;
- and
- a second variable capacitance connected to the third port, wherein the second variable capacitance comprises at least one second variable MEMS capacitor.
An apparatus comprising:
- a plurality of variable capacitance cells coupled in series, wherein each variable capacitance cell comprises:
- a hybrid coupler including at least a first port, a second port, a third port, and a fourth port;
- a first variable capacitance connected to the second port, wherein the first variable capacitance comprises at least one first variable micro-electromechanical system (MEMS) capacitor;
- and
- a second variable capacitance connected to the third port, wherein the second variable capacitance comprises at least one second variable MEMS capacitor.
Dependencies are inferred from the claim text.