Low noise amplifier circuit wih phase matched switch topology
AssigneeAgilent Technologies, Inc.
InventorsEdward Russel Brown, Michael Louis Frank
Life of this patent
Estimating the term…
Abstract
An amplifier and bypass switch circuit includes a circuit input, a circuit output, an amplifier and a switching circuit. The amplifier has an amplifier control input, and a first amplifier output. The amplifier control input is connected to the circuit input. The amplifier output is connected to the circuit output. The switching circuit includes a control input, a switch input, a switch output and a phase matching network. The switch output is connected to the circuit output. The switch input is connected to the circuit input. The phase matching network preserves phase information when the amplifier and bypass switch circuit switches between an amplifier mode and a bypass mode.
Claims11
An amplifier and bypass switch circuit comprising:
- a circuit input;
- a circuit output;
- an amplifier having an amplifier control input, and a first amplifier output, the amplifier control input being connected to the circuit input, and the amplifier output being connected to the circuit output;
- and,
- a switching circuit including:
- a control input,
- a switch input connected to the circuit input,
- a switch output connected to the circuit output, and
- a phase matching network, the phase matching network preserving phase information when the amplifier and bypass switch circuit switches between an amplifier mode and a bypass mode.
An amplifier and bypass switch circuit comprising:
- a circuit input;
- a circuit output;
- an amplifier having an amplifier control input, and a first amplifier output, the amplifier control input being connected to the circuit input, and the amplifier output being connected to the circuit output;
- and,
- a switching circuit having a switch control input, a switch input and a switch output, the switch output being connected to the circuit output and the switch control input being connected to the circuit input;
- wherein, when a control signal on the switch control input is at a first voltage level, the switching circuit places the amplifier and bypass switch circuit control into an amplifier mode in which the amplifier amplifies an input signal on the circuit input to produce an output signal on the circuit output;
- wherein, when the control signal on the switch control input is at a second voltage level, the switching circuit places the amplifier and bypass switch circuit control into a bypass mode in which the input signal on the circuit input is forwarded to the output signal on the circuit output bypassing the amplifier;
- and
- wherein the switching circuit preserves phase information when the amplifier and bypass switch circuit switches between the amplifier mode and the bypass mode.
Dependencies are inferred from the claim text.