Multiband or multimode receiver with shared bias circuit

A multiband receiver with a shared bias circuit comprising:

• an antenna configured to receive and convert a wireless signal to a received signal;
• one or more antenna switches configured to route the received signal to one or more filters, wherein the one or more antenna switches are responsive to an antenna switch control signal;
• one or more filters configured to process the received signal to create a filtered received signal;
• two or more amplifiers, biased with an amplifier bias signal from a shared bias circuit, the two or more amplifiers configured to selectively amplify the filtered received signal to create an amplified signal;
• a shared bias circuit comprising:
• a bias circuit configured to generate an amplifier bias signal;
• a bias switch network configured to selectively provide the amplifier bias signal to only one of the two or more amplifiers, wherein the bias switch network is responsive to a bias switch control signal.

A method for receiving and amplifying an incoming signal in a receiver comprising:

• determining a mode of operation, wherein in response to determining the mode of operation a path selected from two or more paths within the receiver is active;
• receiving a received signal;
• selectively routing the received signal to an active path;
• filtering the received signal with an active path filter to create a filtered signal;
• generating a bias signal;
• controlling one or more switches to selectively connect the bias signal to only an active path amplifier
• amplifying the filtered signal with an active path amplifier.