초록 ▼

An apparatus for receiving signals includes a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal. An I/Q direct down converter is coupled to the LNA. The I/Q direct down converter is configured to split the RF signal into real and imaginary components and to down convert t

An apparatus for receiving signals includes a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal. An I/Q direct down converter is coupled to the LNA. The I/Q direct down converter is configured to split the RF signal into real and imaginary components and to down convert the real and imaginary components directly to baseband signals. A local oscillator (LO) is coupled to the I/Q direct down converter and is configured to drive the I/Q direct down converter. First and second filters are coupled to the I/Q direct down converter. The first and second filters are configured to filter the down converted real and imaginary components, respectively. First and second analog-to-digital converters (ADCs) are coupled to the first and second filters, respectively. The first and second ADCs are configured to convert the real and imaginary components into digital signals. The first and second ADCs have a dynamic range that is wide enough to convert the filtered, down converted real and imaginary components to digital signals without using variable gain on the filtered and down converted real and imaginary components. An apparatus for use in wireless communications includes a radio, a modem and a controller integrated onto a single integrated circuit (IC). The radio includes a receiver for receiving data and a transmitter for transmitting data. The modem is coupled to the radio and is configured to demodulate received data and modulate data for transmission. The controller is coupled to the modem and includes a digital interface for external communications through which received data and data for transmission is sent, a connection state machine configured to accept commands through the digital interface and to respond to the commands by initiating a sequence, and a receive/transmit state machine configured to perform state control of the radio in response to the initiated sequence.

대표청구항 ▼

1. An apparatus for receiving Radio Frequency (RF) signals, comprising:a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal; an I/Q direct down converter coupled to the LNA, the I/Q direct down converter configured to split the RF signal into real and imaginary components

1. An apparatus for receiving Radio Frequency (RF) signals, comprising:a low noise amplifier (LNA) configured to receive a radio frequency (RF) signal; an I/Q direct down converter coupled to the LNA, the I/Q direct down converter configured to split the RF signal into real and imaginary components and to down convert the real and imaginary components directly to baseband signals, wherein the baseband signals have associated I and Q components, and wherein the I components are generated at a first output of the I/Q down converter, and wherein the Q components are generated at a second output of the I/Q down converter; a local oscillator (LO) coupled to the I/Q direct down converter that is configured to drive the I/Q direct down converter; first and second filters coupled directly to the first and second outputs, respectively, of the I/Q direct down converter, the first and second filters configured to filter the down converted real and imaginary components, respectively; and first and second wide dynamic range analog-to-digital converters (ADCs) coupled directly to the first and second filters, respectively, the first and second ADCs configured to convert the real and imaginary components into digital signals, the first and second ADCs having a dynamic range that is sufficiently wide to directly convert the filtered, down converted real and imaginary components to digital signals without first amplifying the filtered and down converted real and imaginary components, wherein the dynamic range of the ADCs is equal to or greater than approximately 74 dB.