WO2000036757A3 - Apparatus and method for wireless communications - Google Patents

Apparatus and method for wireless communications Download PDF

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Publication number
WO2000036757A3
WO2000036757A3 PCT/US1999/030280 US9930280W WO0036757A3 WO 2000036757 A3 WO2000036757 A3 WO 2000036757A3 US 9930280 W US9930280 W US 9930280W WO 0036757 A3 WO0036757 A3 WO 0036757A3
Authority
WO
WIPO (PCT)
Prior art keywords
coupled
imaginary components
real
radio
down converter
Prior art date
Application number
PCT/US1999/030280
Other languages
French (fr)
Other versions
WO2000036757A2 (en
WO2000036757A9 (en
Inventor
Stephen J Brown
Andrew X Estrada
Terrance R Bourk
Steven R Norsworthy
Patrick J Murphy
Christopher D Hull
Glenn Chang
Mark V Lane
Jorge A Grilo
Original Assignee
Silicon Wave Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Silicon Wave Inc filed Critical Silicon Wave Inc
Priority to AU31264/00A priority Critical patent/AU3126400A/en
Publication of WO2000036757A2 publication Critical patent/WO2000036757A2/en
Publication of WO2000036757A3 publication Critical patent/WO2000036757A3/en
Publication of WO2000036757A9 publication Critical patent/WO2000036757A9/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers

Abstract

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.
PCT/US1999/030280 1998-12-18 1999-12-17 Apparatus and method for wireless communications WO2000036757A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU31264/00A AU3126400A (en) 1998-12-18 1999-12-17 Apparatus and method for wireless communications

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US21604098A 1998-12-18 1998-12-18
US09/216,040 1998-12-18
US09/305,330 US6366622B1 (en) 1998-12-18 1999-05-04 Apparatus and method for wireless communications
US09/305,330 1999-05-04

Publications (3)

Publication Number Publication Date
WO2000036757A2 WO2000036757A2 (en) 2000-06-22
WO2000036757A3 true WO2000036757A3 (en) 2000-12-21
WO2000036757A9 WO2000036757A9 (en) 2001-08-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/030280 WO2000036757A2 (en) 1998-12-18 1999-12-17 Apparatus and method for wireless communications

Country Status (3)

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US (1) US6366622B1 (en)
AU (1) AU3126400A (en)
WO (1) WO2000036757A2 (en)

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