Adaptive radio transceiver with calibration

• US 20050181754A1
• Filed: 04/15/2005
• Published: 08/18/2005
• Est. Priority Date: 10/21/1999
• Status: Active Grant

• Current Assignee: Avago Technologies International Sales Pte Limited (Broadcom, Inc.)
• Original Assignee: Ahmadreza Rofougaran, Brima Ibrahim, Hung-Ming Chien, Meng-An Pan, Stephen Wu
• Inventors: Pan, Meng-An, Rofougaran, Ahmadreza, Wu, Stephen, Ibrahim, Brima, Chien (Ed Chien), Hung-Ming
• Granted Patent: US 7,139,540 B2
• Time in Patent Office: Days
• US Class Current: 455/251.100
• CPC Class Codes: H03H 11/1291 Current or voltage controlled filters
• CPC Class Codes: H03H 2011/0494 Complex filters
• CPC Class Codes: H03H 21/0001 Analogue adaptive filters
• CPC Class Codes: H03H 21/0012 Digital adaptive filters
• CPC Class Codes: H03J 2200/10 Tuning of a resonator by means of digitally controlled capacitor bank

Abstract

An exemplary embodiment of the present invention described and shown in the specification and drawings is a transceiver with a receiver, a transmitter, a local oscillator (LO) generator, a controller, and a self-testing unit. All of these components can be packaged for integration into a single IC including components such as filters and inductors. The controller for adaptive programming and calibration of the receiver, transmitter and LO generator. The self-testing unit generates is used to determine the gain, frequency characteristics, selectivity, noise floor, and distortion behavior of the receiver, transmitter and LO generator. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or the meaning of the claims.

Claims

1. A calibration circuit, comprising:

a first component;

a digitally tunable second component;

a current source coupled to the first component to generate a first parameter of the first component, and coupled to the second component to generate a second parameter of the second component; and

a logic control block to digitally tune the second component as a function of the first and second parameters.

2-103. -103. (canceled)