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Frequency agile transceiver for use in a multi-band handheld communications device

A communication device and handheld technology, applied in the field of communication, can solve the problems of high cost and complexity of multi-band handheld wireless communication devices, and adverse effects on system performance

Inactive Publication Date: 2008-05-07
QUALCOMM INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the number of frequency bands required increases, the cost and complexity of implementing a multi-band handheld wireless communication device becomes prohibitive
Additional losses due to use of RF switches adversely affect system performance

Method used

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  • Frequency agile transceiver for use in a multi-band handheld communications device
  • Frequency agile transceiver for use in a multi-band handheld communications device
  • Frequency agile transceiver for use in a multi-band handheld communications device

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Embodiment Construction

[0019] The detailed description set forth below in connection with the accompanying drawings is intended as a description of various embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The detailed description contains specific details for the purpose of providing a thorough understanding of the invention. However, it will be understood by those skilled in the art that the present invention may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts of the invention.

[0020] A multi-band handheld wireless communication device can be used to access a network or communicate with other mobile users using one or more wireless services. The term "handheld wireless communication device" refers to any type of device intended to be carried by a user and capable of communicating via a wireless cha...

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Abstract

A multi-band handheld communications device includes a transceiver including a transmitter having a transmit filter and a receiver having a receive filter, each of the transmit and receive filters having a bandpass region tunable across multiple bands, and a processor configured to select one of the multiple bands to operate the handheld communications device, and tune each of the transmit and receive filters based on the selected one of the multiple bands.

Description

[0001] This patent application claims priority based on Provisional Application No. 60 / 625,224, filed November 5, 2004, entitled "A Frequency Agile Transceiver for Use in a Multi-Band Handheld Communications Device," which is assigned to the present assignee and is hereby expressly incorporated herein by reference. technical field [0002] The present invention relates generally to communications, and more particularly to a frequency agile transceiver for use in a multiband handheld communications device. Background technique [0003] The demand for wireless communications has led to the development of ever-increasing wireless services. Wireless services started with a blueprint that relied on cellular technology. Cellular technology is based on a topology in which the geographic coverage area is divided into cells. Within each of these units are fixed radio transmitters and control equipment that communicate with mobile users. Cellular service operating between 824-894 M...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/52
CPCH04B1/0057H04B1/52H04L5/16H04B1/006H04B1/406
Inventor 斯坦利·S·通茨奇
Owner QUALCOMM INC