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Mobile wireless communication device with separate in-phase and quadrature power amplification

A communication device, mobile wireless technology, applied in power amplifiers, improved amplifiers to improve efficiency, transmission control/equalization, etc., can solve problems such as poor antenna matching, power amplifier linearity problems, and TRP total radiated power reduction

Active Publication Date: 2010-03-10
BLACKBERRY LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Modulation schemes using in-phase (I) and quadrature (Q) circuits can cause additional problems, resulting in linearity issues with power amplifiers and poor antenna matching
Due to e.g. higher nonlinearity of the power amplifier, this causes TRP (Total Radiated Power) reduction and causes harmonic interference problems

Method used

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  • Mobile wireless communication device with separate in-phase and quadrature power amplification
  • Mobile wireless communication device with separate in-phase and quadrature power amplification
  • Mobile wireless communication device with separate in-phase and quadrature power amplification

Examples

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Embodiment Construction

[0025] This description has been made with reference to the accompanying drawings, in which preferred embodiments are shown. However, many different embodiments could be used, therefore the description should not be construed as limited to the embodiments described herein. Rather, these examples are provided so that this disclosure will be thorough and complete. Like reference numerals refer to like elements throughout the drawings.

[0026] about Figure 1-3 will be briefly described, Figure 1-3 Examples of mobile wireless communication devices, such as hand-held portable cellular radios, are disclosed that may incorporate non-limiting examples of various circuits, including improved battery charging contact circuits, in-phase and quadrature modulation and power amplification circuits, and the following described antenna contacts. Figure 1-3 A number of non-limiting examples of different types of functional circuit components and their interconnections are shown and ope...

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PUM

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Abstract

A mobile wireless communications device includes a housing an antenna, and radio frequency (RF) circuitry. A transceiver is connected to the antenna and a processor is operative with the RF circuitry. The transceiver includes an In-phase and Quadrature (I / Q) Modulation and Power Amplification circuit having an In-phase (I) circuit with a modulator mixer and power amplifier circuit. A Quadrature (Q) circuit includes a modulator mixer and power amplifier circuit. A power combiner receives the separately amplified In-phase and Quadrature signals and sums and outputs the signals as a combined I and Q signal. The I and Q circuits are isolated from the combined I and Q signal to enhance antenna matching and transmitted radiated power (TRP) and reduce harmonic emission from the power amplification circuits.

Description

technical field [0001] The present invention relates to the field of communication devices, and more particularly, to mobile wireless communication devices and related methods. Background technique [0002] Cellular communication systems continue to grow in popularity and have become an integral part of personal and business communications. Cellular phones allow users to make and receive phone calls almost anywhere they travel. Additionally, as cellular telephone technology has increased, so has the functionality of cellular devices. For example, many cellular devices now incorporate Personal Digital Assistant (PDA) features such as calendars, address books, task lists, calculators, memos and writing programs. These multifunction devices typically allow users to wirelessly send and receive electronic mail (email) messages, as well as access the Internet via, for example, cellular networks and / or wireless local area networks (WLANs). [0003] As the capabilities of cellula...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/005H03F3/20H04B1/40
CPCH04B15/04H04B1/0458Y02B60/50H04B2001/045H03F1/02H03F3/24H04B1/52H04B1/58
Inventor 朱里中佩里·亚尔穆西泽斯基乔治·曼科鲁斯麦克尔·科里根
Owner BLACKBERRY LTD