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System and Transceiver Timing to Minimize the Number of Reference Sources Required in Multifunction Cellular Applications Including GPS

A system clock and receiver technology, applied to radio wave measurement systems, transmission systems, satellite radio beacon positioning systems, etc., can solve problems such as second clock reference frequency or phase changes

Active Publication Date: 2016-06-22
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] Adjustments made in response to the analog AFC signal may cause sudden frequency or phase changes in the second clock reference
While the cellular transceiver module 81 may accept bursty clock reference changes, such changes are not acceptable to the GPS receiver module 79

Method used

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  • System and Transceiver Timing to Minimize the Number of Reference Sources Required in Multifunction Cellular Applications Including GPS
  • System and Transceiver Timing to Minimize the Number of Reference Sources Required in Multifunction Cellular Applications Including GPS
  • System and Transceiver Timing to Minimize the Number of Reference Sources Required in Multifunction Cellular Applications Including GPS

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Embodiment Construction

[0034] The following description is merely exemplary in nature, and is in no way intended to limit the content of the present disclosure, its application, or use. For clarity, the same reference numbers are used in the drawings to identify similar elements. As used herein, at least one of the phrases A, B, and C should be considered as meaning the use of non-exclusive logical OR (OR) logic (A or B or C). It should be understood that, without changing the principle of the present disclosure, the steps in the method can be performed in a different order.

[0035] As used herein, the term module can refer to the following (or part of or including): application specific integrated circuit (ASIC); electronic circuit; combinational logic circuit; field programmable gate array (FPGA); implementation A processor of code (shared, dedicated, or grouped); other suitable components that provide the described functions; or a combination of some or all of the above (such as in a system on chi...

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Abstract

A system includes a first clock module configured to generate a first clock reference that is not corrected using automatic frequency correction (AFC). A global positioning system (GPS) module is configured to receive a first clock reference. An integrated circuit for a cellular transceiver including a system phase locked loop configured to receive a first clock reference, perform AFC, and generate an AFC corrected second clock reference.

Description

[0001] Cross references to related applications [0002] This application claims priority to U.S. Application No. 12 / 821,595 filed on June 23, 2010 and U.S. Provisional Application No. 61 / 220,102 filed on June 24, 2009. The disclosure of the above-mentioned application is incorporated herein by reference in its entirety. Technical field [0003] The present invention relates to multifunctional cellular applications, and more specifically to generating a clock reference for multifunctional cellular applications with global positioning systems. Background technique [0004] The background description provided herein is for the purpose of generally presenting the context of the disclosure. To the extent described in this background art section, the work of the inventor currently mentioned, and the description of the prior art at the time of submission, are not expressly or implicitly recognized as prior art of the present disclosure. [0005] See now figure 1 The cellular application ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/38H03J7/04
CPCG01S19/23H03J1/005H03J7/04H03L7/197H03L7/22H04B1/3805H03J7/02H04B1/16H04B1/38H04M1/02H04W84/12H03L7/0805
Inventor G·尤哈拉A·扎斯拉维斯基B·布伦
Owner MARVELL ASIA PTE LTD