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Methods and apparatuses for inductor tuning in radio frequency integrated circuits

A technology of integrated circuits and inductors, applied in the field of impedance matching circuits, can solve problems such as occupying space

Active Publication Date: 2014-05-07
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, inductors fabricated using integrated circuit technology can occupy a significant amount of space on an integrated circuit die (e.g., typically 300um by 300um or more)
Therefore, it may not be feasible to implement an inductor bank for changing the inductor value to facilitate tuning the impedance matching circuit

Method used

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  • Methods and apparatuses for inductor tuning in radio frequency integrated circuits
  • Methods and apparatuses for inductor tuning in radio frequency integrated circuits
  • Methods and apparatuses for inductor tuning in radio frequency integrated circuits

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Embodiment Construction

[0019] Various aspects of the present invention are disclosed in the following description and related drawings directed to specific embodiments of the present invention. Alternative embodiments may be designed without departing from the scope of the invention. In addition, well-known elements of the present invention will not be described in detail or will be omitted so as not to obscure the relevant details of the present invention.

[0020] The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any embodiment described as "exemplary" herein is not necessarily construed as being preferred or advantageous compared to other embodiments. Likewise, the term "embodiments of the invention" does not require that all embodiments of the invention include the discussed feature, advantage or mode of operation.

[0021] figure 1 Is a block diagram depicting an exemplary transceiver 100 that uses impedance matching devices consistent with various emb...

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Abstract

An apparatus for matching impedance within a Radio Frequency (RF) integrated circuit is presented. The apparatus includes a first impedance element placed in an RF signal path, an first inductor fabricated on the integrated circuit and connected to the first impedance element, and an adjustable capacitance circuit connected in series with the first inductor and placed between the first inductor and a ground node, where the adjustable capacitance circuit is adjusted to tune the inductance of the first inductor. A method for tuning an inductor is presented. The method includes ascertaining a target inductance value for an inductor in a RF integrated circuit, and determining a capacitance value of an adjustable capacitance circuit so that, when coupled to the inductor, the combined impedance of the adjustable capacitance circuit and the inductor is tuned to the ascertained target inductance value.

Description

Technical field [0001] Embodiments of the present invention generally relate to impedance matching circuits, and more specifically to circuits capable of tuning an inductor in a radio frequency (RF) impedance matching integrated circuit (IC). Background technique [0002] A radio frequency integrated circuit (RFIC) network can utilize impedance matching circuits to interface with different subsections within the RFIC network. Impedance matching circuits can be used to improve the power transfer between network subsections and / or to alleviate signal reflections that occur between the electrical boundaries of the subsections. Directly fabricating impedance matching circuits on the RFIC substrate itself can be beneficial for forcing cost reductions and improving packaging efficiency. [0003] Tuning the matching network to improve performance can present challenges to circuit designers. Because the parameters of various circuit elements (e.g., inductors, capacitors, etc.) depend on ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H7/40
CPCH03H7/40
Inventor 艾伦·纳恩·赫
Owner QUALCOMM INC
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