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Voltage-to-current converter and RF transceiver

A converter circuit and voltage technology, applied in the direction of instruments, regulating electrical variables, control/regulation systems, etc., can solve problems such as large bandwidth, high linearity and high performance

Inactive Publication Date: 2017-06-20
TAIWAN SEMICON MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Some conventional V2I systems can provide linear characteristics in narrow bandwidth, but cannot provide high linearity and high performance in large bandwidth

Method used

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  • Voltage-to-current converter and RF transceiver
  • Voltage-to-current converter and RF transceiver
  • Voltage-to-current converter and RF transceiver

Examples

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Embodiment Construction

[0017] The following disclosure provides many different embodiments or examples for implementing different features of the provided subject matter. Specific examples of components and arrangements are described below to simplify the invention. Of course, these are only examples and are not intended to limit the invention. For example, in the following description, forming the first member above or on the second member may include an embodiment in which the first member and the second member are formed in direct contact, and may also include the An embodiment in which additional parts are formed so that the first part and the second part may not directly contact. In addition, the present invention may repeat reference numerals and / or letters in each example. This repetition is for the purpose of simplicity and clarity, and by itself does not indicate the relationship between the various embodiments and / or configurations discussed.

[0018] In various embodiments, a voltage-to-c...

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Abstract

An embodiment of the invention discloses a voltage-to-current converter. The voltage to current converter includes a converter circuit having an input node, an amplified signal node and an output. The input node is configured to receive a sinusoidal voltage signal and the output is configured to provide a half-wave current signal. A transistor having a gate, a source, and a drain is coupled to the input node. The input node is coupled to one of the source or the drain. The amplified signal node is coupled to the gate. A process tracking stabilizer is coupled to the transistor at the source or the drain not coupled to the input node. The process tracking stabilizer is configured to generate a control voltage for the transistor. The control voltage is configured to maintain a predetermined non-zero voltage at the input node of the converter circuit during a negative cycle of the sinusoidal voltage signal. The embodiment of the invention further provides an RF transceiver.

Description

Technical field [0001] The embodiments of the present invention relate to the field of semiconductors, and more specifically to voltage-current converters and radio frequency transceivers. Background technique [0002] The radio frequency (RF) transmission structure utilizes a voltage-current (V2I) converter to convert a full-wave voltage input into a half-wave current output for transmission over the RF channel, such as wireless transmission. For example, during radio operations such as transmitting or receiving signals, Long Term Evolution (LTE) utilizes one or more V2I converters. [0003] In an ideal (for example, theoretical) situation, the input of the V2I converter has a relatively high impedance, so that substantially no current flows into the V2I converter. The lack of current generates a virtual ground at the input, which causes the input to behave as if coupled to ground (for example, for the purpose of calculating the current generated by one or more additional circuit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05F1/56
CPCG05F1/561G05F3/262
Inventor 叶恩祥叶子祯罗安训
Owner TAIWAN SEMICON MFG CO LTD
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