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load equipment

A technology of load equipment and variable capacitance, applied in the direction of multi-terminal pair network, etc., can solve the problems of unavailable differential control voltage pair and large parasitic capacitance value, and achieve the effect of improving performance, reducing production cost and size

Inactive Publication Date: 2016-11-30
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the opposite C-V curve requires a differential control voltage pair, which may not be available in some applications
In addition, such connected varactors inevitably introduce large parasitic capacitance values

Method used

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Embodiment Construction

[0019] Certain terms are used in the claims and description to refer to particular elements. Those of ordinary skill in the art should understand that hardware manufacturers may use different terms to refer to the same element. The claims and description of the present invention do not use the difference in name as a way to distinguish components, but use the difference in function of components as a criterion for distinguishing. The "comprising" mentioned throughout the specification and subsequent claims is an open term, so it should be interpreted as "including but not limited to". Otherwise, the term "coupled" includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is coupled to a second device, it means that the first device may be directly electrically connected to the second device, or indirectly electrically connected to the second device through other devices or connection means.

[0020] The term "approxima...

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Abstract

The present invention provides a load device, including: a plurality of variable capacitance units, including at least a first variable capacitance unit and a second variable capacitance unit respectively having different inherent capacitance characteristics, wherein the first variable capacitance unit and the Each of the second variable capacitance units has a first node and a second node, and the first node of the first variable capacitance unit and the first node of the second variable capacitance unit are coupled to a first voltage, so The second node of the first variable capacitance unit is coupled to a second voltage, and the second node of the second variable capacitance unit is coupled to a third voltage. By utilizing the present invention, the production cost and size of the load device are reduced, and the performance of the load device is improved.

Description

technical field [0001] The present invention relates to load devices employing linearization techniques, and more particularly to load devices having tunable capacitive units of different semiconductor architectures / threshold voltages, and to load devices having the same inherent capacitive characteristic ), wherein the variable capacitance units having the same intrinsic capacitance characteristics are directly connected to the supply voltage and the ground voltage, respectively. Background technique [0002] Varactor devices are commonly used in a variety of applications requiring variable capacitance values. Therefore, the linearity of the capacitance versus voltage curve (C-V curve, hereinafter referred to as C-V curve) of the varactor device will affect the overall performance of the application. There are several conventional methods of linearizing the C-V curve of a varactor device. For example, a traditional method is based on a resistive DAC (resistor DAC, R-DAC),...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03H11/02
Inventor 詹景宏陈忠伟
Owner MEDIATEK INC