Antenna tuning switch and method for improving peak voltage thereof

An antenna tuning and switching circuit technology, applied to antennas, devices that make the antennas work in different bands at the same time, electronic switches, etc., can solve the problems of low peak voltage and uneven voltage distribution at each stage, and achieve improved performance, uniform Effects of Voltage Distribution Characteristics

Pending Publication Date: 2020-11-06
SHANGHAI HUAHONG GRACE SEMICON MFG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide an antenna tuning switch and a method for increasing its peak voltage, which is used to solve the uneven distribution of each stage voltage and the peak voltage in the antenna tuning switch circuit in the prior art. low voltage problem

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  • Antenna tuning switch and method for improving peak voltage thereof
  • Antenna tuning switch and method for improving peak voltage thereof
  • Antenna tuning switch and method for improving peak voltage thereof

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Embodiment Construction

[0023] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0024] see Figure 1 to Figure 6 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed arb...

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Abstract

The invention provides an antenna tuning switch and a method for improving peak voltage of the antenna tuning switch. Grid electrodes of first to Nth transistors are respectively connected with one end of a first resistor; the other ends of the first resistors are jointly connected to one end of a second resistor, and the other end of the second resistor serves as a gate control end to be connected with gate voltage VG; the source and drain ends of the first to Nth transistors are respectively connected with a third resistor; base electrodes of the transistors from the first transistor to theNth transistor are respectively connected with one end of a fourth resistor, the other ends of the fourth resistors are jointly connected to one end of a fifth resistor, and the other end of the fifthresistor serves as a substrate control end to be connected with voltage. According to the invention, a simplified equivalent capacitance circuit is established for a traditional antenna tuning switchcircuit, and an analytical expression of parasitic capacitance to ground in each stage of stack is derived to determine the value of each laminated capacitor, so that equal voltage division of each stage of stack is realized, and the switching performance is improved.

Description

technical field [0001] The invention relates to the technical field of semiconductors, in particular to an antenna tuning switch and a method for increasing its peak voltage. Background technique [0002] With the development of wireless communication technology, mobile communication devices usually need to support multi-mode and multi-band requirements, and multiple-input multiple-output (MIMO) requires more antennas due to the introduction of new frequency bands; at the same time, antenna tuning switches are required to make the antenna work in a wider frequency range. At present, it is a huge technical challenge to realize the antenna tuning switch with high peak voltage (Vpeak), and the voltage distribution of each stage of the traditional multi-level stacked antenna tuning switch is uneven, and the traditional antenna tuner switch uses multiple stacked field effect transistors (FET) implementations, however, the coupling capacitance between the off-state switch and gro...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): H03K17/687H01Q5/314
CPCH03K17/687H01Q5/314
Inventor何军任江川戴若凡
OwnerSHANGHAI HUAHONG GRACE SEMICON MFG CORP