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Semiconductor device

A semiconductor and device technology, applied in the field of semiconductor devices, can solve the problem that the second harmonic distortion characteristics cannot be improved, and achieve the effect of suppressing the second harmonic and improving efficiency

Pending Publication Date: 2018-04-27
RENESAS ELECTRONICS CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the case of a power amplifier driven by a two-phase rectangular wave signal, there is a problem that even when the technique disclosed in Japanese Unexamined Patent Application Publication No. 2015-115946 is used to cancel the duty cycles of the two rectangular wave signals When the difference between

Method used

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  • Semiconductor device
  • Semiconductor device
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Examples

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no. 1 example

[0032] First, the semiconductor device according to the first embodiment is a radio chip that generates reception data from a reception signal input through an antenna in a communication device, and also generates a transmission signal for driving the antenna based on transmission data. Note that the semiconductor device according to the first embodiment may be in charge of one of a reception function of generating reception data from reception signals and a transmission function of generating transmission signals from transmission data in the radio chip, or may be in charge of part of the functions.

[0033] Therefore, radio equipment including the semiconductor device according to the first embodiment is explained hereinafter. figure 1 is a block diagram of the radio device 1 according to the first embodiment. Please be aware of, figure 1 The radio configurations shown in are examples of radio configurations only. That is, the circuitry used to implement a radio is not lim...

no. 2 example

[0130] In the second embodiment, a power amplifier unit 43a is explained as another embodiment of the power amplifier unit 43 according to the first embodiment. In the description of the second embodiment, the same symbols as those in the first embodiment are assigned to the same components as those in the first embodiment, and descriptions thereof are omitted.

[0131] Figure 18 A block diagram of a power amplifier unit 43a of the semiconductor device according to the second embodiment is shown. Such as Figure 18 As shown in , the power amplifier unit 43a according to the second embodiment is obtained by the following steps: In the power amplifier unit 43 according to the first embodiment, the duty ratio adjustment circuit 51 is removed, and the phase difference setting circuit 75 and the transmission The pulse control circuit 80 replaces the phase difference setting circuit 55 and the transmission pulse control circuit 60, respectively. The phase difference setting circ...

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Abstract

The invention provides a semiconductor device. In a related-art semiconductor device, there is a problem that a second-order harmonic distortion originating in a power amplifier driven by a rectangular-wave signal cannot be effectively suppressed. According to an embodiment, a semiconductor device generates a transmission signal (RF_OUT) for driving an antenna by receiving first transmission pulses (INd_P) and second transmission pulses (INd_N) having a duty ratio lower than 50%, adjusting a phase difference between the first transmission pulses (INd_P) and the second transmission pulses (INd_N) to a predefined phase difference, and supplying the first transmission pulses (INd_P) and the second transmission pulses (INd_N) after phase difference-adjustment to a power amplifier (54).

Description

technical field [0001] The present disclosure relates to semiconductor devices. For example, the present disclosure relates to a semiconductor device including a power amplifier that generates a transmission signal for driving an antenna based on a two-phase pulse. Background technique [0002] In recent years, a concept of IoT (Internet of Things) has been proposed in which products that have not been connected to a network in the past are always connected to a network and are controlled through the network. In this IoT concept, it has been considered to enable connection of infrastructure management products such as smart electricity meters, gas meters, or products such as those for building management to a network. In this IoT concept, radio signals whose carrier frequency is in the gigahertz band (ie, not higher than 1 GHz) are used in some cases. Compared with radio signals in the 2.4GHz band, radio signals in the gigahertz band are superior in communication range, di...

Claims

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Application Information

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IPC IPC(8): H03F1/02H03F3/195H03F3/217
CPCH03F1/0233H03F3/195H03F3/217H03F2200/451H03F2200/165H03F3/2176H03F1/0227H03F3/245G01R25/04H03G3/3042
Inventor 沟神正和
Owner RENESAS ELECTRONICS CORP
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