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

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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 Une

Method used

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  • Semiconductor device
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Example

[0031] First embodiment

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

[0033] Therefore, a radio apparatus including the semiconductor device according to the first embodiment is explained below. figure 1 It is a block diagram of the radio device 1 according to the first embodiment. pay attention to, figure 1 The configuration of the radio device shown in is only an example of the configuration of the rad...

Example

[0129] Second embodiment

[0130] In the second embodiment, the power amplifier unit 43a as another embodiment of the power amplifier unit 43 according to the first embodiment is explained. 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 the description thereof is omitted.

[0131] Figure 18 A block diagram of the 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, 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. By removing...

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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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