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Communication device, power detection method and operation method thereof

A communication device and power technology, applied in transmitter monitoring, receiver monitoring and other directions, can solve problems such as rising hardware costs and achieve cost-saving effects

Active Publication Date: 2016-06-08
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in the prior art, the demodulator 102 needs an oscillator to correctly demodulate the radio frequency signal RF_sig, causing the hardware cost of the communication device 10 to increase

Method used

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  • Communication device, power detection method and operation method thereof
  • Communication device, power detection method and operation method thereof
  • Communication device, power detection method and operation method thereof

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Embodiment Construction

[0017] Certain terms are used in the description and claims to refer to particular elements. It should be understood by those skilled in the art that manufacturers may use different terms to refer to the same element. The specification and claims do not use the difference in name as the way to distinguish components, but the difference in function of the components as the basis for the difference. "Includes" mentioned throughout the specification and claims is an open term, so it should be interpreted as "including but not limited to". In addition, the term "coupled" herein includes any direct and indirect means of electrical connection. Therefore, if it is described that a first device is electrically connected to a second device, it means that the first device may be directly connected to the second device, or indirectly connected to the second device through other devices or connection means.

[0018] Please refer to figure 2 , figure 2 It is a schematic diagram of a ...

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Abstract

A communication device with a power detection scheme is disclosed. The communication device includes a transmitter for transmitting an RF signal, a demodulator for demodulating the RF signal by utilizing a phase-modulated (PM) signal provided from the transmitter to generate a demodulated signal, a loopback circuit coupled between the transmitter and the demodulator for transmitting the RF signal and the PM signal from the transmitter to the demodulator when the power detection scheme is enabled, and a power detector for detecting power of the demodulated signal.

Description

【Technical field】 [0001] The present invention relates to a power detection method and its communication device, especially to a power detection method and its communication device capable of detecting the power of radio frequency signals without any oscillator being set in the demodulator. 【Background technique】 [0002] For communication systems such as Global System for Mobile Communications (GSM) and Enhanced Data Rates for GSMEvolution (EDGE), communication devices may choose to use polar transmitters instead of direct-conversion transmitters (direct- conversion transmitter). Polar transmitters can reduce complexity, reduce current consumption in the modulator path, and eliminate image rejection problems, so polar transmitters are more suitable for implementation in advanced complementary metal oxide semiconductor processes. Specifically, the polar coordinate transmitter is a transmission device that can divide a complex fundamental frequency signal into an amplitude m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B17/14
CPCH04B17/14H04B17/24
Inventor 陈信宏张湘辉迪米特里斯·纳尔班提斯柏纳得·马克·坦博克
Owner MEDIATEK INC