RF transceiver and relevant wireless communication device thereof

A radio frequency transceiver, radio frequency signal technology, used in power amplifiers, differential amplifiers, DC-coupled DC amplifiers, etc.

Inactive Publication Date: 2010-10-13
LINK TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is a big challenge to design a low-cost RF transceiver chip that can also help wireless communication devices reduce their cost.

Method used

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  • RF transceiver and relevant wireless communication device thereof
  • RF transceiver and relevant wireless communication device thereof
  • RF transceiver and relevant wireless communication device thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Please refer to Figure 4 , Figure 4 It is a functional block diagram of a radio frequency transceiver 40 according to an embodiment of the present invention. The radio frequency transceiver 40 is used in a wireless communication device, and is usually realized by a chip. Other components in the wireless communication device include antennas, matching circuits, and baseband processors. For the sake of brevity, the Figure 4 Only one baseband processor 42 is shown. The RF transceiver 40 integrates the functions of a transmitter and a receiver, and includes a modulator 400 , an up-converter 402 , a power amplifier 404 , a low-noise amplifier 406 , a down-converter 408 and a demodulator 410 .

[0037] In the circuit of the transmitter of the radio frequency transceiver 40, the modulator 400 is coupled to the baseband processor 42, and is used to modulate a baseband signal to be transmitted generated by the baseband processor 42 to generate a radio frequency signal to b...

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PUM

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Abstract

The invention discloses a RF transceiver comprising a modulator, an upper transducer, a lower transducer, a demodulator, a power amplifier and a low-noise amplifier, wherein the power amplifier is coupled to the upper transducer and a base band processer to amplify a transmitted RF signal and comprises a first differential pair, a second differential pair and a third differential pair, the first differential pair controls a switching signal generated by the base band processer so as to control the RF transceiver to switch the operating mode of the RF transceiver, and the second differential pair is coupled to the first differential pair to form a first node and a second node; the low-noise amplifier is coupled to the lower transducer and the power amplifier for amplifying a received RF signal; and the third differential pair is coupled to the first node and the second node.

Description

technical field [0001] The invention relates to a radio frequency transceiver and its related wireless communication device, in particular to a radio frequency transceiver and its related wireless communication device which realize switching of the working mode of the radio frequency transceiver with the simplest components. Background technique [0002] Wireless transmitters and receivers play an important role in wireless communication devices, and with the evolution of chip technology, wireless transmitters and receivers are usually integrated into a radio frequency transceiver and implemented with a single chip. When the RF transceiver operates in the transmitter mode, the RF transceiver generates RF signals and transmits the RF signals to the air through the antenna; when the RF transceiver operates in the receiver mode, the RF transceiver transmits the RF signals received by the antenna It is converted into a baseband signal for processing by a baseband processor in th...

Claims

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Application Information

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IPC IPC(8): H04B1/40H03F3/20H03F3/21H03F3/45H04B1/38
CPCY02B60/50
Inventor李声汉
OwnerLINK TECH INC