Reconfigurable multi-frequency-range transceiver radio-frequency front end

A radio frequency front-end and transceiver technology, applied in the field of reconfigurable multi-band transceiver radio frequency front-end, can solve problems such as deteriorating the performance of low-IF receivers, and achieve the effect of reducing power consumption and improving performance

Active Publication Date: 2013-02-06
NANJING LINKWAH TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mismatches in the I and Q paths can

Method used

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  • Reconfigurable multi-frequency-range transceiver radio-frequency front end
  • Reconfigurable multi-frequency-range transceiver radio-frequency front end
  • Reconfigurable multi-frequency-range transceiver radio-frequency front end

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Embodiment Construction

[0017] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments.

[0018] Such as figure 1 As shown, the radio frequency front end of a reconfigurable multi-band transceiver of the present invention mainly includes the following modules: Antenna 11 (Antenna), Receiver 12 (Receiver), Transmitter 13 (Transmitter), Phase Locked Loop 14 (Phase Locked Loop , referred to as PLL), digital baseband modem 15 (DigitalBaseband Modem). The receiver includes the following modules: Low Noise Amplifier 121 (Low Noise Amplifier, LNA for short), first-stage reconfigurable down-converter 122 (amp-mix), second-stage quadrature down-converter 123 (quad mixer), first Intermediate frequency circuits 124 (Intermediate Frequency Circuits). The transmitter includes the following modules: the second intermediate frequency circuit 131 (Intermediate Frequency Circuits), the first stage low frequency upconverter 132 (Low Band Up Mixer)...

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Abstract

The invention discloses a reconfigurable multi-frequency-range transceiver radio-frequency front end which comprises a receiver part, a transmitter part and a frequency synthesizer, wherein the receiver part comprises a low-noise amplifier, a first-stage reconfigurable lower frequency converter, a second-stage orthogonal lower frequency converter and a first medium-frequency circuit which are sequentially connected; the first medium-frequency circuit is connected with a digital baseband modem; the transmitter part comprises a second medium-frequency circuit, a first-stage low-frequency upper frequency converter, a second-stage high-frequency upper frequency converter and a power amplifier; the second medium-frequency circuit is connected with the digital baseband modem; the frequency synthesizer comprises a phase lock ring; a frequency output of the phase lock ring is connected with the first-stage reconfigurable lower frequency converter, an orthogonal oscillator and a multi-phase filter; the orthogonal oscillator is connected with the second-stage orthogonal lower frequency converter and the first-stage low-frequency upper frequency converter; and an output of the multi-phase filter is connected with the second-stage high-frequency upper frequency converter. According to a reconfiguration method, a zero medium-frequency structure and a sliding medium-frequency structure are synthesized, so that the performance of a transceiver is improved, and the power consumption of the transceiver is reduced.

Description

technical field [0001] The invention belongs to the field of radio frequency integrated circuit design of microelectronics and solid state electronics, and relates to a novel radio frequency front end of a reconfigurable multi-band transceiver. Background technique [0002] With the continuous progress of semiconductor technology, new technologies and applications are constantly emerging in the field of wireless communication, such as GSM, WLAN, 3G, Bluetooth, Zigbee, WBAN and other technologies emerge in endlessly. People increasingly hope to use a portable wireless device to meet more needs, and the portability of the device limits its volume and quality. Compatibility and functional diversity of devices require multi-band, multi-mode circuits to be integrated as much as possible, and power consumption should be as low as possible to reduce the size of the battery. [0003] The radio frequency front-end of the transceiver is an important hardware foundation of the wireles...

Claims

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Application Information

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IPC IPC(8): H04B1/40
Inventor 董晶晶张凌炜姜汉钧池保勇李福乐张春王志华
Owner NANJING LINKWAH TECH INC
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