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Frequency mixer with low-power consumption and high performance in quadrature

A mixer and low power consumption technology, applied in the field of mixers for quadrature signals, can solve problems such as no advantages

Inactive Publication Date: 2008-06-18
FUDAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Linearity and noise figure also have no advantage over conventional Gilbert mixers

Method used

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  • Frequency mixer with low-power consumption and high performance in quadrature
  • Frequency mixer with low-power consumption and high performance in quadrature
  • Frequency mixer with low-power consumption and high performance in quadrature

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0041] The quadrature mixer with this structure is applied to the MB-OFDM UWB radio frequency receiver in the 3.1GHz to 4.7GHz frequency band, and its specific design parameters are shown in Figure 5. Using 0.18um RF CMOS 1P6M process, the simulation tool is Cadence SpectreRF, V bias =0.68V, the gate bias voltage of the LO switching stage tube is 0.8V.

[0042] The on-chip integrated transformer used is a cross-planar on-chip transformer, the sixth layer of metal wiring, the primary and secondary coils are 3n, that is, the turns ratio is 1:1, and the coupling coefficient is 0.8.

[0043] The frequency of the LO local oscillator signal is 3.432GHz, 3.960GHz, 4.488GHz, the frequency range of the RF input signal is about 3.16GHz to 4.76GHz, and the frequency range of the IF intermediate frequency signal is 4.125MHz to 264MHz.

[0044] The specific simulation results are as follows:

[0045] Mixer

index parameter

Simulation Results (NOM Corner)

LO f...

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PUM

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Abstract

The invention belongs to an RF wireless receiver integration circuit technical field, in particular to an orthogonal down-frequency mixer with low power loss and high performance. The invention consists of an RF conversion transformer, an LO switch class, an IF load class and a power supply bias; wherein, the RF conversion transformer amplifies and transmits the received RF current signals; the orthogonal LO switch class leads the RF current signals to be alternatively output on an output differential load by a LO frequency with the phase difference of 90 DEG, thus implementing that the RF frequency multiplied by the orthogonal LO frequency obtains the orthogonal IF signal which is then output on the load. Compared with traditional Kilbert frequency mixers, the circuit structure replaces the differential transistor of RF amplification class by an on-chip integration amplifier, which can lead the frequency mixer to be applicable to low power voltage and dramatically reduce circuit noise and signal distortion; two orthogonal LO switch classes are combined into one circuit, which leads the frequency mixer to output orthogonal IF signals, simplifies the design of the wireless receiver and obviously reduces the power loss of the frequency mixer module.

Description

technical field [0001] The invention belongs to the technical field of radio frequency wireless receiver integrated circuits, and in particular relates to an orthogonal signal down-mixer (Down-conversion Mixer) applied in a wireless receiver integrated circuit. It can be used in radio frequency signal receiver chips of technical standards such as mobile communication, wireless broadband network and wireless data transmission. Background technique [0002] With the development of communication and semiconductor technology, various mobile communication systems and wireless data transmission technologies have developed rapidly. Representatives of them include GSM, CDMA, Bluetooth and WiFi, etc., especially in recent years 3G, IEEE802.11a / b / g , WiMax and UWB ultra-wideband technology and other high data rate wireless transmission technologies continue to emerge, which put forward high requirements for high-performance radio frequency signal receivers. Due to the high carrier fr...

Claims

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Application Information

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IPC IPC(8): H03D7/14
Inventor 李巍杨光
Owner FUDAN UNIV
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