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Low-power-consumption high-linearity double balanced mixer containing no on-chip inductor

A double-balanced mixer, high linearity technology, applied in the modulation conversion balance device, electrical components, modulation transfer, etc., can solve the problems of high linearity, low power consumption, small area, etc., to improve linearity , increase gain and linearity, and improve noise performance

Inactive Publication Date: 2019-02-22
TIANJIN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, it is difficult for existing low-power mixers to achieve low power consumption, small area and high linearity at the same time

Method used

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  • Low-power-consumption high-linearity double balanced mixer containing no on-chip inductor
  • Low-power-consumption high-linearity double balanced mixer containing no on-chip inductor
  • Low-power-consumption high-linearity double balanced mixer containing no on-chip inductor

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Embodiment Construction

[0040] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0041] Such as figure 1 As shown, the input transconductance unit includes: a first transistor (M1), a second transistor (M2), a third transistor (M3) and a fourth transistor (M4);

[0042] Wherein, the first transistor (M1) and the third transistor (M3), the second transistor (M2) and the fourth transistor (M4) form a PMOS / NMOS complementary structure, that is, the first transistor (M1) and the third transistor ( The gate of M3) is coupled in parallel through the first capacitor (C1), and jointly inputs the forward radio frequency signal (RF+), the first transistor (M1) is connected to the drain of the third transistor (M3), and is jointly connected with the fifth transistor (M5 ) is connected to the source of the sixth transi...

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Abstract

The invention relates to a low-power-consumption high-linearity double balanced mixer containing no on-chip inductor, comprising an input transconductance unit in charge of converting radio frequencyvoltage signals (RF+ and RF-) into radio frequency current signals, a switching unit in charge of performing current reversal frequency conversion on the radio frequency current signals output by theinput transconductance unit under switching control of local oscillator voltage signals (LO+ and LO-) and generating a medium frequency current signal, a load unit in charge of converting a current signal output by the switching unit into a medium frequency voltage signal as well as a cross coupling unit, wherein differential medium frequency voltage signals (IF+ and IF-) are output between the switching unit and the load unit, a cross coupling stage is realized by one pair of cross coupling capacitors and is in cross connection between a grid electrode of a transconductance stage transistor of the input transconductance unit and a drain electrode of a transconductance stage transistor of an input transconductance unit in another branch circuit.

Description

technical field [0001] The invention belongs to the technical field of radio frequency integrated circuits, and in particular relates to a double-balanced mixer with low power consumption and high linearity. Background technique [0002] The Internet of Things technology supported by wireless sensor networks has developed rapidly in recent years, and a large number of sensor nodes are arranged in the sensing environment to form an ad hoc network. In the energy consumption of wireless sensor network nodes, the wireless communication system occupies a major part, and compared with the baseband circuit, the radio frequency front-end accounts for a larger proportion of the power consumption of the wireless communication system. Therefore, low-power radio frequency technology has gradually become the key to circuit design. [0003] In the RF front-end circuit, the mixer (MIXER) realizes the conversion of the RF signal and the IF signal, and is usually cascaded after the low-nois...

Claims

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Application Information

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IPC IPC(8): H03D7/14
CPCH03D7/1441H03D7/1458
Inventor 张为文枭鹏
Owner TIANJIN UNIV
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