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Current multiplexing low-noise amplifier with sideband suppression function

A low-noise amplifier and current multiplexing technology, applied in the direction of improving amplifiers to reduce noise effects, etc., can solve the problem that LNA design is difficult to achieve low power consumption and low-noise out-of-band signal suppression at the same time, so as to improve out-of-band rejection capability, Low power consumption, the effect of avoiding the deterioration of the noise figure of the LNA

Pending Publication Date: 2021-01-26
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Based on the above background technology, the present invention proposes a current multiplexing low noise amplifier with sideband suppression function to solve the problem that it is difficult to simultaneously realize low power consumption, low noise and out-of-band signal suppression in LNA design

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  • Current multiplexing low-noise amplifier with sideband suppression function
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  • Current multiplexing low-noise amplifier with sideband suppression function

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Embodiment Construction

[0020] A current multiplexing low noise amplifier with sideband suppression function proposed by the present invention will be described in detail below with reference to the accompanying drawings.

[0021] Such as figure 1 As shown, a current multiplexing low noise amplifier with sideband suppression function, including: transistor M 0 ~ M n (n is a natural number), the on-chip inductor L 0 ~ L n+2 , L S1 ~ L Sn+2 , on-chip capacitor C 0 ~C n+2 、C P1 ~C Pn 、C C1 ~C Cn 、C F 、C B and on-chip resistor R B1 ~R Bn , R F . Among them, the transistor M 0 gate with on-chip capacitor C 0 connected to one end of the on-chip capacitor C 0 The other end is connected to the circuit input, the on-chip inductor L 0 The two ends are respectively connected to the transistor M 0 The gate and bias voltage V B0 , transistor M 0 The drain of is connected to n amplifying units connected in series; in each amplifying unit, the transistor M x (x=1,2,…n) gate and on-chip induc...

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Abstract

The invention discloses a current multiplexing low-noise amplifier with a sideband suppression function, and belongs to the technical field of radio frequency integrated circuits. A current multiplexing amplification unit contained in the amplifier has the characteristic of low power consumption, the sideband suppression function is realized by notch filters connected to a transistor grid, a feedback branch and an output branch, and the design of the multiple notch filters can improve the sideband suppression capability of the low-noise amplifier on one hand and can expand the bandwidth of suppression signals on the other hand. The design of non-input end connection of the notch filter can also prevent the wave trap from deteriorating the noise performance of the low-noise amplifier. The low-noise amplifier can be applied to a low-power-consumption radio frequency system of an integrated transceiving channel.

Description

technical field [0001] The invention belongs to the technical field of radio frequency integrated circuits, in particular to a current-multiplexing low-noise amplifier with a sideband suppression function. Background technique [0002] An active phased array system generally includes multiple receiving and transmitting channels. Simultaneous operation of multiple channels will bring about system heat dissipation and reliability problems. The function of realizing low-noise amplification under limited conditions, and current multiplexing technology is an effective means for low-power design of low-noise amplifier (Low Noise Amplifier, LNA) circuit. In addition, the receiving channel and the transmitting channel are usually multiplexed with one antenna element. Since the signal amplitude of the transmitting channel is relatively large, the receiving channel may be interfered by the transmitting channel. In order to avoid this risk, first of all, in the frequency planning, the...

Claims

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Application Information

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IPC IPC(8): H03F1/26
CPCH03F1/26
Inventor 杨格亮廖春连韩威王尧吴迪王旭东曲明
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP