A 2.4 to 5.4 GHz Low Power CMOS Reconfigurable LNA for Multistandard Wireless Receiver

Fu, Chang-Tsung; Ko, Chun-Lin; Kuo, Chien-Nan

doi:10.1109/rfic.2007.380834

Cited by 26 publications

(13 citation statements)

References 3 publications

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“…Using the figure of merit (computed from gain, noise figure and power consumption), this amplifier had better performance than other recently reported frequency-reconfigurable LNAs [12][13][14] (even from those in more advanced technologies). This is because the f T degradation by locating C in at the base-emitter of Q 1 is compensated by the high Q available from the inductors to get low overall power.…”

Section: Low Noise Amplifiermentioning

confidence: 84%

RF-CMOS-MEMS based frequency-reconfigurable amplifiers

Mukherjee

Fedder

2009

2009 IEEE Custom Integrated Circuits Conference

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Section: Low Noise Amplifiermentioning

confidence: 84%

RF-CMOS-MEMS based frequency-reconfigurable amplifiers

Mukherjee

Fedder

2009

2009 IEEE Custom Integrated Circuits Conference

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“…Tuneable structures have been presented, for instance, by means of switched inductors and varactors. [5][6][7][8] In this paper, a novel tuneable matching network is proposed, from which a wide-range tuneable LNA is constructed. The continuously-tuneable frequency function is obtained by controlling the capacitance of the varactors.…”

Section: Introductionmentioning

confidence: 99%

A novel wide-range continuously-tuneable varactor-based matching network for low-noise amplifiers

Guan

Zhang

et al. 2016

HKIE Transactions

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With the increasing demand of wideband or multi-standard wireless communications, low-noise amplifiers (LNAs) with wideband characteristics have become a crucial building block of typical receivers. In the design of LNAs, the major parameters such as gain, return loss and noise figure (NF) heavily rely on the input and output matching. In this paper, a novel tuneable matching network is proposed and a wide-range tuneable LNA operating within the range from 1.5 GHz to 2.3 GHz is constructed with this novel matching network. The capacity of this proposed matching structure to be continuously-tuneable is accomplished by utilising varactors of which the capacitance can be optionally controlled. Furthermore, the design theory of the proposed tuneable matching network is derived. A microstrip prototype of the LNA is simulated, fabricated and measured for verification. The LNA prototype maintains gain and return loss over 10 dB in the frequency range from 1.5 GHz to 2.3 GHz. Additionally, all operating-frequency NFs of the prototype are below 3 dB. The measured results show that the performance of the fabricated prototype is consistent with the simulation, which demonstrates the effectiveness of this proposed new design. IntroductionThe demand for multi-access, diverse applications for wireless communication has derived multiple wireless communication standards. Owing to the multiple wireless communication standards, the design of special transceivers ought to operate over wideband without other performance degradation. It is hard to detect the input signal due to the noisy and complex environment at the front end of a transceiver, where high sensitivity is essential. Moreover, the mode of wideband is susceptible to out-of-band interference. Therefore, tuneable performance covering a wide tuneable range is proposed to transform wideband into multiple narrow-frequency bands.The low-noise amplifier (LNA), a front-end building block, undertakes the task of amplifying the incoming weak wireless signal almost without introducing noise and distortion while determining the sensitivity of the receiver and dramatically influencing the noise performance of the whole system. A multi-standard LNA is required in order to provide a low noise figure (NF), high gain, unconditional stability and low power consumption. Generally, the design of LNAs requires compromise in order to balance these performance criteria. For instance,

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“…Furthermore, high gain, low power, moderate linearity and good matching between input matching frequency and output resonance frequency are also required. Among different LNA structures, wideband [1,2], concurrent [3,4] and reconfigurable [5][6][7][8][9][10][11][12][13][14] LNAs have attracted extensive attention. A wideband LNA has flat gain and low return loss over a wide frequency range.…”

Section: Introductionmentioning

confidence: 99%

“…Discretely-tuned LNAs have attracted more attention than the continuously-tuned ones due to the fact that the discretely-tuned LNA can be easily reconfigured by means of switching on/off passive components [5][6][7]. However, for a larger number of frequency bands, discrete tuning is not suitable, as it is harder to design for good input matching and it necessitates additional passive components, which increases the overall area of the LNA.…”

Section: Introductionmentioning

confidence: 99%

A low-noise amplifier with continuously-tuned input matching frequency and output resonance frequency

Zhu

Boon

Iji

et al. 2013

2013 IEEE International Symposium on Circuits and Systems (ISCAS2013)

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This paper outlines the popular circuit tuning strategies reported for the implementation of reconfigurable low-noise amplifiers (LNAs). It presents a continuously-tuned LNA intended for multi-standard applications as well as enhancing the yield of conventional narrowband LNAs. The presented LNA is designed and implemented in a 0.25µm silicon-on-sapphire (SOS) CMOS process. It uses MOSvaractors at the output to continuously tune its load resonance frequency and input matching frequency without the need of a tunable input network, achieving optimized power consumption and noise figure (NF). The post-layout simulations show that the designed LNA can be continuously tuned from 2.6 GHz to 3.5 GHz. Over this frequency range, an input IP3 of of -12 dB, gain of 17 dB and a NF of less than 2 dB have been achieved with 3.4 mW of power consumption at 1.8V.I.

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A 2.4 to 5.4 GHz Low Power CMOS Reconfigurable LNA for Multistandard Wireless Receiver

Cited by 26 publications

References 3 publications

RF-CMOS-MEMS based frequency-reconfigurable amplifiers

RF-CMOS-MEMS based frequency-reconfigurable amplifiers

A novel wide-range continuously-tuneable varactor-based matching network for low-noise amplifiers

A low-noise amplifier with continuously-tuned input matching frequency and output resonance frequency

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