A multi-band low noise amplifier with wide-band interference rejection improvement

Wang, Jhen-Ji; Chen, Duan-Yu; Wang, San-Fu; Wei, Rongshan

doi:10.1016/j.aeue.2015.12.010

Cited by 16 publications

(9 citation statements)

References 18 publications

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“…It is important to select an appropriate topology for designing an input tuning LNA. Common gate (CG) topology was implemented in [8,9] to get the wideband response and stable operation. However, the topology is not desired for designing an input tuning LNA due to the dependence of gain and NF on transconductance g m .…”

Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Continuously Tunable Low Noise Amplifier for Software Defined Radio

Aneja

2019

Sensors

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This paper presents the design and analysis of a continuously tunable low noise amplifier (LNA) with an operating frequency from 2.2 GHz to 2.8 GHz. Continuous tuning is achieved through a radio frequency impedance transformer network in the input matching stage. The proposed circuit consists of four stages, namely transformer stage, tuning stage, phase shifter and gain stage. Frequency tuning is controlled by varying output current through bias voltage of tuning stage. The circuit includes an active phase shifter in the feedback path of amplifier to shift the phase of the amplified signal. Phase shift is required to further achieve tunability through transformer. The LNA achieves a maximum simulated gain of 18 dB. The LNA attains a perfect impedance match across the tuning range with stable operation. In addition, it achieves a minimum noise figure of 1.4 dB.

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Section: Introductionmentioning

confidence: 99%

Design and Analysis of a Continuously Tunable Low Noise Amplifier for Software Defined Radio

Aneja

2019

Sensors

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“…The wireless communication system has different communication identification of standards for various applications, such as worldwide interoperability for microwave access (WiMAX), HSPA, HSPA+, 3G WCDMA and The modern high-data-rate communication systems required wide band frequency range for the PA to support different wireless standards [4]. However, the conventional narrow-band LNAs has poor performance to meet the latest wireless standards [5]. The narrow-band multimode frequently implemented with some narrow band PAs for each frequency band, which area and the cost [6].…”

Section: Introductionmentioning

confidence: 99%

“…The narrow-band multimode frequently implemented with some narrow band PAs for each frequency band, which area and the cost [6]. Wideband width frequency signal has received much attention in the recent wireless communication system due to its go quality to satisfy the different standards at time [5]. The new generation wireless communication system deployed 800 MHz to 3GHz range of frequency for various applications [7].…”

Section: Introductionmentioning

confidence: 99%

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Wideband Width Impedance Matching Topologies for PA Applications

Thangasamy¹,

Suresh²,

Luckose³

2018

IJTSRD

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In this paper, the design of a wideband width impedance matching topology for Power Amplifier (PA) applications has introduced. The design topology has implemented with single, double and triple stages to demonstrate the wideband width frequency range for input and output matching network section of the PA amplifier. Each stages of the proposed matching circuit has LC filter with high and low pass design configuration. The single stage configuration provides the wide band frequency of 1.07 GHz to 2.094 GHz at-74 dB gain. The frequency range of-0.75 GHz to 2.95 GHz has obtained in double stage configuration with-28 dB, 40 dB gain. The triple stage offers a wide frequency range of 0.59 GHz to 3.7 GHz with-17 dB, 96 dB,-55 dB and-30 dB gain at the cut off frequency of 1.5 GHz which is suitable for PA applications.

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“…It is important to choose an appropriate topology when designing a multiband LNA. Common gate topology has been implemented in [3,4] to get the wideband response and stable operation. However, the topology is not perfectly suitable for designing an input tuning LNA due to the dependence of gain and NF on transconductance gm.…”

Section: Introductionmentioning

confidence: 99%

Design of Continuously Tunable Low Noise Amplifier for Multiband Radio

Aneja

2017

2017 Mediterranean Microwave Symposium (MMS)

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this paper presents the design of continuously tunable low noise amplifier with frequency tuning range from 2.2 to 2.8 GHz. The amplifier achieves input matching and tunability through a transformer based input matching network. The proposed circuit uses an inductively degenerated common source cascode amplifier to design the amplification stage. The circuit includes a phase shifter circuit to shift the phase of the input signal to achieve tunability through transformer. The LNA achieves a maximum gain of more than 17dB in the entire tuning range. The LNA attains a perfect impedance match across the tuning range and has a stable operation. In addition, it achieves a low noise figure ranging from 1.4dB to 5.2dB.

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A multi-band low noise amplifier with wide-band interference rejection improvement

Cited by 16 publications

References 18 publications

Design and Analysis of a Continuously Tunable Low Noise Amplifier for Software Defined Radio

Design and Analysis of a Continuously Tunable Low Noise Amplifier for Software Defined Radio

Wideband Width Impedance Matching Topologies for PA Applications

Design of Continuously Tunable Low Noise Amplifier for Multiband Radio

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