Resistive-Feedback CMOS Low-Noise Amplifiers for Multiband Applications

Perumana, Bevin; Zhan, J.-H.C.; Taylor, S.S.; Carlton, Brent; Laskar, J.

doi:10.1109/tmtt.2008.920181

Cited by 110 publications

(55 citation statements)

References 12 publications

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“…By using the additional resistance, the active feedback network reduces Q factor of the output matching network for bandwidth extension. For shunt-feedback LNA, the noise figure (NF) can be calculated as [7].…”

Section: Circuit Designmentioning

confidence: 99%

A COMPACT WIDEBAND MATCHING 0.18-Î¼m CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEEDBACK TECHNIQUE

Li¹,

Lin²,

Houng³

et al. 2010

PIER C

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Abstract-This work presents an ultra-wideband (UWB) low noise amplifier (LNA) with active shunt-feedback technique for wideband and flat gain by using standard 0.18 µm CMOS processes. Different from past resistive shunt-feedback technique, the capacitor supersedes by a transistor in active shunt-feedback technique. The active shuntfeedback provides input matching generating a 50 Ω real part with proper design and achieves flat gain from 2.5 GHz to 12 GHz. The UWB LNA achieved 11.4 ± 0.2 dB gains, 4.5 ∼ 5.2 dB noise figure (NF), 13.5 mW power consumption at frequency 3.1 GHz to 10.6 GHz, −15 dBm of 1-dB compression point (P 1dB ), and −3 dBm of input third intercept point (IIP3) at 6 GHz. The chip size including pads is only 0.6 × 0.5 mm 2 .

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Section: Circuit Designmentioning

confidence: 99%

A COMPACT WIDEBAND MATCHING 0.18-Î¼m CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEEDBACK TECHNIQUE

Li¹,

Lin²,

Houng³

et al. 2010

PIER C

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“…In modern communication system, multiple band application brought much more advantage [1,2]. Semi-loop stepped-impedance resonators were used to design dual band power divider [3].…”

Section: Introductionmentioning

confidence: 99%

A New Dual Band Balanced-to-Balanced Power Divider

Xia¹,

Mao²

2013

PIER C

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Abstract-In this paper, a new dual band balanced-to-balanced power divider is proposed. By using the dual frequency 90 • phase shifter based T model, the proposed balanced-to-balanced power divider can be deduced. By using the method in our previous work, the dual band balanced-to-balanced power divider could be designed with 1 : 1 power division. This balanced-to-balanced power divider is implemented on microstrip structure. Comparing the results calculated in analytical method with that simulated by the full-wave electromagnetic simulator, and that measured by the network analyzer, the final results show that they have a good mixed mode performance. The pass band 1 is from 2.395 GHz to 2.550 GHz, and the pass band 2 is from 5.245 GHz to 5.30 GHz. The maximum isolations for pass band 1 and pass band 2 are 17.8 dB and 17.6 dB, respectively.

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“…Even if noise is not an issue, feedback can offer higher linearity improvement compared to simply attenuating the signal at the input of the amplifier because the generated distortion components are further suppressed by the available loop gain. For instance, assuming a loop gain of T o at all frequencies of interest, it can be shown that the IIP3 of a closed loop amplifier is improved by a factor equal to (1 + T o ) 3 2 compared to its open loop counterpart [13]. In contrast, attenuating the signal by an amount equal to T o at the input of the open loop amplifier only improves IIP3 by a factor of 1 + T o .…”

Section: Negative Feedbackmentioning

confidence: 99%

“…Thus, negative feedback has been successfully employed in RF circuits mainly where a low loop gain is required. One such example is employing resistive shunt feedback to design compact Low Noise Amplifiers (LNAs) which provide a wideband 50Ω match at the input of multi-standard receivers [13,14]. In such cases, the matching conditions dictate a loop gain of about unity, which corresponds to a modest improvement in IIP3 (roughly 4.5 dB).…”

Section: Negative Feedbackmentioning

confidence: 99%

“…Design parameters: G lna = 90.7mS, G fb = 63.7mS, R f = 1kΩ, ω hpf = 2π × 27.5 × 10 6 and ω dom = 2π × 50 × 10 6 aiming for a wide tuning range and a compact design, the use of such techniques is undesirable due to their inherent narrowband nature and the large die area required for on-chip inductors. As such, techniques like resistive matching [13,14] or noise canceling [40,41] present a better alternative.…”

Section: Noise Performancementioning

confidence: 99%

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Frequency translation loops for RF filtering : theory and design

Youssef¹

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Modern wireless transceivers are required to operate over a wide range of frequencies in order to support the multitude of currently available wireless standards. Wideband operation also enables future systems that aim for better utilization of the available spectrum through dynamic allocation. As such, co-existence problems like harmonic mixing and phase noise become a main concern. In particular, dealing with interference scenarios is crucial since they directly translate to higher linearity requirements in a receiver.With CMOS driving the consumer electronics market due to low cost and high level of integration demands, the continued increase in speed, mainly intended for digital applications, offers new possibilities for RF design to improve the linearity of front-end receivers. Furthermore, the readily available switches in CMOS have proven to be a viable alternative to traditional active mixers for frequency translation due to their high linearity, low flicker noise, and, most recently recognized, their impedance transformation properties.In this thesis, frequency translation feedback loops employing passive mixers are explored as a means to relax the linearity requirements in a front-end receiver by providing channel selectivity as early as possible in the receiver chain. The proposed receiver architecture employing such loop addresses some of the most common problems of integrated RF filters, while maintaining their inherent tunability.Through a simplified and intuitive analysis, the operation of the receiver is first examined and the design parameters affecting the filter characteristics, such as bandwidth and stop-band rejection, are determined. A systematic procedure for analyzing the linearity of the receiver reveals the possibility of LNA distortion canceling, which decouples the trade-off between noise, linearity and harmonic radiation.Next, a detailed analysis of frequency translation loops using passive mixers is developed. Only highly simplified analysis of such loops is commonly available in literature. The analysis is based on an iterative procedure to address the complexity introduced by the presence of LO harmonics in the loop and the lack of reverse isolation in the mixers, and results in highly accurate expressions for the harmonic and noise transfer functions of the system. Compared to the alternative of applying iii Abstract general LPTV theory, the procedure developed offers more intuition into the operation of the system and only requires the knowledge of basic Fourier analysis. The solution is shown to be capable of predicting trade-offs arising due to harmonic mixing and loop stability requirements, and is therefore useful for both system design and optimization.Finally, as a proof of concept, a chip prototype is designed in a standard 65nm CMOS process. The design occupies < 0.06mm 2 of active area and utilizes an RF channel-select filter with a 1-to-2.5GHz tunable center frequency to achieve 48dB of stop-band rejection and a wideband IIP3 > +12dBm. As such, the work present...

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Resistive-Feedback CMOS Low-Noise Amplifiers for Multiband Applications

Cited by 110 publications

References 12 publications

A COMPACT WIDEBAND MATCHING 0.18-Î¼m CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEEDBACK TECHNIQUE

A COMPACT WIDEBAND MATCHING 0.18-Î¼m CMOS UWB LOW-NOISE AMPLIFIER USING ACTIVE FEEDBACK TECHNIQUE

A New Dual Band Balanced-to-Balanced Power Divider

Frequency translation loops for RF filtering : theory and design

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