A compact 2.4/5.2-GHz CMOS dual-band low-noise amplifier

Lu, Liang-Hung; Hsieh, Hsieh-Hung; Wang, Yushun

doi:10.1109/lmwc.2005.856845

Cited by 83 publications

(5 citation statements)

References 9 publications

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“…It is implemented in the TSMC 0.18 μm RF CMOS process with a supply voltage of 1.8 V, by utilising the capacitor cross-coupling method (Zhuo et al, 2005) with a switched inductor and capacitor (Dao et al, 2007;Li et al, 2004;Lu et al, 2005). Simulations have been performed using Cadence RF Spectre.…”

Section: Simulation Results Of the Proposed Dual-band Lnamentioning

confidence: 99%

“…C 3 and C 4 are also used as the bypass capacitors, which block AC signals into the source of M 3 and M 4 , and then increase the AC gain of the common-source stages. The proposed circuit connects the capacitors C d1 and C d2 to the parallel LC networks in series using the switches M 5 and M 6 (Lu et al, 2005). V ctl1 is the control voltage of the M 5 and M 6 gates.…”

Section: Current-reused Stage With Two-mode Switched Resonatormentioning

confidence: 99%

“…Because the input tuning switch affects the noise performance, we try to avoid the degradation of the noise figure by placing a tuning switch at the inter-stage and output stage. The band selection and gain control are implemented by employing a dual-band LNA topology using the switched resonator at the inter-stage and output, so as to maintain very good noise performance (Dao, Bui, & Park, 2007;Li, Quintal, & O, K.K., 2004;Lu, Hsieh, & Wang, 2005). The proposed LNA can be switched to 2.5-GHz-band or the 3.5-GHz-band operation using the transistor switches at the output stage.…”

Section: Introductionmentioning

confidence: 99%

“…Design of capacitor cross-coupled dual-band LNA using switched current-reuse method Figure 1 shows a schematic of the proposed dual-band LNA. The proposed circuit consists of a capacitor cross-coupled common-gate topology at the input stage for wideinput impedance matching characteristics (Zhuo et al, 2005), a cascode current-reuse structure with switched capacitors for low power consumption (Lu et al, 2005;Toofan et al, 2008;Wang et al, 2009), and an output matching with switched inductors (Dao et al, 2007;Li et al, 2004) (Figure 1). …”

Section: Introductionmentioning

confidence: 99%

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Design of a capacitor cross-coupled dual-band LNA with switched current-reuse technique

Shim¹,

Jeong²

2014

International Journal of Electronics

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This paper presents the design of a 2.5/3.5-GHz dual-band low-power and low-noise CMOS amplifier (LNA), which uses the capacitor cross-coupling technique and current-reuse method with four switches. The proposed LNA uses a single RF block and a broadband input stage, which is a key aspect for the easy reconfiguration of a dual-band LNA. Switching at the inter-stage and output allows for the selection of a different standard. The dual-band LNA attenuates the undesired interference of a broadband gain response circuit, which allows the linearity of the amplifier to be improved. The capacitor cross-coupled gm-boosting method improves the NF and reduces the current consumption. The proposed LNA employs a current-reused structure to decrease the total power consumption. The inter-stage and output switched resonators switch the LNA between the 2.5-GHz and 3.5-GHz bands. The proposed dual-band LNA optimises power consumption by the securing gain, noise figure and linearity. The simulated performance reveals gains of 16.7 dB and 19.6 dB, and noise figures of 3.04 dB and 2.63 dB at the two frequency bands, respectively. The linearity parameters of IIP3 are −5.7 dBm at 2.5 GHz and −9.7 dBm at 3.5 GHz. The proposed dual-band LNA consumes 5.6 mW from a 1.8 V power supply.

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Section: Simulation Results Of the Proposed Dual-band Lnamentioning

confidence: 99%

Section: Current-reused Stage With Two-mode Switched Resonatormentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Design of a capacitor cross-coupled dual-band LNA with switched current-reuse technique

Shim¹,

Jeong²

2014

International Journal of Electronics

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“…The measurement results show good performance at each frequency band at the expense of a larger chip area and higher power dissipation. The conventional methods use the switched inductors or switched capacitors in the input/output networks [9][10][11][12][13][14]. The structures consume low power, but generally degrade the gain and noise figure (NF) because of the insertion loss of their switches.…”

Section: Introductionmentioning

confidence: 99%

Concurrent Dual-Band Inverter-Based Low Noise Amplifier (LNA) for WLAN Applications

2021

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In this paper, a two-stage concurrent dual-band low noise amplifier (DB-LNA) operating at 2.4/5.2-GHz is presented for Wireless Local Area Network (WLAN) applications. The current-reused structure using resistive shunt-shunt feedback is employed to reduce power dissipation and achieve a wide frequency band from low frequency to-5.5-GHz in the inverter-based LNA. The second inverter-based stage is employed to increase the gain and obtain a flat gain over the frequency band. An LC network is also inserted at the proposed circuit output to shape the dual-band frequency response. The proposed concurrent DB-LNA is designed for RF-TSMC 0.18-μm CMOS technology, which consumes 10.8 mW from a power supply of 1.5 V. The simulation results show that the proposed DB-LNA achieves a direct power gain (S 21) of 13.7/14.1 dB, a noise figure (NF) of 4.2/4.6 dB, and an input return loss (S 11) of −12.9/−14.6 dBm at the 2.4/5.2-GHz bands.

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Design of compact microstrip dual‐band bandpass filters with λ/4 stepped‐impedance resonators

Jhuang

Lee

Hsu

2006

Micro & Optical Tech Letters

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This article presents a compact microstrip bandpass filter (BPF) design for the 2.45 and 5.25 GHz wireless local‐area network (WLAN) applications. U‐shaped quarter‐wavelength stepped‐impedance resonators (λ/4 SIRs), for which the circuit size is small and the second resonant frequency can be tuned over a wide range, are adopted in the BPF design. It is shown that the first spurious passbands of the resultant filters are farther away from their second passbands than are those of the corresponding filters using half‐wavelength SIRs. Experiments on a second‐order and a fourth‐order BPF are conducted for validating the filter performance. Good agreement between the measured and the simulated results are observed. © 2006 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 164–168, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22094

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A compact 2.4/5.2-GHz CMOS dual-band low-noise amplifier

Cited by 83 publications

References 9 publications

Design of a capacitor cross-coupled dual-band LNA with switched current-reuse technique

Design of a capacitor cross-coupled dual-band LNA with switched current-reuse technique

Concurrent Dual-Band Inverter-Based Low Noise Amplifier (LNA) for WLAN Applications

Design of compact microstrip dual‐band bandpass filters with λ/4 stepped‐impedance resonators

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