A 115-mW, 0.5-μm CMOS GPS receiver with wide dynamic-range active filters

Shaeffer, D.K.; Shahani, A.R.; Mohan, S.S.; Samavati, H.; Rategh, H.R.; Hershenson, M. del Mar; Xu, Min; Yue, C. Patrick; Eddleman, D.J.; Lee, T.H.

doi:10.1109/4.735706

Cited by 95 publications

(30 citation statements)

References 22 publications

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“…Meyer et al reported one of the early LNAs made on a low-resistivity (i.e., lossy) silicon substrate using bipolar junction transistors for commercial cellular applications [17], where very low NF is not needed. Recently, a large number of efforts have been reported to use the advanced digital CMOS processes for single-chip implementation of the complete radio transceiver [18], [19]. Significant progress in CMOS LNA design has been made during the last several years where more recent results, such as [20], demonstrate significant improvements over the earlier works [21]- [23] and show that CMOS LNAs can be a worthy competitor for compound semiconductor implementations in many portable applications.…”

Section: A Technologymentioning

confidence: 99%

See 1 more Smart Citation

Concurrent multiband low-noise amplifiers-theory, design, and applications

Hashemi

Hajimiri

2002

IEEE Trans. Microwave Theory Techn.

393

170

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Section: A Technologymentioning

confidence: 99%

“…Assuming the amplifier output has a third-order polynomial dependence on the input (19) we can calculate the in-band and cross-band 1-dB compression points (20a) (20b)…”

Section: E Concurrent Multiband Lna Linearity Measuresmentioning

confidence: 99%

Concurrent multiband low-noise amplifiers-theory, design, and applications

Hashemi

Hajimiri

2002

IEEE Trans. Microwave Theory Techn.

393

170

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“…Table 2 shows all possible acceptable solutions for set one. For set Two, (14) shows that the frequency N1Yf o is above L1 band and N2Yf o is inside the frequency range between L1 and L2. Set Two solutions are exactly the same as Set One.…”

Section: Receiver Frequency Planmentioning

confidence: 96%

“…Further amplification in the limiter amplifier may make the IF strip output vulnerable to DC saturation. Inter-stage AC coupling can solve this problem [14]. But, the AC coupling caps should be large enough to represent a short circuit in the IF band of interest, i.e, from 3 to 5 MHz.…”

Section: Complex Filter and Vgamentioning

confidence: 99%

A crystal-tolerant fully integrated CMOS low-IF dual-band GPS receiver

Elesseily¹,

Ali²,

Sharaf³

2009

Analog Integr Circ Sig Process

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This paper presents the design of a dual-band L1/L2 GPS receiver, that can be easily integrated in portable devices (mainly GSM mobile phones). For the ease of integration with GSM wireless systems the receiver can tolerate most of the common GSM crystals, besides the GPS crystals, this will eliminate the need to use another crystal on board. A new frequency plan is presented to satisfy this requirement. A low-IF receiver architecture is used for dual-band operation with analog on-chip image rejection. The receiver is composed of a narrow-band LNA for each band, dual down-conversion mixers, a variablegain channel filter, a 2-bit analog-to-digital converter, and a fully integrated frequency synthesizer including an on-chip VCO and loop filter. The complex filter can accept IF frequency variation of 10% around 4.092 MHz which allows the use of the commonly used 10/13/26 MHz GSM crystals and all the GPS crystals. The synthesizer generates the LO signals for both L1/L2 bands with an average phase noise of -95 dBc/Hz. The receiver exhibits maximum gain of 112 and 115 dB, noise figures of 4 and 3.6 dB, and input compression points of -76 and -79 dBm for L1 and L2, respectively. An on-chip variable-gain channel filter provides IF image rejection greater than 25 dB and gain control range over 80 dB. The receiver is designed in 0.13 lm CMOS technology and consumes 18 mW from a 1.2-V supply.

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“…The timely availability of lowpower and low-cost hybrid receivers is a factor of great importance in the successful placement of Galileo in the consumer sector. To enable the deployment of GNSS capabilities into consumer products, an integrated receiver should minimize the number of off-chip components, particularly the number of expensive passive filters [2]- [4]. However, receiver architectures which provide high levels of integration like the zero-IF and low-IF topologies suffer from RF impairments which hinder their widespread use [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

Analysis and Compensation of RF Impairments for Next Generation Multimode GNSS Receivers

Cetin

Kale

Morling

2007

2007 IEEE International Symposium on Circuits and Systems (ISCAS)

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Abstract-Global Navigation Satellite System (GNSS) receivers require solutions that are compact, cheap and low-power, in order to enable their widespread proliferation into consumer products. Furthermore, interoperability of GNSS with nonnavigation systems, especially communication systems will gain importance in providing the value added services in a variety of sectors, providing seamless quality of service for users. An important step into the market for Galileo is the timely availability of these hybrid multi-mode terminals for consumer applications. However, receiver architectures that are amenable to high-levels of integration will inevitably suffer from RF impairments hindering their easy widespread use in commercial products. This paper studies and presents analytical evaluations of the performance degradation due to the RF impairments and develops algorithms that can compensate for them in the DSP domain at the base band with complexity-reduced hardware overheads, hence, paving the way for low-power, highly integrated multi-mode GNSS receivers.

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A 115-mW, 0.5-μm CMOS GPS receiver with wide dynamic-range active filters

Cited by 95 publications

References 22 publications

Concurrent multiband low-noise amplifiers-theory, design, and applications

Concurrent multiband low-noise amplifiers-theory, design, and applications

A crystal-tolerant fully integrated CMOS low-IF dual-band GPS receiver

Analysis and Compensation of RF Impairments for Next Generation Multimode GNSS Receivers

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