A WCDMA, GSM/GPRS/EDGE Receiver Front End without Interstage SAW Filter

Yanduru, N.K.; Bhagavatheeswaran, S.; Chen, Chien‐Chung; Dulger, F.; Fang, Sher-Jiun; Ho, Yo-Chuol; Low, Kah Mun

doi:10.1109/rfic.2006.1651078

Cited by 17 publications

(8 citation statements)

References 5 publications

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“…Figure 10.13 is a block diagram of a direct-conversion W-CDMA, GGE dualmode receiver designed in 90-nm CMOS [35]. The design is for the DCS band (1805 to 1880 MHz), and the corresponding TX frequency is 95 MHz (1710 to 1785 MHz) below the RF frequency.…”

Section: Figure 1011mentioning

confidence: 99%

Reduced External Hardware and Reconfigurable RF Receiver Front Ends for Wireless Mobile Terminals

Hueber

Staszewski²

2010

Multi‐Mode/Multi‐Band RF Transceivers for Wireless Communications

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Section: Figure 1011mentioning

confidence: 99%

Reduced External Hardware and Reconfigurable RF Receiver Front Ends for Wireless Mobile Terminals

Hueber

Staszewski²

2010

Multi‐Mode/Multi‐Band RF Transceivers for Wireless Communications

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“…12 contributes to and hence this value experiences significant change not only over process and temperature variation, but also over different blocker conditions. The actual IER expression is given in (10) for phase mismatch only and in (11) when dc gain mismatch exists as well. In (11), , , , and denote the baseband equivalent dc gains of the main and alternate I and Q channels.…”

Section: Compensating For I-q Mismatch In Lms-based Adaptive Equalmentioning

confidence: 99%

Equalization of Third-Order Intermodulation Products in Wideband Direct Conversion Receivers

Keehr

Hajimiri

2008

IEEE J. Solid-State Circuits

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Abstract-This paper reports a SAW-less direct-conversion receiver which utilizes a mixed-signal feedforward path to regenerate and adaptively cancel IM3 products, thus accomplishing system-level linearization. The receiver system performance is dominated by a custom integrated RF front end implemented in 130-nm CMOS and achieves an uncorrected out-of-band IIP3 of 7.1 dBm under the worst-case UMTS FDD Region 1 blocking specifications. Under IM3 equalization, the receiver achieves an effective IIP3 of +5.3 dBm and meets the UMTS BER sensitivity requirement with 3.7 dB of margin.

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“…2. One prerequisite for this concept are reconfigurable multimode receivers [2,3,4,5,6,7], because the same receiver path has to be capable to handle GSM and WCDMA signals. Thus the number of receivers can be reduced by two resulting in a total number of five receivers.…”

Section: B Dual Mode Receiversmentioning

confidence: 99%

“…A possible next step could be the attempt to remove the interstage filters in all WCDMA bands [6]. Thus, the Rx filter of the WCDMA duplexer has not only to fulfill the tightened WCDMA specifications, but also the respective GSM specifications.…”

Section: Dual Mode Receivers Without Rx Filtersmentioning

confidence: 99%

Concepts for RF Front-Ends for Multi-Mode, Multi-Band Cellular Phones

Bauernschmitt¹,

Block²,

Hagn³

et al. 2007

2007 European Conference on Wireless Technologies

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This paper describes front-end architectures of modern multi-mode, multi-band cellular phones and will discuss the requirements on RF filtering in such applications. Special focus will be on dual mode (GSM and WCDMA) cellular phones with four GSM and three WCDMA bands. On the one hand driven by forward integration -e.g., from PA function via transmit front-end to a fully integrated radio -on the other hand influenced by new requirements of 3G systems and the integration of complementary access, filtering components such as SAW and BAW filters have to solve several increased requirements simultaneously. New technologies are required to follow the demand of increased RF performance, reduced PCB area consumption and continuously decreasing component costs.

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A WCDMA, GSM/GPRS/EDGE Receiver Front End without Interstage SAW Filter

Cited by 17 publications

References 5 publications

Reduced External Hardware and Reconfigurable RF Receiver Front Ends for Wireless Mobile Terminals

Reduced External Hardware and Reconfigurable RF Receiver Front Ends for Wireless Mobile Terminals

Equalization of Third-Order Intermodulation Products in Wideband Direct Conversion Receivers

Concepts for RF Front-Ends for Multi-Mode, Multi-Band Cellular Phones

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