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A Low-Cost and Low-Power CMOS Receiver Front-End for MB-OFDM Ultra-Wideband Systems要该文全文，更换别的论文，或要中英文对照都可以找我Mahim Ranjan, Member, IEEE, and Lawrence E. Larson, Fellow, IEEE0Abstract—This paper presents an RF receiver front-end for MB-OFDM-based ultra-wideband (UWB) systems. The receiver occupies only in a CMOS process and consists of a low-noise amplifier, downconverter and a bandpass filter. There are no on-chip inductors and the receiver requires no off-chip matching components. The measured receiver gain is 21 dB, noise figure is less than dB, input IIP3 is dBm, and the receiver consumes mA from a V supply. The receivercovers all the MB-OFDM bands from to 8 Terms—CMOS, distortion, OFDM, receiver, ultra wideband, . INTRODUCTIONULTRA-WIDEBAND (UWB)multi-band orthogonal frequency-division multiplexing (MB-OFDM) systems have been proposed as an emerging solution to wireless communicationapplications requiring high data rates (up to 480 Mb/s) over short distances. In one proposed version [1], the carrier, with a bandwidth of 528 MHz, can hop to one of 14 channels（2904+528n,n=123…14）, divided into four groups of three channels and one group of two channels. This representative time-frequency interleaving for a Group 1-only systemis depicted in Fig. 1. Design of a receiver for such a systempresents many challenges due to the wide bandwidth of the RF front-end. However, to assure the widest possible adoption, RF portions of these systems should consume little DC power and die area, and be implemented in a standard CMOS process. These last requirements argue against the use of on-chip inductors wherever theUWBfront-end intrinsically possesses a wide bandwidth, it is open to reception of undesired narrowband signals such as a/b/g and the recently proposedWiMAX [2] systems, as shown in Fig. 2. Although OFDM systems are less susceptible to relatively narrowband jammers, nonlinearities in the receiver can result in jammer cross-modulation with wideband input signals, resulting in reduced signal-to-noise ratio (SNR) and a degradation in system performance [3]. In addition, received wideband signals (from other UWB transmitters) can intermodulate and the resulting products can land in a desired channel. Since the system is inherently wideband, harmonic distortion of a single unwanted UWB transmitter can also produce in-band distortion products and reduce the SNR. For the system to successfully operate in such a hostile environment, the linearity specifications of the receiver need to include these distortion effects. Fig. 1. Representative time-frequency interleaving pattern of a Group 1MB-OFDM signal [1]. Fig. 2. Representative spectrum at an MB-OFDM receiver paper describes a UWB heterodyne receiver front-end that is designed to minimize the effects of wideband jammers from a variety of undesired sources [4]. In addition, the receiver is designed to minimize silicon area, so on-chip inductors are not employed. The receiver architecture is presented in Section II. Specifications for the receiver are derived in Section III. Detailed block design is presented in Sections IV–VI. Layout and packaging of the chip is discussed in Section VII. Measured results are presented in Section VIII, followed by a conclusion in Section . RECEIVER ARCHITECTUREWhen it comes to designing a low-power and low-cost receiver, the traditional choice is a direct conversion architecture. However, a direct conversion UWBreceiver, while attractive for power consumption and simplicity of its local oscillator (LO) scheme [5], [6], has a well-known problem of time-varying DC offset and sensitivity to narrowband jammers. A DC offset at the output of the receiver can degrade the SNR of the digitized baseband signal. In addition, it can introduce second-order distortion in the baseband signal, which further degrades the SNR. A Low-Cost and Low-Power CMOS Receiver Front-End for MB-OFDM Ultra-Wideband SystemsMahim Ranjan, Member, IEEE, and Lawrence E. Larson, Fellow, IEEE0Abstract—This paper presents an RF receiver front-end for MB-OFDM-based ultra-wideband (UWB) systems. The receiver occupies only in a CMOS process and consists of a low-noise amplifier, downconverter and a bandpass filter. There are no on-chip inductors and the receiver requires no off-chip matching components. The measured receiver gain is 21 dB, noise figure is less than dB, input IIP3 is dBm, and the receiver consumes mA from a V supply. The receivercovers all the MB-OFDM bands from to 8 Terms—CMOS, distortion, OFDM, receiver, ultra wideband, . INTRODUCTIONULTRA-WIDEBAND (UWB)multi-band orthogonal frequency-division multiplexing (MB-OFDM) systems have been proposed as an emerging solution to wireless communicationapplications requiring high data rates (up to 480 Mb/s) over short distances. In one proposed version [1], the carrier, with a bandwidth of 528 MHz, can hop to one of 14 channels（2904+528n,n=123…14）, divided into four groups of three channels and one group of two channels. This representative time-frequency interleaving for a Group 1-only systemis depicted in Fig. 1. Design of a receiver for such a systempresents many challenges due to the wide bandwidth of the RF front-end. However, to assure the widest possible adoption, RF portions of these systems should consume little DC power and die area, and be implemented in a standard CMOS process. These last requirements argue against the use of on-chip inductors wherever theUWBfront-end intrinsically possesses a wide bandwidth, it is open to reception of undesired narrowband signals such as a/b/g and the recently proposedWiMAX [2] systems, as shown in Fig. 2. Although OFDM systems are less susceptible to relatively narrowband jammers, nonlinearities in the receiver can result in jammer cross-modulation with wideband input signals, resulting in reduced signal-to-noise ratio (SNR) and a degradation in system performance [3]. In addition, received wideband signals (from other UWB transmitters) can intermodulate and the resulting products can land in a desired channel. Since the system is inherently wideband, harmonic distortion of a single unwanted UWB transmitter can also produce in-band distortion products and reduce the SNR. For the system to successfully operate in such a hostile environment, the linearity specifications of the receiver need to include these distortion effects. .........................
分区 中文分类 刊名简称 1 工程技术 ACTA MATER 1 工程技术 ADV MATER 1 工程技术 AICHE J 1 工程技术 ANNU REV
佳丽子伊 3人参与回答 2023-12-08 图书馆的电子期刊主要有：中文电子期刊类：中国期刊网；万方数字化期刊；人大复印报刊资料、龙源期刊网。 外文电子期刊类：ScienceDirect(Elsevier
a淡淡小雨 5人参与回答 2023-12-07 电子学报是中文核心期刊。 《电子学报》是1962年创办的中文学术期刊，月刊，中国电子学会主办，中国科学技术学会主管。学报主要刊登电子与信息科学及相邻领域的原始科
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Honeychurch 3人参与回答 2023-12-11 看你发的是哪类的期刊。还有就是要看你文章写的好不好。首先，核心期刊的质量要求是比较高的。投稿核心期刊应该注意论文撰写的质量。如果是工科核心论文，国内的核心期刊安
阳光靖好 5人参与回答 2023-12-10 