System design considerations of highly-integrated dab receiver rf front-end

Su, Hsiao Wei; Chi, Baoyong; Wang, Z.H.

doi:10.1109/tce.2005.1561862

Cited by 12 publications

(8 citation statements)

References 16 publications

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“…Among various architectures, the superheterodyne receiver is the most traditional and the most superior one [1][2][3][4][5]. Figure 1 shows the typical architecture of a superheterodyne receiver front-end, where an off-chip image-rejection filter is employed to deeply suppress the image signals located at twice the intermediate frequency (IF) away from the desired signal, before down-conversion.…”

Section: Introductionmentioning

confidence: 99%

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

Chi

Wang

Wong

2011

Analog Integr Circ Sig Process

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A superheterodyne receiver front-end with onchip automatically Q-tuned notch filters is proposed. The front-end includes a differential LNA and a Gilbert downconverter, where each block is coupled with an on-chip image-rejection notch filter to get high image-rejection ratio. Each notch filter is formed by one on-chip LC network and one negative-resistance cross-coupled pair to compensate for the loss of the LC network. The current through the cross-coupled pairs is automatically adjusted by an automatic Q tuning circuit so that the loss of the notch filter is perfectly compensated to achieve a deepest notch. The automatic Q tuning circuit is an analog-digital mixed signal circuit, and successive approximation register algorithm is used to search for the optimum current value. The superheterodyne receiver front-end has been implemented in 0.18 lm CMOS. Experimental results show that the circuit could achieve an image rejection ratio of 75 dB with 105 MHz IF Frequency. The LNA draws 5.86 mA current, and the down-converter draws 1.27 mA current while two image-rejection filters and the master VCO totally draw 363 lA current, all from a 1.8 V power supply.

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Section: Introductionmentioning

confidence: 99%

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

Chi

Wang

Wong

2011

Analog Integr Circ Sig Process

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“…There is not much previous work on the performance of T-DAB consumer receivers. In Canada [1] the performance of L-band receivers was investigated for an audio sub channel of 224 kbps using protection level UEP3 3 [2].…”

Section: Introductionmentioning

confidence: 99%

RF Performance of T-DAB Receivers

Schiphorst

Potman

Hofstra

et al. 2008

IEEE Trans. on Broadcast.

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In every wireless system, the weakest link determines the performance of the network. In this paper the Radio Frequency (RF) performance of both band III and L-band Terrestrial Digital Audio Broadcasting (T-DAB) consumer receivers are discussed. The receivers have been tested based on the EN 50248 standard. The test results show that the average consumer receiver for band III meets the requirements set by EN 50248, except for the non-adjacent interferer experiments. In this experiment, the average consumer receiver performs up to 10 dB worse than required. In addition, the experiments reveal that there is a large difference in performance between consumer receivers. Besides band III, also L-band consumer receivers have been evaluated. The results of the L-band experiments show that the consumer receivers are not capable of decoding a DAB signal with a COST207 rural area channel model in case of T-DAB mode IV. Network operators should for this reason use mode II for the L-band and should expect a larger influence of non-adjacent interference on receiver performance in band III than anticipated based on EN 50248.Index Terms-Adjacent channel interference, band III, consumer receiver, EN 50248, in-band interference, L-band, nonadjacent channel interference, sensitivity, T-DAB.

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“…The critical system design issues of DAB receiver RF front reported in [6] can provide useful practical guidelines to design low cost, compact, low power, highly integrated, and high performance DAB receiver RF front-ends for different applications. The CMOS front-end presented in this paper integrates most of the functions necessary to receive and down convert Band 3 (174~245MHz) signals for further baseband processing.…”

Section: Introductionmentioning

confidence: 99%

A RF front-end for digital audio broadcasting

Cui

Chi

et al. 2007

2007 18th European Conference on Circuit Theory and Design

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A Band 3 receiver RF front-end for digital audio broadcasting (DAB) is described in this paper. The front-end integrates most of the functions necessary to receive and down convert Band 3 (174~245MHz) signals for further baseband processing, including a variable gain LNA, mixers, VGA, IF amplifiers, and PLL. The overall receiver gain is ≥90dB and NF is 4dB. Gain can be controlled over a range of over 95dB and IM3 remains above 60dB up to input levels of -10dBm. The linearity and dynamic range of this system is improved by using an external attenuator that has 30dB variable attenuation. Two AGC circuits (one for the RF part and another one for the IF part) are implemented in this receiver. An on-chip PLL based on integer-N architecture with P and S dividers is designed with integrated VCO generate all the LO frequencies. The prescaler used in the PLL realizes a divideby-64/65 stage. The front-end is designed in a standard 0.18µm CMOS process. The power consumption from a 3.3V power supply is 75mA.

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System design considerations of highly-integrated dab receiver rf front-end

Cited by 12 publications

References 16 publications

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

A superheterodyne receiver front-end with on-chip automatically Q-tuned notch filters

RF Performance of T-DAB Receivers

A RF front-end for digital audio broadcasting

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