A comparison of analog front end architectures for digital receivers

Pekau, H.; Haslett, J.W.

doi:10.1109/ccece.2005.1557162

Cited by 18 publications

(8 citation statements)

References 11 publications

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“…Digital Converter)까지 이어지는 수신기 구조는 레이 더 시스템에 널리 사용되고 있다 [1], [2] . 크기가 작고 소모 전력이 적은 디지털 칩들이 개발되면서, 한정 된 공간에 최적의 성능을 내야 하는 레이더 수신기는 많은 부분을 FPGA(Field Programmable Gate Array) 등의 디지털 소자들이 담당하고 있다 [3]～ [5] .…”

Section: ⅰ 서 론 Rf 전단(Front-end)에서 시작해서 Adc(analog Tounclassified

Design and Measurement of Active Phased Array Radar Digital Receiver

Kim

Lee²,

Lee³

et al. 2011

The Journal of Korean Institute of Electromagnetic Engineering

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Active phased array antenna structure is used for modern multi-function radars. To search targets in high clutter environment, the radar receiver needs high dynamic range performance. Though active phased array antenna structure lead to increase of SNR, the SFDR is not increased. In this paper, high SFDR receiver of X-band active phased array radar was designed and manufactured. One channel digital receiver is connected to 32 T/R modules and one PCB assembly is composed to 2 channel digital receivers with RF part, ADC part, LO distribution part and digital down conversion part. A commercial FIFO board was used for digital receiver measurement about major performance in digital output signal condition. The measured digital receiver gain and SFDR is 33 dB and more than 81 dBc each.

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Section: ⅰ 서 론 Rf 전단(Front-end)에서 시작해서 Adc(analog Tounclassified

Design and Measurement of Active Phased Array Radar Digital Receiver

Kim

Lee²,

Lee³

et al. 2011

The Journal of Korean Institute of Electromagnetic Engineering

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“…System is designed with all-digital receiver theory [10] , as shown in Fig. 3, the modulation is moved into digital domain.…”

Section: System Designmentioning

confidence: 99%

Wavelet packet multicarrier system based on MIMO antennae in AWGN

Liu

Hou

Sun

et al. 2008

2008 International Conference on Neural Networks and Signal Processing

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1In order to solve the shortage of wireless resources in next-generation mobile communications, a wavelet packet multicarrier system is built based on multiple input multiple output(MIMO) antennae, which integrates the advantages of multiple antennae channel capacity and the superiority of the translation orthogonality of the wavelet packet basis function. The bit error rate(BER) performance of the proposed system is verified by simulation in AWGN wireless channel, that it has the performance advantage, which provides a reference for physical layer standards in the next generation mobile communications.

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“…1 Digital receiver directly samples the intermediate frequency (IF) or even radio frequency (RF) signal and has been proved to own much higher stability and more flexibility than conventional analog receiver. 2,3 Most of the existing digital receiver utilize band-pass sampling when digitizing the radar echoes. Band-pass sampling is a special case in the frame of Shannon-Nyquist sampling theory, it requires that the sampling rate must be at least two times of the bandwidth of the analog signal.…”

Section: Introductionmentioning

confidence: 99%

Digital orthogonal receiver for wideband radar based on compressed sensing

Hou

Liu

Chen

et al. 2014

Emerging Technologies in Security and Defence II; And Quantum-Physics-Based Information Security III

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Digital orthogonal receiver is one of the key techniques in digital receiver of soft radar, and compressed sensing is attracting more and more attention in radar signal processing. In this paper, we propose a CS digital orthogonal receiver for wideband radar which utilizes compressed sampling in the acquisition of radar raw data. In order to reconstruct complex signal from sub-sampled raw data, a novel sparse dictionary is proposed to represent the real-valued radar raw signal sparsely. Using our dictionary and CS algorithm, we can reconstruct the complexvalued radar signal from sub-sampled echoes. Compared with conventional digital orthogonal radar receiver, the architecture of receiver in this paper is more simplified and the sampling frequency of ADC is reduced sharply. At the same time, the range profile can be obtained during the reconstruction, so the matched filtering can be eliminated in the receiver. Some experiments on ISAR imaging based on simulated data prove that the phase information of radar echoes is well reserved in our orthogonal receiver and the whole design is effective for wideband radar.

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A comparison of analog front end architectures for digital receivers

Cited by 18 publications

References 11 publications

Design and Measurement of Active Phased Array Radar Digital Receiver

Design and Measurement of Active Phased Array Radar Digital Receiver

Wavelet packet multicarrier system based on MIMO antennae in AWGN

Digital orthogonal receiver for wideband radar based on compressed sensing

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