Design of Group Delay Time Controller Based on a Reflective Parallel Resonator

Chaudhary, Girdhari; Choi, Heungjae; Jeong, Yongchae; Lim, Jongsik; Kim, Chul Dong

doi:10.4218/etrij.12.0110.0689

Cited by 10 publications

(2 citation statements)

References 13 publications

(15 reference statements)

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“…There are different strategies for choosing a realistic tmax. For example one can use five times the estimated time delay , i.e., propagation delay, of the DUT [41], or five times its maximum group delay [43][44], to accommodate any transient behavior, such as resonant traveling waves dying out (assuming dispersive and lossy materials); therefore a good estimate is: ( 25) Note that without complying with the sampling theorem ( 25), the number of data points in the S-parameter will not ( )…”

Section: ( ) and ( ) H T H T ( 18)mentioning

confidence: 99%

S-Parameter Sampling in the Frequency Domain and its Time-Domain Response

Morales

Agili

Meklachi

2021

IEEE Trans. Instrum. Meas.

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S-parameter characterization of high-speed interconnect components is prone to numerical, modeling, and/or measurement error, due in part to the sampled nature of the data. This is a problem in modern package design where extensive signal integrity simulations are required to validate a system's performance. This paper presents a new method of treating sampled S-parameter data where a criterion is developed to clearly state the minimum number of S-parameter frequency points required to adequately represent an analog physical system in the frequency domain. This criterion is akin to the Nyquist principle when sampling in the time domain. Based on this principle, the proper time domain representation of S-parameters can be obtained using the inverse Fast Fourier Transform (IFFT). However, in order to use the IFFT, the bilinear transformation is applied to the vector fitted Sparameters to place them in the z-domain. From the z-domain, the proper discrete impulse response is obtained. A lower bound, based on the discrete Heisenberg principle, is also offered to deal with frequency-time resolution of the S-parameters. The proposed method is successfully tested in measured and simulated S-parameter data. The usefulness of this method is to accurately represent the time domain behavior of the physical system S-parameter data, i.e. time delay causality, and therefore facilitates the applications of well-developed digital signal processing (DSP) techniques in S-parameter sampled data.

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Section: ( ) and ( ) H T H T ( 18)mentioning

confidence: 99%

S-Parameter Sampling in the Frequency Domain and its Time-Domain Response

Morales

Agili

Meklachi

2021

IEEE Trans. Instrum. Meas.

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“…meander lines delay lines, true-time delay phase shifters [3] or Reflection Type Phase Shifter (RTPS) [4] among many others.…”

Section: A Technology Benchmarkingmentioning

confidence: 99%

Hybrid architecture of a compact, low-cost and gain compensated delay line switchable from 1 m to 250 m for automotive radar target simulator

Arzur

Roy

Pérennec

et al. 2017

2017 European Radar Conference (EURAD)

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Abstract-An hybrid architecture of a compact, low-cost and gain compensated delay line switchable from 1 m to 250 m is presented in this paper. The delay line takes place in a Radar Target Simulator to allow testing automotive radar sensors. A hybridization of different technologies is presented to simulate delays on the entire range with a 20 cm resolution step and a frequency band of 800 MHz. Three technologies, LTCC components, optical fibers and SAW filters, were combined to cover the entire distance range. The whole system also ensures a gain compensation and equalization in the entire frequency band, as well as the simulation of the Radar Cross Section (RCS) of various targets over the entire distance range.

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