Microwave Filter Design in the Time Domain

Sobhy, N.I.; Hosny, E.A.

doi:10.1109/mwsym.1981.1129819

Cited by 2 publications

(3 citation statements)

References 3 publications

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“…The corresponding time domain transient response and its envelope are obtained applying equations (3) and (5). In order to perform a comprehensive study of the filter non-idealities, a simultaneous variation of s t and s A has been computed, with an average of 100 realizations per investigated parameter set, and the effect of this simultaneous variation on P, t FWHM , and t 0.1 has been evaluated with equations (7), (8) and (9). …”

Section: Analysis Of Filter Non-idealitiesmentioning

confidence: 99%

“…Also in [7], an exhaustive analysis of the approximation of the filter impulse response to a particular function with a polezero analysis of the filter transfer function has been published. Moreover in [8] an example of filter design in the time domain has been provided using the commensurate network theory, but without investigating the filter non-idealities. An exhaustive analysis of the filter time domain behavior has been performed in [9].…”

Section: Introductionmentioning

confidence: 99%

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Impact of the UWB Filter Frequency Domain Non-Idealities on the Filter Transient Response

Pancera¹,

Sturm²,

Zwick³

et al. 2008

Frequenz

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In this article an approach to the characterization of the behavior of UWB filters in the time domain is presented. In particular, the relationship between the filter frequency domain non-idealities (such as variations of the filter group delay time and ripple in the frequency mask) and their effect on the corresponding filter time domain behavior (transient response) are analyzed.In a novel approach the distortion introduced by a filter with a randomly generated group delay and filter frequency mask are investigated. It is discovered that there is a relatively sharp bound on values of the standard deviation of the filter group delay time and standard deviation of the ripple in the frequency filter mask below which the distortion in the time domain is negligible. The parameters are focused on UWB filters for the European UWB regulations operating in the 6 -8.5 GHz frequency range.

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Section: Analysis Of Filter Non-idealitiesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Impact of the UWB Filter Frequency Domain Non-Idealities on the Filter Transient Response

Pancera¹,

Sturm²,

Zwick³

et al. 2008

Frequenz

View full text Add to dashboard Cite

show abstract

“…In [10,11], scattering parameters were estimated for the design of microwave filters in the frequency domain. Finally, time-domain design was applied to microwave filters in [12], but using commensurate line lengths; in other words, the length of the transmission line is not a variable, which can generate a narrowband design.…”

Section: Introductionmentioning

confidence: 99%

UWB microstrip filter design using a time-domain technique

Tekin

2005

Microw. Opt. Technol. Lett.

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propagates, and the OMT for the data channel receives both the horizontal and vertical polarizations. We model the coupler (Fig. 3) by using the FDTD for only one pair of these rectangular guides. The size of the holes is optimized, based on several FDTD runs, in order to achieve proper coupling. NUMERICAL AND MEASUREMENT RESULTSThe simulation results obtained by using the Body of Revolution FDTD code for the corrugated horn are shown in Figures 6 and 7.The symmetric pattern with 10-dB taper in 20 degree is achieved for the E-, H-and 45-deg planes.The phase distribution inside the mode coupler is shown for both the TE 11 and TE 21 modes in Figure 8. The coupling through the holes in the rectangular guides is evident from the figure. It is also evident that two modes generate different radiation patterns. In the TE 21 mode (the right side), the opposite phase led to the field cancellation in the boresight and hence a sharp null.The measurement results for both sum and difference patterns of the monopulse feed are shown in Figure 9. The 40-dB difference in the sum and difference channels in the boresight assures the high sensitivity of the target tracking.

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Microwave Filter Design in the Time Domain

Abstract: Commensurate transmission-

Cited by 2 publications

References 3 publications

Impact of the UWB Filter Frequency Domain Non-Idealities on the Filter Transient Response

Impact of the UWB Filter Frequency Domain Non-Idealities on the Filter Transient Response

UWB microstrip filter design using a time-domain technique

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