Analysis and design of slot-coupled directional couplers between double-sided substrate microstrip lines

Wong, M.F.; Hanna, Victor Fouad; Picon, Odile; Baudrand, H.

doi:10.1109/22.106554

Cited by 86 publications

(34 citation statements)

References 4 publications

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“…This is a theory that describes the diffracted fields in term of the geodesic coordinate system defined on any smooth convex body. The basic physical concept of the diffracted fields, the so-called creeping waves, is the same as that of the geometrical theory of diffraction [2]. However, the asymptotic theory of diffraction [5] provides more accurate estimations of the creeping waves.…”

Section: Discussionmentioning

confidence: 98%

Characteristics of slot-coupled double-sided microstrip lines with various coupling slots

1996

Microw. Opt. Technol. Lett.

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Section: Discussionmentioning

confidence: 98%

Characteristics of slot-coupled double-sided microstrip lines with various coupling slots

1996

Microw. Opt. Technol. Lett.

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“…Both of this top and bottom layers are coupled through the slot in the duplicated common ground plane. The widths of microstrip w p and slot w s of the coupler can be calculated using the even-and odd-mode analysis approach presented in [3] to have a 3 dB coupling coupler.…”

Section: Broadside Coupler Designmentioning

confidence: 99%

2 to 4 GHZ Frequency Discriminator for Rf Front-End Instantaneous Frequency Measurement Receivers

Deeb¹,

Yazbek²,

Malki³

2017

PIER C

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Abstract-The instantaneous measurement of RF & microwave frequencies is widely used in electronic warfare (EW) for the determination of unknown signals over a broad frequency band. This paper presents an enhanced frequency measurement accuracy using three stages of novel RF frequency discriminator (FD) for RF front-end IFM Receivers. The appropriate structure of the designed frequency discriminator is implemented using a conventional PCB fabrication process. The frequency discriminator consists of two different hybrid layouts and one Wilkinson power divider, and all these components are implemented in microstrip technology, which is particularly important due to lower cost and easy integration into the PCB. To demonstrate the feasibility of the proposed structure, an RF-FE instantaneous frequency measurement (IFM) receiver has been realized based on 3-stage RF frequency discriminator. Simulation and measurement results have shown a frequency measurement accuracy less than 1 MHz (RMS) over the entire S-band.

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“…Propagation characteristics such as characteristic impedance and effective dielectric constant depend on physical parameters. Microstripline with defected ground is found to be very useful in the design of broadband filters, tight couplers, transformers, impedance matching circuits, high impedance line, and RF interconnections [2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Approximate synthesis formulas for microstrip line with aperture in ground plane

Packiaraj

Vinoy

Kalghatgi

2011

Int J RF and Microwave Comp Aid Eng

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Approximate closed-form expressions for the propagation characteristics of a microstrip line with a symmetrical aperture in its ground plane are reported in this article. Well-known expressions for the characteristic impedance of a regular microstrip line have been modified to incorporate the effect of this aperture. The accuracy of these expressions for various values of substrate thickness, permittivity and line width has been studied in detail by fullwave simulations. This has been further verified by measurements. These expressions are easier to compute and find immense use in the design of broadband filters, tight couplers, power dividers, transformers, delay lines, and matching circuits. A broadband filter with aperture in ground plane is demonstrated in this article.

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Analysis and design of slot-coupled directional couplers between double-sided substrate microstrip lines

Cited by 86 publications

References 4 publications

Characteristics of slot-coupled double-sided microstrip lines with various coupling slots

Characteristics of slot-coupled double-sided microstrip lines with various coupling slots

2 to 4 GHZ Frequency Discriminator for Rf Front-End Instantaneous Frequency Measurement Receivers

Approximate synthesis formulas for microstrip line with aperture in ground plane

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