A Microstrip and Stripline Crossover Structure (Letters)

Wight, J.S.; Chudobiak, W.J.; Makios, V.

doi:10.1109/tmtt.1976.1128838

Cited by 80 publications

(38 citation statements)

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“…This design is known to provide high isolation between the two crossing transmission lines [36], and resulting relative bandwidth is equivalent to that of the elementary coupler. Starting from the 3 dB coupler described in the previous section, the cross-over design was improved to reduce the overall component's size, as illustrated in Figure 9 with the equivalent waveguide models.…”

Section: Cross-over (0 Db Coupler)mentioning

confidence: 99%

DESIGN AND IMPLEMENTATION OF A PLANAR 4x4 BUTLER MATRIX IN SIW TECHNOLOGY FOR WIDE BAND HIGH POWER APPLICATIONS

Djerafi¹,

Fonseca

Wu³

2011

PIER B

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Abstract-This paper introduces a novel design of Butler matrix in substrate integrated waveguide (SIW) technology with wide frequency band characteristics. Butler matrices are particularly useful in advanced antenna design and characteristics such as wideband operation, power handling, manufacturing, integration, cost, etc. are typical issues to be addressed in many applications. The proposed planar 4 × 4 Butler matrix provides an interesting solution to most of these issues. Wideband operation is achieved thanks to improved cross-couplers. These components are also characterized by higher power handling when compared to E-plane couplers. The use of SIW technology enables to reduce insertion losses compared to other printed technologies, while maintaining most advantages of such technologies such as high integration, manufacturing simplicity, low weight, etc. The proposed design is fully described, from the elementary building blocks to the full assembly performances. The design is optimized for operation in Ku-band with a center frequency at 12.5 GHz. A prototype of the 4 × 4 Butler matrix is manufactured, and good performances are confirmed over 24% relative frequency bandwidth. Potential use of this sub-system in multibeam antenna design is also discussed.

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Section: Cross-over (0 Db Coupler)mentioning

confidence: 99%

DESIGN AND IMPLEMENTATION OF A PLANAR 4x4 BUTLER MATRIX IN SIW TECHNOLOGY FOR WIDE BAND HIGH POWER APPLICATIONS

Djerafi¹,

Fonseca

Wu³

2011

PIER B

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“…Recently, many papers on the use or design of novel crossover circuits have been presented [1][2][3][4][5][6][7][8][9][10][11]. In a fully planar circuit, when two signal traces cross over each other, the most intuitive way to have good isolation is to use three-dimensional structure such as via, wire-bond and air-bridge [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

“…To reduce the design complexity, a series of multi-port planar couplers with crossover applications have been presented in [4][5][6][7][8][9][10]. An ideal four-port crossover can provide 0-dB insertion loss to diagonal ports and perfect isolation to adjacent ports.…”

Section: Introductionmentioning

confidence: 99%

“…An ideal four-port crossover can provide 0-dB insertion loss to diagonal ports and perfect isolation to adjacent ports. In [4], microstrip and stripline crossovers are contrived on the basis of two cascaded branch-line hybrids. In [5], octave-wide matched symmetrical and reciprocal fourand five-port networks are investigated.…”

Section: Introductionmentioning

confidence: 99%

“…Note that in [4]- [11] the four ports have identical termination impedances. In many applications, however, there is a need for two transmission lines crossover each other having different characteristic impedances.…”

Section: Introductionmentioning

confidence: 99%

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