Ultra-Wideband Crossover Using Microstrip-to-Coplanar Waveguide Transitions

Abbosh, Amin; Ibrahim, Siti Zuraidah; Karim, M. N. A.

doi:10.1109/lmwc.2012.2218586

Cited by 61 publications

(29 citation statements)

References 15 publications

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“…Air wedge is realized using microelectromechanical systems (MEMS) processing and bond wires, increasing the cost and complexity of fabrication. The second kind adopts the multilayer configuration, where the signals are transmitted between different layers by microstrip-coplanar waveguide-microstrip transitions [11,12] and microstrip-slotline-microstrip transitions. Since double side alignment is required for these crossovers they become more complex and it is also inconvenient to integrate them with other circuits and components.…”

Section: Introductionmentioning

confidence: 99%

Microstrip Patch Antenna Assisted Compact Dual Band Planar Crossover

Menon

2017

Electronics

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Abstract:In Microwave Monolithic Integrated Circuits, crossovers maintain signal purity when transmission lines overlap with each other. A simple crossover for dual band applications, particularly suitable for the development of smart antennas, is presented in this paper. Derived from conventional patch antenna, the proposed crossovers are easy to design and fabricate, thus reducing the overall complexity. Design is verified for a dual band crossover at 2.4/5.23 GHz on FR4 (Fiberglass Reinforced) epoxy and tested using Keysight E5080 A Vector Network Analyser. The results obtained by simulation and measurement are in agreement. The proposed crossovers find application in a Butler matrix for phased array and smart antenna systems.

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Section: Introductionmentioning

confidence: 99%

Microstrip Patch Antenna Assisted Compact Dual Band Planar Crossover

Menon

2017

Electronics

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“…Many methods have been presented to design planar crossovers instead of using bond wires in the past few years [1][2][3][4][5][6][7][8][9][10][11][12][13]. In [1][2][3][4][5][6], ring and branch-line couplers were used to realise the crossover function on a planar structure.…”

Section: Introductionmentioning

confidence: 99%

“…It was demonstrated that to widen the band of the crossover, cascaded branch-lines can be used [3][4][5][6]. To avoid using cascaded structures, which increase the size of the crossover, the designs in [7][8][9][10][11][12][13] are proposed using patch resonators in different shapes, or microstrip-to-slot line/coplanar waveguide transitions in multilayer or dual-side configurations.…”

Section: Introductionmentioning

confidence: 99%

Broadband microwave crossover using parallel‐coupled microstrip lines and short‐ended stubs

Zhu¹,

Wang²,

Abbosh³

2015

IET Microwaves, Antennas & Propagation

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A broadband microwave crossover with planar structure and compact size is proposed. It is composed of four pairs of parallel-coupled microstrip lines terminated with short-ended stubs. The utilised structure is analysed using a second-order even/ odd-mode method, which shows that the centre frequency and bandwidth of the passband are defined by the length and coupling factor of the coupled lines, respectively. The proposed design is verified using both full-wave simulations as well as experiments on two prototypes. The achieved results of the two designs indicate fractional bandwidths of 12.5 and 25% with less than 0.8 dB of insertion loss, more than 17 dB of return loss, more than 18 and 12 dB of isolation and a flat group delay with less than 0.4 ns of deviation.

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“…In the literature, a few fully planar structures are proposed, such as the conventional approach of cascading hybrid and symmetric fourport junctions [2,[8][9][10][11][12]. The cascaded structures utilized in [2,8] result in a large size, whereas the use of very thin lines [9] limits the power handling capability, which is crucial factor in the beamforming networks of microwave transmitters.…”

Section: Introductionmentioning

confidence: 99%

“…The cascaded structures utilized in [2,8] result in a large size, whereas the use of very thin lines [9] limits the power handling capability, which is crucial factor in the beamforming networks of microwave transmitters. The structures presented in [10][11][12] uses slotted grounds and thus they are not perfectly compatible with uniplanar microstrip circuits.…”

Section: Introductionmentioning

confidence: 99%

Compact Planar Microstrip Crossover for Beamforming Networks

Henin

Abbosh²

2012

PIER C

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Abstract-The design of a fully planar microstrip crossover for beamforming networks is presented. The design starts by using a conventional half-wavelength square patch and two sets of orthogonal feeding lines. Rectangular and circular slots are introduced on the square patch in order to reduce the required area of the patch by 82%. The proposed crossover is fabricated and tested for performance confirmation. The measured data shows less than 1 dB insertion loss, more than 13 dB isolation, and around 0.1 ns deviation in the group delay across 12% fractional bandwidth. The proposed crossover is suitable for planar Butler matrix which is a key component in beamforming networks.

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Ultra-Wideband Crossover Using Microstrip-to-Coplanar Waveguide Transitions

Cited by 61 publications

References 15 publications

Microstrip Patch Antenna Assisted Compact Dual Band Planar Crossover

Microstrip Patch Antenna Assisted Compact Dual Band Planar Crossover

Broadband microwave crossover using parallel‐coupled microstrip lines and short‐ended stubs

Compact Planar Microstrip Crossover for Beamforming Networks

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