Feasibility of a low‐cost hybrid tunable phase shifter based on nonlinear transmission lines

Jrad, Akil; Bourtoutian, R.; Ferrari, Philippe; Helwani, Amer El

doi:10.1002/mop.20967

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2006

2022

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Cited by 2 publications

(2 citation statements)

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“…The phase shift that was measured experimentally was even greater than that predicted by the simulations, meaning potentially that a novel phase shifter with very large phase shifts could be designed [7].…”

Section: Resultsmentioning

confidence: 95%

Novel distributed planar negative refractive index material

Karmakar¹,

Balbin²

2006

Micro & Optical Tech Letters

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Section: Resultsmentioning

confidence: 95%

Novel distributed planar negative refractive index material

Karmakar¹,

Balbin²

2006

Micro & Optical Tech Letters

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“…Phase shifter is one of the key components for the Nolen matrix. Phase shifters with different functions can be realized, such as wideband, 16,17 miniaturized, 18,19 tunable, 20,21 multimode, 22 reconfigurable. 23,24 However, most of them have complex structures, adding complexity to the design of Nolen matrix.…”

Section: Introductionmentioning

confidence: 99%

Design of wideband 4 × 4 Nolen matrix using m ultistub loaded phase shifters

Liu

Chen

2022

Int J RF Mic Comp-Aid Eng

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In this article, a wideband microstrip 4 Â 4 Nolen matrix using novel phase shifters is proposed. Because of the unequal electrical paths connecting one input to every output, Nolen matrices in standard form usually introduce significant phase dispersion and amplitude instability, limiting the effective bandwidth. A novel phase shifter consisting of multiple open-and short-circuited stubs is designed, whose rate of change of phase with frequency can be conveniently adjusted. This phase shifter can be used to balance the rate of change of phase with frequency of the unequal electrical paths to reduce the phase dispersion and amplitude instability, thus realizing wide bandwidth of the output phase differences and output amplitudes. To verify the proposed concept, a wideband 4 Â 4 Nolen matrix operating at 6 GHz is designed and fabricated, showing a bandwidth up to 33% within ±15 phase imbalance and 21.5% within ±1 dB amplitude imbalance.

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Feasibility of a low‐cost hybrid tunable phase shifter based on nonlinear transmission lines

Cited by 2 publications

References 9 publications

Novel distributed planar negative refractive index material

Novel distributed planar negative refractive index material

Design of wideband 4 × 4 Nolen matrix using m ultistub loaded phase shifters

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