Compact Ultra-Wideband Phase Shifter

Naser‐Moghadasi, Mohammad; Dadashzadeh, Gholamreza; Dadgarpour, Abdolmehdi; Jolani, Farid; Virdee, and Bal Singh

doi:10.2528/pierl10032606

Cited by 10 publications

(10 citation statements)

References 10 publications

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“…Thus, the OSSB modulation can be realized by a 120°(i.e., 2π/3) hybrid coupler and a dual-drive MZM by a proper dc bias, which introduces an additional phase difference of π/3 between the two arms of the dual-drive MZM. It should be noted that a wideband 120°hybrid coupler can be achieved by coupling between the top and bottom elliptical microstrip patches via an elliptical slot located in the mid-layer [22] or the microstrip-lines connected to a low-impedance rectangular microstrip patch [23].…”

Section: Analytical Analysismentioning

confidence: 99%

Optical Single-Sideband Modulation Based on a Dual-Drive MZM and a 120° Hybrid Coupler

Xue

Pan

Zhao

2014

J. Lightwave Technol.

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A novel scheme for implementing high-performance optical single-sideband (OSSB) modulation based on a dual-drive Mach-Zehnder modulator (MZM) and a 120°hybrid coupler is proposed and demonstrated. A RF signal is divided by the 120°h ybrid coupler into two parts with equal powers and a phase difference of 120°, and then, led to the two RF ports of the dual-drive MZM. With a proper dc bias, an OSSB signal with the −1st and +2nd-order sidebands (or the +1st and −2nd-order sidebands) suppressed is generated. A numerical simulation and a proof-ofconcept experiment are carried out. As compared with the conventional OSSB modulation based on a 90°hybrid coupler, the suppression of the +2nd (or −2nd)-order sideband improves evidently the performance when the OSSB modulation is applied in a radio-over-fiber system or an optical vector network analyzer.Index Terms-Microwave photonics, optical single-sideband (OSSB) modulation, optical vector network analysis, radio-overfiber (RoF).

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Section: Analytical Analysismentioning

confidence: 99%

Optical Single-Sideband Modulation Based on a Dual-Drive MZM and a 120° Hybrid Coupler

Xue

Pan

Zhao

2014

J. Lightwave Technol.

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“…So to solve this problem, the coupled lines are used with high input impedance and are connected in parallel [4]. A number of authors have proposed the use of multi-row coupled segments that many phase shifters under schiffman phase shifters has been obtained [5][6][7][8][9][10][11][12]. In [13], a wide band fixed phase shifter, 60 and 90 degrees, is designed.…”

Section: Introductionmentioning

confidence: 99%

An Innovative Ultra Wideband Microstrip Phase Shifter Based on the LANGE Coupler

Sarkooyeh¹,

Salimi²

2015

IJSEA

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Abstract:The method presented in this paper is beased on coupled line in the standard schiffman phase shifters structure and replace it with lange coupler. To having a wider bandwidth, the stronger coupling is required. One way to achieve strong coupling is using of the parallel coupled lines that this property exist in the lange coupler. So this paper discusses the design of fixed broadband phase shifter by using the lange coupler and a novel phase shifters will be introduced according to the standard schiffman phase shifters. Finally optimal parameters to achieve the desired performance will be shown.

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“…With the described setup, the phase difference between the two output IF signals φ p (f ) = ∆φ IF, 2 −∆φ IF, 3 can be evaluated. Note that such difference is the same as φ p, 2 (f ) in (7). The optimum frequency response of the phase shift is imposed through an optimization process in which the parameters which define the multi-harmonic loadγ p are modified in order to fulfill the non perturbation condition of the two auxiliary generators while the optimum value of φ p (f ) is imposed.…”

Section: Optimization Of the Phase Shifter Frequency Responsementioning

confidence: 99%

“…The main drawbacks of these devices are the phase error due to the discrete operation and the phase shift dependent insertion losses. Other approaches for the implementation of analog phase shifters based on ferrite components [6] and passive coupled-line structures [7] have also been described. These devices are unsuitable for the design of low cost planar arrays because of their heavy weight and large size, and the difficulty to be integrated with planar structures.…”

Section: Introductionmentioning

confidence: 99%

Non Linear Optimization Technique for the Reduction of the Frequency Scanning Effect in a Phased Array Based on Broadband Injection-Locked Third Harmonic Self-Oscillating Mixers

Fernández¹,

Hoeye²,

Vázquez³

et al. 2012

PIER

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Abstract-In this work, an electronically tunable large range phase shifter based on a broadband Injection-Locked Third Harmonic SelfOscillating Mixer (IL3HSOM) is designed and analyzed. This multifunctional circuit generates a down-converted Intermediate Frequency (IF) signal and provides a theoretical 540 • continuous phase shift range. The conversion gain and the bandwidth of the circuit are optimized through bifurcation control techniques. The IL3HSOM will be used as the core of a broadband phased antenna array with electronic beam-steering capabilities. The use of a multi-harmonic load based on an arbitrarily width modulated transmission line allows the nonlinear optimization of the circuit phase shift frequency response to compensate the frequency scanning effect, which negatively influences the performance of broadband antenna arrays.

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Compact Ultra-Wideband Phase Shifter

Cited by 10 publications

References 10 publications

Optical Single-Sideband Modulation Based on a Dual-Drive MZM and a 120° Hybrid Coupler

Optical Single-Sideband Modulation Based on a Dual-Drive MZM and a 120° Hybrid Coupler

An Innovative Ultra Wideband Microstrip Phase Shifter Based on the LANGE Coupler

Non Linear Optimization Technique for the Reduction of the Frequency Scanning Effect in a Phased Array Based on Broadband Injection-Locked Third Harmonic Self-Oscillating Mixers

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