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- 摘要
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- 实验方案
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Tunable phase shifter in substrate integrated waveguide
摘要： In this paper, A variable substrate integrated waveguide (SIW) phase shifter is presented. The phase shifter is formed by capacitively coupling varactors to a longitudinal slot on a SIW. Compared to other SIW phase shifters, our design is tunable, and only occupies 7.5 mm longitudinal length. Experiment results indicate the device is shown to have up to 60 degrees phase shift in the 5.3–6 GHz range with insertion loss better than 3 dB and return loss generally better than 20 dB.
关键词： substrate integrated waveguide (SIW),varactor,phase shifter
更新于2025-09-19 17:13:59
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Reconfigurable H‐plane waveguide phase shifters prototyping with additive manufacturing at K‐band
摘要： This work presents the design and manufacturing of a K-band reconfigurable phase shifter completely implemented in waveguide technology for reduced insertion loss, good matching, and large phase shifting range. The device is based on the combination of a short slot coupler and two tunable reactive loads implemented as a section of short-circuited waveguide where an adjustable metallic post is inserted. Three prototypes of this design have been manufactured using different techniques (conventional computer numerical control machining, a low-cost fused filament fabrication technique and direct metal laser sintering) in order to assess its performance for different applications. The prototypes have been characterized experimentally and the achieved results are evaluated and compared. The proposed phase shifter, since it is fully developed in waveguide technology, eliminates the need of adding transitions to planar structures in order to integrate lumped components like pin diodes or varactors. Therefore, this device has a great potential in high-power beam steering phased arrays.
关键词： reconfigurable,selective laser sintering,additive manufacturing,waveguide,fused filament fabrication,phase shifter
更新于2025-09-19 17:13:59
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Compact Equal-Width Equal-Length Phase Shifter With Slow-Wave Half-Mode Substrate Integrated Waveguide for 5G Applications
摘要： The emerging fifth-generation (5G) wireless and mobile communications demand high-performance phase shifters to enable the multi-channel transmit/receive systems with phase control ability. In this work, a size-miniaturized wideband phase shifter based on slow-wave half-mode substrate integrated waveguide (SW-HMSIW) is presented. The proposed SW-HMSIW is consisting of conventional HMSIW section and periodically-patterned non-uniform microtrip polyline unit cells. Patterning polyline unit cells in HMSIW can effectively enhance the product of the equivalent permittivity and permeability of SW-HMSIW, so that the slow-wave effect can be exhibited and its associated size reduction will be further achieved. Moreover, lengths and widths of segments of the proposed polyline unit cell can influence the equivalent permittivity and permeability of the SW-HMSIW, and consequently change its phase constant and cutoff frequency. Hence, for a SW-HMSIW with a fixed physical length, an electrical length variation, i.e, phase shift, can be achieved as segments of the polyline employ various lengths or widths. Based on this principle, a wideband equal-width equal-length SW-HMSIW phase shifter is implemented. Measured results are in good agreement with simulated ones, with a phase shift of 90.5 ± 3 degree and a fractional bandwidth of 43.0% achieved. Compared with some similar reported works, the proposed one shows a size reduction more than 80% as well as good magnitude and phase deviations performance. Moreover, its miniaturized size and equal-width equal-length structure make it suitable for the complex multi-channel modules and networks of the 5G applications.
关键词： slow-wave structure,phase shifter,Effective medium approximation,size miniaturization,half-mode substrate integrated waveguide (HMSIW)
更新于2025-09-16 10:30:52
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3-D empty substrate integrated waveguide phase shifter with equal length
摘要： In this letter, a novel 3-D empty substrate integrated waveguide (ESIW) phase shifter with equal length has been proposed. The vertical transitions have been introduced into 3-D ESIW phase shifter in the propagation path. Based on it, the di?erent total lengths of phase shifters in the propagation path and the equal total lengths of phase shifters in the external structure are compatible. The phase shifter consists of multi-layer PCB: top layer, interlayer, middle layer, ESIW PCB, and bottom layer. The theory and design process of ESIW phase shifter have been explained and discussed in detail. To demonstrate its feasibility, the 3-D ESIW phase shifters with equal external length are designed, manufactured and measured. Final results show that the phase shifts of 45.2° 2 3.7° and 89.7° 2 4.7° can be achieved over the entire Ka-band. Besides, the return losses and the insertion losses are better than 12.5 dB, and 1.9 dB, respectively.
关键词： phase shifter,3-D empty substrate integrated waveguide (ESIW),vertical transition
更新于2025-09-16 10:30:52
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[IEEE 2018 International Applied Computational Electromagnetics Society Symposium - China (ACES) - Beijing, China (2018.7.29-2018.8.1)] 2018 International Applied Computational Electromagnetics Society Symposium - China (ACES) - A new design of MEMS coplanar waveguide phase shifter
摘要： This paper presents a new design of MEMS coplanar waveguide (CPW) bridge membrane to realize a small, low-loss and fewer-cell phase shifter. In the proposed structure, a symmetrical bridge membrane to a universal distributed MEMS phase shifter. These additional bridge membranes are placed under the CPW. By using these structure, it is possible to increase the phase shift of a unit. Furthermore, the phase shift could be increased by employing a discrete capacitance on both ends of the bridge. The structure is simulated at 10 GHz using CST software. According to simulation results for all phase states the insertion loss is 0.5 dB. The employment of the proposed structure can considerably decrease the number of cells. As a result, the size and loss can be reduced.
关键词： phase shifter,MEMS,coplanar waveguide
更新于2025-09-16 10:30:52
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[IEEE 2018 48th European Microwave Conference (EuMC) - Madrid (2018.9.23-2018.9.27)] 2018 48th European Microwave Conference (EuMC) - Carbon Nanotube Layer Modeling for Computer Simulation of Optically Controlled Phase Shifters
摘要： We propose an approach for efficient modeling of thin carbon nanotube layers for full-wave device simulations without increasing the number of simulation mesh cells. A surface impedance, used in computer simulations, is calculated from the dielectric constant of the material. The dielectric constant is modeled by a Drude–Lorentz resonance, fitted to experimental results. The approach allowed to study the nanotube-induced losses and finite-size resonance effects in optically-controlled, dielectric rod waveguide-based phase shifters. The correctness of the model was verified both by the simulated and the measured S-parameters in the W-band.
关键词： numerical simulation,optically controlled phase shifter,surface impedance,millimeter waves,carbon nanotubes
更新于2025-09-16 10:30:52
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[IEEE 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) - Boston, MA, USA (2019.6.2-2019.6.4)] 2019 IEEE Radio Frequency Integrated Circuits Symposium (RFIC) - A 21 to 30-GHz Merged Digital-Controlled High Resolution Phase Shifter-Programmable Gain Amplifier with Orthogonal Phase and Gain Control for 5-G Phase Array Application
摘要： This paper presents a 21 to 30-GHz merged passive vector sum phase shifter (PS) and programmable gain amplifier (PGA) with sub-degree phase resolution for 5-G phased array application. In PS, a transformer-based full-differential high-order resonant coupler functions as a quadrature generator (QG) with a novel layout strategy to achieve broad bandwidth, low loss, and accurate quadrature phase within only one inductor-footprint. Compared to the conventional transformer-based fourth order resonant coupler, the proposed resonant coupler with higher order features much wider quadrature bandwidth. Two phase invariant 6-bit binary-weighted arrays of vector modulators scale the quadrature signals to achieve the desired high resolution vector phase interpolation. In PGA, a phase invariant and dB-linear gain is achieved by adopting a “fractional-bit-based” PGA design. The chip prototype is fabricated in a 65-nm CMOS process, this implementation achieves 43% fractional BW-3dB (20 to 31-GHz). The phase control operates with 0.8° steps while maintaining a minimum RMS phase error of 0.42°, demonstrating the best phase accuracy when compared to state-of-the-art mm-wave PSs.
关键词： high-order,phased array,quadrature generator,ultra-compact,programmable gain amplifier,Phase shifter
更新于2025-09-16 10:30:52
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Silicon-Based Optical Phased Array Using Electro-Optic p-i-n Phase Shifters
摘要： We present a 1×16 silicon optical phased array using electro-optic phase shifters to attain high-speed operation with low power consumption. The phase shifters are constructed using a p-i-n junction structure with the p- and n-doped regions formed on both sides of the i-region. The i-region width of the phase shifter is optimized considering the power consumption for phase-tuning and the propagation loss in the phase shifter. The fabricated p-i-n phase shifter exhibits a fast operating speed of 20 MHz and a low phase-tuning power of 1.7 mW/π. From a 1-D optical phased array integrated with 2-μm-pitch grating radiators, a wide beam-steering range of 45° is attained along the transversal direction at a 1.55 μm wavelength. Average power consumption for the beam-forming operation of the 1×16 OPA is measured to be 39.6 mW and the average transition time to steer the beam is 24 ns.
关键词： p-i-n phase shifter,Optical phased array,Electro-optic,Silicon photonics
更新于2025-09-12 10:27:22
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[IEEE 2019 IEEE/MTT-S International Microwave Symposium - IMS 2019 - Boston, MA, USA (2019.6.2-2019.6.7)] 2019 IEEE MTT-S International Microwave Symposium (IMS) - Liquid Crystal Phase Shifter Based on Nonradiative Dielectric Waveguide Topology at W-Band
摘要： This paper presents a continuously tunable nonradiative dielectric waveguide (NRD) phase shifter based on liquid crystal (LC) technology at W-band. LC is inserted in the NRD’s dielectric core to obtain tunability. Compared to other dielectric waveguides, which are prone to radiation losses, the NRD is radiation free even at bends and discontinuities. A maximum differential phase shift of 280? was achieved with an electric biasing voltage of ±150 V, accompanied with insertion losses between 2.9 dB to 4.9 dB, resulting in a maximum Figure-of-Merit of 85 ?/dB.
关键词： millimeter wave devices,tunable circuits and devices,phase shifter,Liquid crystal,nonradiative dielectric waveguide
更新于2025-09-12 10:27:22
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[IEEE 2019 IEEE/MTT-S International Microwave Symposium - IMS 2019 - Boston, MA, USA (2019.6.2-2019.6.7)] 2019 IEEE MTT-S International Microwave Symposium (IMS) - A 90° Self-Compensating Slab Air-Filled Substrate Integrated Waveguide Phase Shifter
摘要： This paper presents a 90° self-compensating phase shifter based on a slab air-filled substrate integrated waveguide platform in Ka-band. A shorter phase shifter is obtained due to its operation mechanism. The measurement shows a relative phase shift of ???? ± ??. ??°, or around 8.9% for phase error, and an amplitude imbalance of 0.06 ± 0.14 dB over Ka-band. A theoretical study is presented together with simulation to understand the operation principle of this phase shifter. Simulation and measurement results are compared and discussed.
关键词： slab AFSIW (SAFSIW),phase shifter,compensating,Air-filled substrate integrated waveguide (AFSIW)
更新于2025-09-12 10:27:22