2.4-GHz-Band High-Power and High-Efficiency Solid-State Injection-Locked Oscillator

Ikeda, Hikaru; Itoh, Yasushi

doi:10.1109/tmtt.2018.2836393

Cited by 12 publications

(11 citation statements)

References 9 publications

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“…The spectra of the oscillator are shown in Fig. 12 [13]. It can be seen that the oscillation frequency is stabilized by inserting the injection signal, and the phase noise is improved by increasing the injection power.…”

Section: (D) Injection-locked Oscillatormentioning

confidence: 97%

“…We focus on the coupling capacitors of the resonator in the feedback circuit [13], [14]. There are a coupling capacitor (C1a) that picks up a part of the output signal of the amplifier, the filter that composed of coupling capacitors (C1b) and (C2) at both ends of the resonator that passes only the oscillation frequency, and the transmission line that adjust the feedback phase in the feedback circuit.…”

Section: (B) Feedback Circuit Of High Power Vcomentioning

confidence: 99%

“…The power amplifier circuit employed a two-stage amplifier in consideration of the loss of the feedback circuit. The circulator was attached to the output end of the VCO to reduce the load dependence on the oscillation frequency and output power [13]. The results of the prototype resonator-less VCO using the MAGE-102425-300S GaN-HFET (made by MACOM) as the final device is shown in Fig.…”

Section: Study On Broadband Vcosmentioning

confidence: 99%

“…The configuration of an injectionlocked oscillator is shown in Fig. 11 [12], [13]. The injection locking circuit in Fig.…”

Section: (D) Injection-locked Oscillatormentioning

confidence: 99%

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Design of ISM-Band High Power and High Efficiency Solid-State VCOs for Use in Next Generation Microwave Oven

Ikeda

Itoh

2020

IEICE Trans. Electron.

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Recently, intelligent heating, next generation microwave ovens that achieve uniform heating and spot heating using solid-state devices, has been actively studied. There are two types of microwave generators using solid-state devices. Since compactness is indispensable to accommodate in a limited space, the miniaturized oscillator type was selected. The authors proposed an imbalanced coupling resonator, a resonator-less feedback circuit, a high power frequency variable resonator, and injection-locked phase control in order to achieve high performance of the oscillator type microwave generator. In addition, we confirmed that the oscillator type can be used as the microwave generator for intelligent heating using a Wilkinson combiner. As a result, it was demonstrated that the oscillator type microwave generator, realized the same high efficiency (67%) as the amplifier type, and found the possibility of variable frequency (2.4 to 2.5GHz) and variable phase, and can be used as the microwave generator for intelligent heating. key words: high power, high efficiency, feedback oscillator, VCO, intelligent heating

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Section: (D) Injection-locked Oscillatormentioning

confidence: 97%

Section: (B) Feedback Circuit Of High Power Vcomentioning

confidence: 99%

Section: Study On Broadband Vcosmentioning

confidence: 99%

“…The configuration of an injectionlocked oscillator is shown in Fig. 11 [12], [13]. The injection locking circuit in Fig.…”

Section: (D) Injection-locked Oscillatormentioning

confidence: 99%

See 2 more Smart Citations

Design of ISM-Band High Power and High Efficiency Solid-State VCOs for Use in Next Generation Microwave Oven

Ikeda

Itoh

2020

IEICE Trans. Electron.

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“…The feedback-type, however, provides a low efficiency as well as poor frequency and phase controllability. To improve efficiency, the authors have presented a novel imbalanced coupling resonator for use in the feedback circuit of the feedback-type high power oscillator [8,9]. With the use of this technique, comparable efficiency has been successfully obtained.…”

Section: Introductionmentioning

confidence: 99%

A 2.4 GHz-Band 250 W, 60% Feedback-Type GaN-HFET Oscillator Using Imbalanced Coupling Resonator for Use in the Microwave Oven

Ikeda

Itoh

2019

Applied Sciences

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Circuit design techniques for enhancing an efficiency of the high power feedback-type GaN-HFET (Gallium Nitride Heterojunction Field Effect Transistor) oscillator for use in the microwave oven are shown in this paper, focusing primarily on the harmonic terminations for high efficiency of power amplifiers, the coupling factor to feedback circuits and the insertion phase adjustment of feedback loops. With the use of these circuit design techniques, an output power of 263 W and an efficiency of 61.3% have been successfully achieved at 2.44 GHz.

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Potential for Acceleration of Simulation of Dynamic Processes in Oversized Gyrotrons by Means of Using 2.5D Particle-in-Cell Method

Rozental

Тараканов

2022

J Infrared Milli Terahz Waves

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2.4-GHz-Band High-Power and High-Efficiency Solid-State Injection-Locked Oscillator

Cited by 12 publications

References 9 publications

Design of ISM-Band High Power and High Efficiency Solid-State VCOs for Use in Next Generation Microwave Oven

Design of ISM-Band High Power and High Efficiency Solid-State VCOs for Use in Next Generation Microwave Oven

A 2.4 GHz-Band 250 W, 60% Feedback-Type GaN-HFET Oscillator Using Imbalanced Coupling Resonator for Use in the Microwave Oven

Potential for Acceleration of Simulation of Dynamic Processes in Oversized Gyrotrons by Means of Using 2.5D Particle-in-Cell Method

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