An X-band Low Phase Noise Oscillator with High Harmonic Suppression Using SIW Quarter-Wavelength Resonator

Cai, Zongqi; Tang, Xiaohong; Zhang, Ting; Yang, Yang

doi:10.1109/mwsym.2018.8439633

Cited by 5 publications

(3 citation statements)

References 9 publications

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“…Therefore, the SIW technology has advantages in small size, low cost, low loss systems and reduces the total requirement for transition. After a series of improvements, the SIW can be applied to filters [3], [4], antennas [5], [6], power amplifiers [7], [8], power distributors [9], oscillators [10] and polarizers [11]. It is apparent that the SIW structure can be utilized in the RF front-end as a standard waveguide.…”

Section: Introductionmentioning

confidence: 99%

Compact Substrate Integrated Waveguide Filtering Antennas: A Review

Sun

Feng

et al. 2022

IEEE Access

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In recent years, with the rapid development of integrated circuits, the filtering antenna (FA) circuit of the substrate integrated waveguide (SIW) has attracted widespread attention in wireless communications. Numerous structures have been proposed to improve the performance of SIW FA. Hence, this paper presents the development and miniaturization trend of the SIW FA, and briefly introduces the structure and historical development of the SIW FA. In terms of the mode, multi-mode cavities and incomplete mode cavities are constructed. Multi-layer structures, special structures and the slow-wave technology are constructed in physical structure. Several methods and design examples of the SIW FA miniaturization are introduced from these two aspects. Based on the combination of the filter and antenna, the FA remains the advantages of the SIW structure, mainly including small size, low insertion loss, high quality-factors, and easy integration in planar radio frequency components. Therefore, it can further reduce the circuit, allowing SIW FAs to be applied in many aspects such as the 5G (5th generation mobile communication technology) and wireless local area network communications.INDEX TERMS Substrate integrated waveguide (SIW), filtering antenna (FA), multi-mode, incomplete mode, multi-layer, slow-wave technology.

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Section: Introductionmentioning

confidence: 99%

Compact Substrate Integrated Waveguide Filtering Antennas: A Review

Sun

Feng

et al. 2022

IEEE Access

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“…An ultra‐low phase noise oscillator based on elliptic‐response bandpass filter is proposed based on the optimized PNFOM . For the nonlinear circuit of oscillator, the phase noise performance can also be improved by suppressing the output power of harmonic frequencies . Besides, high‐quality resonator is employed to achieve negative resistance series‐configuration oscillators .…”

Section: Introductionmentioning

confidence: 99%

“…11 For the nonlinear circuit of oscillator, the phase noise performance can also be improved by suppressing the output power of harmonic frequencies. [12][13][14] Besides, highquality resonator is employed to achieve negative resistance series-configuration oscillators. 15,16 What is more, pushpush and push-pull oscillators are proposed to optimize the phase noise performance of oscillators.…”

Section: Introductionmentioning

confidence: 99%

Ultra‐low phase noise oscillator employing mixed electric and magnetic coupling resonator

Cai

Yang

Tang

et al. 2020

Micro & Optical Tech Letters

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In this article, a pair of stub‐loaded interdigital hairpin resonators‐based filter with high group delay and improved stopband suppression is used to design an S‐band ultra‐low phase noise single‐ended oscillator. A transmission zero closed to the edge of passband in the filter is generated by introducing strong electric and magnetic coupling, which can improve the phase noise performance of the proposed oscillator. A low phase noise figure‐of‐merit (FOM) that considers both insertion loss and group delay of the feedback loop is used to evaluate the overall phase noise performance of the proposed oscillator. In order to verify the concept, the proposed oscillator is designed and fabricated. The measured results show that the oscillation frequency is 2.037 GHz with the output power of 8.92 dBm while the second harmonic suppression level is about 35.66 dB. The phase noise and the FOM of the proposed oscillator at 100 kHz frequency offset are −127.95 and −199.31 dBc/Hz, respectively. According to the open literature, this is one of the best phase noise performances of the single‐ended hybrid integrated oscillators oscillating at the similar frequency range.

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