Design of an X-band Oscillator Using Novel Miniaturized Microstrip Hairpin Resonator

Seo, Sung Won; Jung, Ha Yong; Jeong, Jinho; Park, Chan Hyeong

doi:10.1109/apmc.2007.4554736

Cited by 14 publications

(7 citation statements)

References 11 publications

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“…The calculated FOM is approximately of À180 dBc/ Hz with dissipated power of 147 mW. The phase noise and the output power of the microwave oscillator using different microstrip resonators like spurline resonator, spiral resonator, planar helical resonator are compared and tabulated as in Table 1 [9][10][11][12]. Among those recently published articles, the microwave oscillator using the new proposed planar resonator exhibited better phase noise characteristics with output power at the similar frequency regime.…”

Section: Experimental Results Of Microwave Oscillatormentioning

confidence: 99%

Low phase noise oscillator using a new planar hairpin resonator for X‐band applications

Shrestha

Yoon

Lee

2013

Micro & Optical Tech Letters

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This article proposed a new high loaded quality factor (QL) hairpin resonator with a combination of a stepped impedance resonator and single split ring resonator and its application to low phase noise oscillator for X‐band applications.A new resonator has a good characteristic of S‐parameter responses. The microwave oscillator is designed at 10 GHz that exhibited a low phase noise characteristic due to the high loaded QL of the new resonator. A series feedback network is used to generate the negative resistance to make oscillation. Experimental results of the microwave oscillator show the phase noise characteristic of −103.69 dBc/Hz at 100 kHz offset with output power of 15.56 dBm. The second harmonic suppression is −32.25 dBc, which is very important in wireless communication system. The figure of merit of the fabricated oscillator is −180 dBc/Hz. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1508–1511, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27608

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Section: Experimental Results Of Microwave Oscillatormentioning

confidence: 99%

Low phase noise oscillator using a new planar hairpin resonator for X‐band applications

Shrestha

Yoon

Lee

2013

Micro & Optical Tech Letters

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“…The results of FoM found to be better due to it possessing greater capacitive and inductive coupling effects; these coupling effects also lead to its higher Q value. The main parameters of the microwave oscillators are its phase noise and output power at the given frequency, therefore, these parameters are compared to other recently published literatures [8–13], which are tabulated in Table 1. This work showed better performance among those studies.…”

Section: Resultsmentioning

confidence: 99%

Microwave oscillator design using folded T‐type slot resonator for X‐band applications

Shrestha

Maharjan

Kim

2012

Micro & Optical Tech Letters

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In this article, Microwave oscillator was designed, fabricated, and characterized using the folded T‐type slot resonator for X‐band applications. The miniaturized resonator was designed by terminating the slot lines at both ends of the T‐structure. The simulation and experimental results were compared and found a closed agreement between them. The oscillator using the folded T‐type slot resonator showed phase noise performances of −105.54 dBc/Hz at a 100 kHz offset from the carrier frequency of 8.5 GHz with an output power of 14.06 dBm. The oscillator exhibited better phase noise characteristic due to the high unloaded Q value of the folded T‐type slot resonator, which is considerably higher than that of miniaturized spurline resonators. The figure of merit of the oscillator achieved a −183.34 dBc/Hz. The feasibility of integrating that slot resonator in various monolithic microwave integrated circuit technologies can also be expected. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:2817–2821, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27215

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“…또한, 유전체 공진기는 발진기에 적용 시 마이 크로스트립 라인(microstrip line)에 커플링하고 이를 능동 회로와 결합시키게 되는데, 이때 평판형 회로 가 구현된 기판에 유전체 공진기를 정확한 위치에 고정하기 힘들고, 추가적인 조립 공정을 요구하기 때문에 회로 집적에 불리한 점이 있다. 마이크로스 트립 공진기나 SIW(Substrate Integrated Waveguide) 구조를 갖는 공진기를 이용한 발진기의 경우 [4], [5] , 집 적 면에서 유리한 점이 있으나 여전히 위상 잡음 특 성은 탁월하지 않으며, 크기 면에서도 상당 부분 개 선된 바 없다.…”

Section: ⅰ 서 론unclassified

Design of a Ultra Miniaturized Voltage Tuned Oscillator Using LTCC Artificial Dielectric Reson

Heo¹,

Oh²,

Jeong³

et al. 2012

The Journal of Korean Institute of Electromagnetic Engineering

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In this paper, we present an ultra miniaturized voltage tuned oscillator, with HMIC-type amplifier and phase shifter, using LTCC artificial dielectric resonator. ADR which consists of periodic conductor patterns and stacked layers has a smaller size than a dielectric resonator. The design specification of ADR is obtained from the design goal of oscillator. The structure of the ADR with a stacked circular disk type is chosen. The resonance characteristic, physical dimension and stack number are analyzed. For miniaturization of ADRO, the ADR is internally implemented at the upper part of the LTCC substrate and the other circuits, which are amplifier and phase shifter are integrated at the bottom side respectively. The fabricated ADRO has ultra small size of 13×13×3 mm 3 and is a SMT type. The designedADRO satisfies the open-loop oscillation condition at the design frequency. As a results, the oscillation frequency range is 2.025～2.108 GHz at a tuning voltage of 0～5 V. The phase noise is -109±4 dBc/Hz at 100 kHz offset frequency and the power is 6.8±0.2 dBm. The power frequency tuning normalized figure of merit is -30.88 dB.

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Design of an X-band Oscillator Using Novel Miniaturized Microstrip Hairpin Resonator

Cited by 14 publications

References 11 publications

Low phase noise oscillator using a new planar hairpin resonator for X‐band applications

Low phase noise oscillator using a new planar hairpin resonator for X‐band applications

Microwave oscillator design using folded T‐type slot resonator for X‐band applications

Design of a Ultra Miniaturized Voltage Tuned Oscillator Using LTCC Artificial Dielectric Reson

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