Design and testing of SMA temperature-compensated cavity resonators

Keats, Brian; Gorbet, Rob; Mansour, Raafat R.

doi:10.1109/tmtt.2003.820166

Cited by 15 publications

(9 citation statements)

References 7 publications

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“…The designed highdual mode resonator shows the absence of first-order variation to temperature fluctuation. To compensate for the high-order drift caused by the volumetric expansion of the cavity, a shape memory alloy actuator is used to provide a temperature dependent field perturbation [8]. All these solutions are difficult to apply in the case of SIWs.…”

Section: Introductionmentioning

confidence: 99%

Temperature Drift Compensation Technique for Substrate Integrated Waveguide Oscillator

Djerafi

Deslandes

2012

IEEE Microw. Wireless Compon. Lett.

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In this letter, a temperature drift compensation technique for Substrate Integrated Waveguide (SIW) oscillator is proposed. The drift compensation is achieved with the use of an appropriate ratio between the coefficient of thermal expansion and the thermal coefficient of the permittivity. A cavity is first designed and measured to demonstrate the potential of the proposed technique. Measured performances are compared to those for other cavities of different substrates. An oscillator, based on an SIW cavity, is designed and fabricated at 10 GHz to validate the application of the proposed technique. Measured results show a stability of 2 in the temperature operating range of 40 to 80 . Index Terms-Cavity, coefficient of thermal expansion (CTE), equivalent linear frequency drift, oscillator, substrate integrated waveguide (SIW), temperature compensation.

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Section: Introductionmentioning

confidence: 99%

Temperature Drift Compensation Technique for Substrate Integrated Waveguide Oscillator

Djerafi

Deslandes

2012

IEEE Microw. Wireless Compon. Lett.

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“…Another approach for temperature compensation in cavities is to insert a thermally actuated structure into the cavity, providing temperature dependent field perturbation at the side wall, or varying the electric length at the end wall [5]- [7].…”

Section: Introductionmentioning

confidence: 99%

“…This approach is simpler than the approach in [6], and avoids potential intermodulation issues from [5] and [7].…”

Section: Introductionmentioning

confidence: 99%

Design and Testing of a Thermally Stable Filter Using Bimetal Compensation

Keats

Mansour

Gorbet

2007

2007 IEEE/MTT-S International Microwave Symposium

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In this paper, it is proposed that a variable length bimetal tuning screw can be used to compensate for temperature drift in waveguide resonators and filters constructed from high CTE materials such as aluminum. A method is proposed for designing and tuning a bimetal tuning screw. A method is also proposed for applying this approach to filter compensation. Experimental results are provided for a compensated aluminum cavity, and filter. Temperature drift in the resonator is reduced to -0.382 ppm/°C from -23 ppm/°C. Experimental results are provided for a narrow-band inductive-iris Chebyshev band-pass filter demonstrating a reduction in temperature drift from -23 ppm/°C to 2.35 ppm/°C.

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“…Alternatively, it was shown that for a combline resonator with given dimensions of housing and resonator rod, perfect temperature compensation can be achieved at two resonant frequencies via appropriate selection of materials for the housing and the rod [1][2][3][4]. Another recent temperature compensation method [5] advocated use of a shape memory alloy (SMA) actuator.…”

Section: Introductionmentioning

confidence: 99%

“…In order to integrate temperature compensation solutions such as the above into RF/microwave filter design, an accurate and fast temperature drift model of a combline resonator is essential. A simple relationship between the resonant frequency of a combline resonator and the temperature exists [5]. However, this traditional model is not accurate enough and fails to cover different rod structures (see Fig.…”

Section: Introductionmentioning

confidence: 99%

A Space-Mapping Based CAD Methodology for Modeling Temperature Characteristics of Combline Resonators

Kashi¹,

Kumar²,

Caron³

et al. 2007

PIERS Online

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In this paper, we propose a new space-mapping based CAD modeling methodology for modeling temperature characteristics of combline resonators. With the aid of two commercial simulation tools, namely Ansoft HFSS and Agilent ADS, this methodology generates accurate temperature models of combline resonators. The method is generic i. e., it is capable of generating corresponding models for a variety of resonator structures including the mushroom and straight, using only one frequency sweep in HFSS. Fine EM simulations from HFSS are used to create an ultra-fast model in ADS, which is extremely useful to RF/microwave designers.

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Design and testing of SMA temperature-compensated cavity resonators

Cited by 15 publications

References 7 publications

Temperature Drift Compensation Technique for Substrate Integrated Waveguide Oscillator

Temperature Drift Compensation Technique for Substrate Integrated Waveguide Oscillator

Design and Testing of a Thermally Stable Filter Using Bimetal Compensation

A Space-Mapping Based CAD Methodology for Modeling Temperature Characteristics of Combline Resonators

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