150 GHz Band-Pass Filter Using LTCC Technology

Khalil, Ali; Passerieux, Damien; Baillargeat, Dominique; Verdeyme, Serge; Rigaudeau, Laëtitia; Puech, J.

doi:10.1109/lmwc.2009.2022132

Cited by 7 publications

(17 citation statements)

References 17 publications

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“…1. As mentioned before, it is an evolution version of the two-pole filter presented in [5]. Five parallelepiped resonant cavities are aligned horizontally (along -axis); they are coupled by four iris formed between two vertical vias.…”

Section: A Proposed Structurementioning

confidence: 99%

“…To the best of our knowledge, the work presented in [5] is the first attempt to construct an LTCC filter working at a frequency over 100 GHz, thus, in the submillimeter wave range. This bandpass filter was optimized to function around 150 GHz with 1.6% transmission band for radioastronomy applications.…”

Section: Introductionmentioning

confidence: 99%

“…Regarding this latter, more poles are needed to increase the selectivity of the filter [6]. Thus, more resonant cavities are needed if we suppose the topology of the filter presented in [5].…”

Section: Introductionmentioning

confidence: 99%

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Quasi-Elliptic and Chebyshev Compact LTCC Multi-Pole Filters Functioning in the Submillimetric Wave Region at 150 GHz

Khalil¹,

Passerieux²,

Baillargeat³

et al. 2010

IEEE Trans. Microwave Theory Techn.

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This paper proposes, for the first time to the best of our knowledge, two challenging LTCC multi-pole bandpass filters operating at 150 GHz for radioastronomy applications. Low-temperature co-fired ceramic (LTCC) technology is employed to realize these filters because it assures the high precision and compactness needed at this high frequency. The two filters are optimized by 3-D electromagnetic simulations and are validated by experimental results. Different positive and negative couplings, which are achieved by different coupling apertures, are studied. The five-pole Chebyshev filter has 8.4 dB of insertion loss in a 1.31% fractional bandwidth for 6.7 mm 2.45 mm lateral dimensions. The fourpole quasi-elliptic filter is conceived to decrease insertion loss by decreasing the number of resonant cavities while conserving the same selectivity by introducing two transmission zeros around the passband. Beside 5.5 dB of insertion loss, this filter occupies a more compact circuit area (3.32 mm 2.37 mm) and insures a very good spurious free region (16 GHz) around 150 GHz. Experimental results are in good agreement with the theoretical ones and validate the use of LTCC technology at such high frequencies over 100 GHz.

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Section: A Proposed Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Quasi-Elliptic and Chebyshev Compact LTCC Multi-Pole Filters Functioning in the Submillimetric Wave Region at 150 GHz

Khalil¹,

Passerieux²,

Baillargeat³

et al. 2010

IEEE Trans. Microwave Theory Techn.

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“…The feed antennas, the switches, and other needed components can be integrated in one package using low-temperature cofired ceramic (LTCC) technology, e.g., [3,[21][22][23][24][25][26][27][28].…”

Section: Introductionmentioning

confidence: 99%

“…LTCC has been used at W-band 77-110 GHz [3,[25][26][27], and up to 150 GHz [28], proving that LTCC technology offers cost-effective solutions also above 60 GHz. In this paper, an 8-element aperture coupled microstrip linefed patch antenna (ACMPA) array is designed.…”

Section: Introductionmentioning

confidence: 99%

Using Optimized Eccentricity Rexolite Lens for Electrical Beam Steering With Integrated Aperture Coupled Patch Array

Karttunen

Säily²,

Lamminen³

et al. 2012

PIER B

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Abstract-Design and measurement results of a beam-steering integrated lens antenna at 77 GHz are presented. An 8-element LTCC aperture coupled patch antenna feed array with a switching network is used to electrically steer the main beam in H-plane. A 100-mm diameter Rexolite (ε r = 2.53) lens is simulated and tested. The eccentricity of the lens is optimized in an earlier work with ray-tracing simulations for improved beam-steering properties compared to the conventional extended hemispherical and elliptical lenses. The beamsteering properties including scan loss, main-beam width and direction, side-lobe levels, directivity, and cross-polarization are analyzed in detail with both simulations and radiation pattern measurements. As expected, the results show that the side-lobe and cross-polarization levels are not predicted accurately with large feed offsets using the ray-tracing simulations. Nevertheless, it is shown that the lens shape can be successfully optimized with the simple and fast ray-tracing simulations. The measured half-power beam-width at 77 GHz is 2.5 • ± 0.2 • up to the largest tested beam-steering angle of 30 • . The optimized eccentricity low permittivity lens results in smaller scan loss than the conventional lenses.

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