Novel high-rejection LTCC diplexers for dual-band WLAN applications

Orlenko, D.; Markov, K.P.; Royak, S.; Gordiyenko, A.; Kerssenbrock, T. v.; Sevskiy, G.; Heide, P.

doi:10.1109/mwsym.2005.1516713

Cited by 20 publications

(14 citation statements)

References 2 publications

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“…5 (b) [2]. In this method, the matching circuits between the common port and each filter are ideally determined by the conditions of (5)- (8) as follows: …”

Section: Matching Conditions For Multiplexersmentioning

confidence: 99%

Compact multiplexer modules for multi-band wireless systems using LTCC technology

Oshima

Murata²

2012

IEICE Electron. Express

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Abstract:Recently, compact wireless modules are very significant parts for multi-band wireless systems such as mobile phones and compact personal computers. A low temperature co-fired ceramic (LTCC) substrate which has embedded passive components is effective technology for producing the compact modules, because this substrate is suitable for a multilayer structure and is also a low dielectric loss and a low conductor loss. Therefore, a lot of multi-band wireless systems use this technology. In the radio frequency circuits of the multi-band wireless systems, a multiplexer is one of the most important passive circuits, in order to achieve both a compact size and high performances. In this paper, we report the technology of the compact multiplexer modules using the LTCC substrate. This paper especially focuses on the multiplexer for ultra-wideband wireless systems. The multiplexer which is suitable for narrow band wireless systems is also described. Keywords: low temperature co-fired ceramic (LTCC) substrate, module, multiplexer, multi-band wireless system, surface acoustic wave (SAW) filter, ultra-wideband (UWB) Classification: Microwave and millimeter wave devices, circuits, and systems "A compact multilayer triplexer using an ultra-wideband diplexer and a low-pass filter for 2.4 GHz wireless systems," IEICE Electron. Express, vol. 9, no. 12, pp. 1075-1080, June 2012 H. Mandai, T. Tsuru, and N. Nakajima, "Advanced multi-layer ceramic surface-mount functional components for telecommunications equipment," Proc. 45th Electronic Components and Technology Conf., 1995, pp. 247-250, May 1995. [15] G. Wang, M. Van, F. Barlow, and A. Elshabini, "An interdigital bandpass filter embedded in LTCC for 5-GHz wireless LAN applications," IEEE Microw. Wireless Compon. Lett., vol. 15, no. 5, pp. 357-359, May 2005. [16] C. -C. Weng, C. -F. Chang, and S. -J. Chung, "Development of a compact low-temperature co-fired ceramic antenna front-end module," IEEE Trans. Microw. Theory Tech., vol. 56, no. 11, pp. 2483-2492, Nov. 2008 T. Ishizaki, M. Fujita, H. Kagata, T. Uwano, and H. Miyake, "A very small dielectric planar filter for portable telephones," IEEE Trans. Microw. Theory Tech., vol. 42, no. 11, pp. 2017-2022, Nov. 1994 References

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“…5 (b) [2]. In this method, the matching circuits between the common port and each filter are ideally determined by the conditions of (5)- (8) as follows: …”

Section: Matching Conditions For Multiplexersmentioning

confidence: 99%

Compact multiplexer modules for multi-band wireless systems using LTCC technology

Oshima

Murata²

2012

IEICE Electron. Express

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“…It is very difficult that the input admittance of one filter in the other band is designed to meet the open condition, because each band is very wide. In this study, the conjugate matching method [8] adapts to the UWB bandpass filters in order to achieve the UWB diplexer. The matching circuits for the each filter are decided by the following conditions.…”

Section: Schematic Of Diplexer With Two Wide Passbandsmentioning

confidence: 99%

A study on a multilayer diplexer using LTCC technology for ultra-wideband wireless modules

Oshima

Wada

Murata

et al. 2011

IEICE Electron. Express

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Abstract:A multilayer diplexer in a low temperature co-fired ceramic substrate for compact ultra-wideband (UWB) wireless modules is presented. This diplexer can separate the band group 1 (3.168-4.752 GHz) of multiband orthogonal frequency-division multiplexing UWB systems from the band groups 3 and 4 (6.336-9.504 GHz) of the same systems. The basic characteristics of the diplexer are simulated with a circuit simulator and an electromagnetic simulator. The fabrication and measurement of the presented diplexer are also carried out. The measured results of the fabricated diplexer agree well with the simulated results. The insertion losses are less than 2.0 dB and the isolation characteristics are higher than 30 dB. The diplexer achieves a compact size (7.2 x 3.6 x 0.384 mm 3 ). Keywords: diplexer, low temperature co-fired ceramic (LTCC) substrate, matching circuits, ultra-wideband (UWB) Classification: Microwave and millimeter wave devices, circuits, and systems References[1] Y.-S. Lin, C.-C. Liu, K.-M. Li, and C. H. Chen, "Design of an LTCC tri-band transceiver module for GPRS mobile applications," IEEE Trans.

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“…Inside the multilayer LTCC matching circuits, DC-and RF-routing as well as passive structures like filters, baluns and multiplexers are implemented [2][3][4][5][6][7]. LTCC has also been proven a viable platform for integration of power amplifiers and other active components with respect to thermal dissipation [8].…”

Section: Motivationmentioning

confidence: 99%

WiMax system-in-package solutions based on LTCC- technology

Heyen¹,

Yatsenko²,

Nalezinski³

et al. 2008

2008 IEEE International Conference on Microwaves, Communications, Antennas and Electronic Systems

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IntroductionThis paper presents a highly integrated WiMAX System-in-Package (SiP) based on LTCC technology (Low Temperature Co-fired Ceramics). It comprises the complete passive and active RF frontend plus the transceiver RFIC for up-and down-conversion to base band. The overall size of such a smart package strongly depends on the applied technology and level of integration (multiband/multimode). The benefits on size reduction coming from advanced integration and assembly technologies are discussed and a very compact LTCC SiP with less than 50 mm 2 size and SMT-compatible footprint is demonstrated. Top level measurements show full performance and thus fully validate the LTCC integration approach. Motivation

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Novel high-rejection LTCC diplexers for dual-band WLAN applications

Cited by 20 publications

References 2 publications

Compact multiplexer modules for multi-band wireless systems using LTCC technology

Compact multiplexer modules for multi-band wireless systems using LTCC technology

A study on a multilayer diplexer using LTCC technology for ultra-wideband wireless modules

WiMax system-in-package solutions based on LTCC- technology

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