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Compact Low-Loss 2.4GHz ISM-Band SAW Bandpass Filter on the LTCC Substrate

Novgorodov V, Freisleben S, Hornsteiner J, Schmachtl M, Vorotnikov B, Heide P, Vossiek M (2009)

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Publication Language: English

Publication Type: Conference contribution

Publication year: 2009

Edited Volumes: APMC 2009 - Asia Pacific Microwave Conference 2009

Pages Range: 2072-2075

Conference Proceedings Title: Asia Pacific Microwave Conference 2009

Event location: Singapore

DOI: 10.1109/APMC.2009.5385302

Abstract

This paper describes a design of a surface acoustic wave (SAW) ladder-type bandpass filter (BPF) for 2.4-2.5GHz ISM-band, based on the low temperature co-fired ceramic (LTCC) substrate, which can be used in 802.11b/g wireless LAN and Bluetooth applications. It obtains an excellent state-of-the-art performance in the ultra small package. The proposed architecture is based on a combination of SAW and low temperature co-fired ceramic (LTCC) technologies, where the multilayer LTCC substrate is used for integration of matching and passband-driving elements and for obtaining additional transmission zeros. It is comprised of three series and two parallel SAW resonators, realized on the LiTaO3 piezoelectric substrate and connected accordingly to a ladder-type T-topology circuit design, and an additional resonator to obtain an attenuation at 2.57-2.62 GHz IMT-E (TDD) band. Two input/output matching inductors and three additional inductors, permitting to obtain a sufficient suppression level at 2.11-2.17 GHz UMTS (DL) band and harmonics, are completely integrated within ceramic. The described bandpass filter has ultra small dimensions of 1.1 x 1.4 x 0.9 mm, very low insertion losses of -1.5 dB max in the passband. This fully matched SAW bandpass filter has achieved excellent selectivity performance with the up-to-date smallest package size. ©2009 IEEE.

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How to cite

APA:

Novgorodov, V., Freisleben, S., Hornsteiner, J., Schmachtl, M., Vorotnikov, B., Heide, P., & Vossiek, M. (2009). Compact Low-Loss 2.4GHz ISM-Band SAW Bandpass Filter on the LTCC Substrate. In Asia Pacific Microwave Conference 2009 (pp. 2072-2075). Singapore.

MLA:

Novgorodov, V., et al. "Compact Low-Loss 2.4GHz ISM-Band SAW Bandpass Filter on the LTCC Substrate." Proceedings of the Asia Pacific Microwave Conference 2009, APMC 2009, Singapore 2009. 2072-2075.

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