Hybrid bulk acoustic wave structure for temperature stability in LTE applications

Jea Shik Shin; Insang Song; Chul Soo Kim; Sang Uk Son; Moon Chul Lee; Duck Hwan Kim; Ho Soo Park; Jing Cui; Yujie Ai; Sungwoo Hwang; Jae Sung Rieh

doi:10.1109/LMWC.2013.2272609

Hybrid bulk acoustic wave structure for temperature stability in LTE applications

Jea Shik Shin, Insang Song, Chul Soo Kim, Sang Uk Son, Moon Chul Lee, Duck Hwan Kim, Ho Soo Park, Jing Cui, Yujie Ai, Sungwoo Hwang, Jae Sung Rieh

School of Electrical Engineering

Research output: Contribution to journal › Article › peer-review

4 Citations (Scopus)

Abstract

A novel structure of hybrid bulk acoustic wave (BAW) resonator with low temperature coefficient of frequency (TCF) is presented. Implemented with a pair of quarter-wave reflectors on air-cavity reflector, the hybrid BAW resonator exhibits a TCF of as low as -11.5\ {\rm ppm}/^{\circ}{\rm C} and an effective electro-mechanical coupling coefficient ({\rm kt}^{2}) of 5.1% at the frequency of 2.5 GHz. The hybrid BAW resonator also shows excellent Q-factors of 1627 and 1842 at resonance and anti-resonance frequency, respectively. RF duplexer configured with the hybrid BAW resonators is provided as well. The fabricated RF duplexer for long term evolution (LTE) band-7, which should be designed to prevent the co-existence problem with WiFi having extremely narrow fractional band-gap of 0.7%, achieves an attenuation of 36.8 dB and an insertion loss of 2.4 dB.

Original language	English
Article number	6568974
Pages (from-to)	453-455
Number of pages	3
Journal	IEEE Microwave and Wireless Components Letters
Volume	23
Issue number	9
DOIs	https://doi.org/10.1109/LMWC.2013.2272609
Publication status	Published - 2013

Keywords

Bulk acoustic wave (BAW) resonator
RF duplexer
RF filter
temperature coefficient of frequency (TCF)

ASJC Scopus subject areas

Condensed Matter Physics
Electrical and Electronic Engineering

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10.1109/LMWC.2013.2272609

Cite this

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title = "Hybrid bulk acoustic wave structure for temperature stability in LTE applications",

abstract = "A novel structure of hybrid bulk acoustic wave (BAW) resonator with low temperature coefficient of frequency (TCF) is presented. Implemented with a pair of quarter-wave reflectors on air-cavity reflector, the hybrid BAW resonator exhibits a TCF of as low as -11.5\ {\rm ppm}/^{\circ}{\rm C} and an effective electro-mechanical coupling coefficient ({\rm kt}^{2}) of 5.1% at the frequency of 2.5 GHz. The hybrid BAW resonator also shows excellent Q-factors of 1627 and 1842 at resonance and anti-resonance frequency, respectively. RF duplexer configured with the hybrid BAW resonators is provided as well. The fabricated RF duplexer for long term evolution (LTE) band-7, which should be designed to prevent the co-existence problem with WiFi having extremely narrow fractional band-gap of 0.7%, achieves an attenuation of 36.8 dB and an insertion loss of 2.4 dB.",

keywords = "Bulk acoustic wave (BAW) resonator, RF duplexer, RF filter, temperature coefficient of frequency (TCF)",

author = "Shin, {Jea Shik} and Insang Song and Kim, {Chul Soo} and Son, {Sang Uk} and Lee, {Moon Chul} and Kim, {Duck Hwan} and Park, {Ho Soo} and Jing Cui and Yujie Ai and Sungwoo Hwang and Rieh, {Jae Sung}",

year = "2013",

doi = "10.1109/LMWC.2013.2272609",

language = "English",

volume = "23",

pages = "453--455",

journal = "IEEE Microwave and Wireless Components Letters",

issn = "1531-1309",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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T1 - Hybrid bulk acoustic wave structure for temperature stability in LTE applications

AU - Shin, Jea Shik

AU - Song, Insang

AU - Kim, Chul Soo

AU - Son, Sang Uk

AU - Lee, Moon Chul

AU - Kim, Duck Hwan

AU - Park, Ho Soo

AU - Cui, Jing

AU - Ai, Yujie

AU - Hwang, Sungwoo

AU - Rieh, Jae Sung

PY - 2013

Y1 - 2013

N2 - A novel structure of hybrid bulk acoustic wave (BAW) resonator with low temperature coefficient of frequency (TCF) is presented. Implemented with a pair of quarter-wave reflectors on air-cavity reflector, the hybrid BAW resonator exhibits a TCF of as low as -11.5\ {\rm ppm}/^{\circ}{\rm C} and an effective electro-mechanical coupling coefficient ({\rm kt}^{2}) of 5.1% at the frequency of 2.5 GHz. The hybrid BAW resonator also shows excellent Q-factors of 1627 and 1842 at resonance and anti-resonance frequency, respectively. RF duplexer configured with the hybrid BAW resonators is provided as well. The fabricated RF duplexer for long term evolution (LTE) band-7, which should be designed to prevent the co-existence problem with WiFi having extremely narrow fractional band-gap of 0.7%, achieves an attenuation of 36.8 dB and an insertion loss of 2.4 dB.

AB - A novel structure of hybrid bulk acoustic wave (BAW) resonator with low temperature coefficient of frequency (TCF) is presented. Implemented with a pair of quarter-wave reflectors on air-cavity reflector, the hybrid BAW resonator exhibits a TCF of as low as -11.5\ {\rm ppm}/^{\circ}{\rm C} and an effective electro-mechanical coupling coefficient ({\rm kt}^{2}) of 5.1% at the frequency of 2.5 GHz. The hybrid BAW resonator also shows excellent Q-factors of 1627 and 1842 at resonance and anti-resonance frequency, respectively. RF duplexer configured with the hybrid BAW resonators is provided as well. The fabricated RF duplexer for long term evolution (LTE) band-7, which should be designed to prevent the co-existence problem with WiFi having extremely narrow fractional band-gap of 0.7%, achieves an attenuation of 36.8 dB and an insertion loss of 2.4 dB.

KW - Bulk acoustic wave (BAW) resonator

KW - RF duplexer

KW - RF filter

KW - temperature coefficient of frequency (TCF)

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U2 - 10.1109/LMWC.2013.2272609

DO - 10.1109/LMWC.2013.2272609

M3 - Article

AN - SCOPUS:84883764020

SN - 1531-1309

VL - 23

SP - 453

EP - 455

JO - IEEE Microwave and Wireless Components Letters

JF - IEEE Microwave and Wireless Components Letters

IS - 9

M1 - 6568974

ER -

Hybrid bulk acoustic wave structure for temperature stability in LTE applications

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Keywords

ASJC Scopus subject areas

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