Surface acoustic wave impedance element ISM duplexer: modeling and optical analysis

Makkonen, T.; Kondratiev, S.N.; Plessky, V.P.; Thorvaldsson, T.; Koskela, J.; Knuuttila, J.V.; Salomaa, M.M.

doi:10.1109/58.920688

Cited by 9 publications

(5 citation statements)

References 37 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several papers [3], [7]- [9] describe the equivalent circuit with parasitics. The finite difference and current simulation methods are used for calculating electrical parasitic parameters of SAW packages in [10].…”

Section: Full-wave Analysis Of Duplexer Packagementioning

confidence: 99%

See 1 more Smart Citation

Design of miniaturized RF SAW duplexer package

Dong

Cheema³

et al. 2004

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

This paper provides a comprehensive methodology for accurate analysis and design of miniaturized radio frequency (RF) surface acoustic wave (SAW) duplexer package. Full-wave analysis based on the three dimensional (3-D) finite element method (FEM) is applied to get the package model. The die model is obtained by combining the parasitics and acoustics models. The modeling of bonding wire is also discussed. The models of package, die, and bonding wires are assembled together to get the total response. Based on this methodology, several novel ideas are proposed to significantly improve the isolation. Simulation and measurement results are compared, and excellent agreement is found. The technique developed in this paper reduces the design cycle time greatly and can be applied to various RF SAW device packages.

show abstract

Section: Full-wave Analysis Of Duplexer Packagementioning

confidence: 99%

“…A full duplex radio system such as code division multiple access (CDMA) IS95 or IS98 requires a device that separates the transmitting signals from the receiving signals and permits transmission and reception simultaneously. The enabling device is known as a duplexer [1]- [3].…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturized RF SAW duplexer package

Dong

Cheema³

et al. 2004

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

show abstract

“…Recently the equivalent circuit model was developed to approximate the real response of a single, one-port SAW resonator. Earlier attempts in the literature tried to estimate the package effects by quasistatic approximation that is easy to combine electromagnetic influence with the response of the SAW device by circuit simulator [1]- [4]. In these approaches, however, the SAW filter response was supposed to only compose equivalent circuits of all one-port SAW resonators.…”

Section: Introductionmentioning

confidence: 99%

Study of crosstalk effects on the packaged SAW by the FDTD method

Lin

2005

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

View full text Add to dashboard Cite

The purpose of this study is to estimate the complete crosstalk effects, including the package and the pads on the surface acoustic wave (SAW) substrate. The coupling influence from the SAW pattern is investigated by the full-wave approach. In order to combine the electromagnetic effects with the surface acoustic wave response, a new approach based on finite difference time domain (FDTD) with equivalent current source method is applied. The resistive voltage source model is carefully used to simulate the situations of measurement by the vector network analyzer more accurately. Two kinds of patterns of one-port SAW resonators with the same package structure and interdigital transducer (IDT) design are studied. From the simulated electromagnetic field distributions over the substrate, it can be seen that, as the pattern on the SAW substrate becomes closer, more input energy will be coupled directly to the parallel pads by crosstalk without filtering. This will lead to more coupling loss and, therefore, the insertion loss becomes universally lower by about 2 to 3 dB. Furthermore, it can be observed that the coupling interference from the SAW pattern is more serious than from the package in this case. Verification with the measurement results shows that our method is able to obtain good agreement and can be used to observe the influence from the SAW pattern that can seriously affect the performance of the SAW device.

show abstract

“…Effects of package parasitics on the performance of SAW filters have been studied by a lot of researchers [2], [4]- [7]. For duplexers, a key specification is the rejection which has to reach 60 dB levels.…”

Section: Full-wave Analysis Of Duplexer Packagementioning

confidence: 99%

“…A duplexer has three ports-the receiver output, the transmitter input and the antenna ports as shown in Fig. 1 [1], [2]. Most critical electrical requirements for a duplexer are very low loss in the transmitter and receiver filter paths and high isolation between them.…”

Section: Introductionmentioning

confidence: 99%

Design of miniaturized RF SAW duplexer package

Dong¹,

Wu²,

Cheema³

et al.

IEEE Symposium on Ultrasonics, 2003

View full text Add to dashboard Cite

This paper provides a comprehensive methodology for accurate analysis and design of miniaturized RF SAW duplexer package. Full-wave analysis is applied to get the package model. Die and bonding wire modeling is also discussed. After that, improvement of the isolation is investigated. Simulation and measurement results are compared and excellent agreement is found. The technique developed in this paper reduces the design cycle time significantly and can be applied to various RF SAW device packages.

show abstract

Surface acoustic wave impedance element ISM duplexer: modeling and optical analysis

Cited by 9 publications

References 37 publications

Design of miniaturized RF SAW duplexer package

Design of miniaturized RF SAW duplexer package

Study of crosstalk effects on the packaged SAW by the FDTD method

Design of miniaturized RF SAW duplexer package

Contact Info

Product

Resources

About