The Transactions of The Korean Institute of Electrical Engineers (전기학회논문지)

The Korean Institute of Electrical Engineers (대한전기학회)
권호 표지
DOI QR코드

DOI QR Code

Design of 7 Bands LTCC Front-end Module Embedded LPF

LPF 내장형 7중 대역 LTCC 프런트엔드모듈 설계

  • Received : 2011.10.07
  • Accepted : 2012.02.27
  • Published : 2012.03.01
Download PDF
⟨ Previous Next ⟩

Abstract

In this paper, we have designed and fabricated 7-bands (GSM 850/900, DCS/PCS, and UMTS 3 bands) LTCC front end module (FEM) embedded LPF (low pass filter) to efficiently eliminate harmonics generated in TX path. The proposed FEM is composed of flip-chip typed CMOS SP9T switch to select transceiver signals, dual type SAW filters to receive Rx signals, and 0603 size chip components for the antenna matching and ESD protection. The whole size of FEM is $4.5{\times}3.2{\times}1.2mm^3$. The insertion loss of Tx and Rx ports are measured at 1.7 dB and 4.8 dB, respectively.

Keywords

References

  1. T. Ranta, J. Ella, and H. Pohjonen, "Antenna switch linearity requirements for GSM/WCDMA mobile phone front-ends," IEEE 2005 Wireless Technology, pp. 23-26, 2005.
  2. D. -S. Kim, J. C. Kim, H.M.Cho, N.K. Kim, and J. C. Park, "An LTCC power amplifier module integrated with SAW duplexer," 2005 European Microwave Conference, vol. 3, p.4, Oct. 2005.
  3. E. Kim, Y. S. Lee, C. S. Yoo, W. S. Lee, and J. C. Park, "A power amplifier module with fully embedded passive components in a LTCC substrate for K-PCS band mobile phone," 2003 European Microwave Conference, vol. 1, pp. 253-256, 2003.
  4. Lianjun Liu, C. Ramiah, Qiang Li, S. Pacheco, Shunmeen Kuo, M. Miller, S. Marshall, M. Watts, and P. Piel, "Integrated passive technology for wireless basestation applications," IEEE International Microwave Symposium, pp. 1173-1176, Jun. 2007.
  5. Kai Liu, R. C. Frye, "Small form-factor integrated passive devices for SIP applications," IEEE International Microwave Symposium, pp. 2117-2120, Jun. 2007.
  6. David M. Pozar, Microwave Engineering, 3rd edition, Wiley, pp. 389-405, 2005.