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Parallel-coupled switched delay line (SDL) reconfigurable microwave filter

Wong, Peng Wen (2009) Parallel-coupled switched delay line (SDL) reconfigurable microwave filter. In: Microwave Symposium Digest, 2009. MTT '09. IEEE MTT-S International , 7-12 June 2009, Boston, MA.

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Abstract

Conventional realizations of varactor-loaded tunable filters exhibit high losses due to the degradation of Q factor caused by varactor's losses. These filters also suffer from nonlinear-related problems such as intermodulation distortion due to varactor nonlinearity. In this paper, a new class of parallel-coupled SDL reconfigurable filter is shown. Theoretical analysis together with experimental prototype is presented. The filter provides narrowband quasi-elliptic filter response with constant bandwidth (50 MHz) tuning across 45% tuning range. The minimum stopband rejection level is 45 dB and it possesses passband loss of < 4 dB and an IP3 of >32 dBm for deltaf = 1 MHz.

Item Type:Conference or Workshop Item (Paper)
Subjects:T Technology > T Technology (General)
Departments / MOR / COE:Departments > Electrical & Electronic Engineering
ID Code:1400
Deposited By: Dr. Peng Wen Wong
Deposited On:14 May 2010 05:07
Last Modified:14 May 2010 05:07

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