tends to be sensitive to the tolerances in both the design and fabrication, some related sensitivity analyses based on the proposed parameters have been performed, and it is found that the tuning distortion caused by the variation of resonant frequency of each resonator have some noticeable effect on the desired response. CONCLUSIONThis letter presents the synthesis of a narrow-band bandpass filter for CDMA2000 communications systems, which has a 14pole general Chebyshev function response with a passband of 11.2 MHz at 830 MHz. The coupling matrix of the filter is derived from cost function using nonlinear LM algorithm. The filter response with two pairs of TZs for group delay self-equalization and one pair of TZs at finite frequencies for high selectivity requirement is implemented by using three CQ coupling structures. The frequency responses demonstrating a good agreement between the measured and the simulated specifications are obtained. The proposed method can be further exploited for various mobile communication system applications.

No abstract