Dual Band Filter Design for GSM Bands Using Frequency Mapping and Real Frequency Technique

YILDIZ S., Kilinc S. , Aksen A., Yarman S. B.

18th Mediterranean Microwave Symposium (MMS), İstanbul, Türkiye, 31 Ekim - 02 Kasım 2018, ss.164-167 identifier

  • Cilt numarası:
  • Basıldığı Şehir: İstanbul
  • Basıldığı Ülke: Türkiye
  • Sayfa Sayıları: ss.164-167


In this study, dual band frequency mapping is incorporated with Real Frequency Technique to design a dual band filter for GSM900 and GSM1800/UMTS bands. The proposed real frequency design technique (RFT) involves a parametric representation of input impedance of filter and the use of a dual band (DB) frequency mapping. A direct DB frequency mapping from low pass proto-type network is utilized along with the design and optimization of a low pass prototype network. Microstrip implementation of the designed filter and measurement results of the design are presented.