Title :
New planar compact duel mode filters for mobile communications
Author :
Banciu, M.G. ; Lojewski, G. ; Ioachim, A. ; Nedelcu, L. ; Militaru, N. ; Shen, A. ; Ramer, R.
Author_Institution :
Nat. Inst. of Material Phys., Bucuresti-Magurele, Romania
Abstract :
A new type of dual mode filter is proposed for mobile communications systems in 900 MHz frequency bandwidth such as GSM or GPRS. The planar filters were developed on a 0.635 mm substrate with a 10.8 dielectric constant. Several methods of modes coupling were investigated. Each dual mode resonator has a square-shape with the edge 20.5 mm and contributes with two poles to the filter response.
Keywords :
UHF filters; dielectric devices; mobile communication; resonators; 0.635 mm; 20.5 mm; 900 MHz; GPRS; GSM; dielectric constant; dual mode resonator; duel mode filter; filter response; mobile communications; modes coupling; planar filter; substrate; Band pass filters; Coupling circuits; Dielectrics; Frequency; GSM; Ground penetrating radar; High temperature superconductors; Mobile communication; Resonance; Resonator filters;
Conference_Titel :
Semiconductor Conference, 2004. CAS 2004 Proceedings. 2004 International
Print_ISBN :
0-7803-8499-7
DOI :
10.1109/SMICND.2004.1402823
