title: A compact very wideband amplifying filter based on RTD loaded composite right/left-handed transmission lines.
abstract: The composite right/left-handed (CRLH) transmission line (TL) is presented as a general TL possessing both left-handed (LH) and right-handed (RH) natures. RH materials have both positive permittivity and positive permeability, and LH materials have both negative permittivity and negative permeability. This paper aims to design and analyze nonlinear CRLH-TL transmission line loaded with resonant tunneling diode (RTD). The main application of this design is a very wideband and compact filter that amplifies the travelling signal. We used OrCAD and ADS software to analyze the proposed circuit. CRLH-TL consists of a microstrip line which is loaded with complementary split-rings resonators (CSRRs), series gaps, and shunt inductor connected parallel to the RTD. The designed structure possess a wide band that ranges from 5 to 10.5 GHz and amplifies signal up to 50 %. The proposed design is of interest to microwave compact component designers.
authors.affiliation: Electrical Engineering Department, Islamic University of Gaza, Gaza, Palestine.
authors.forename: Mahmoud O Mahmoud
authors.initials: MO
authors.lastname: Abu-Marasa
authors.affiliation: Electrical Engineering Department, Islamic University of Gaza, Gaza, Palestine.
authors.forename: Hala Jarallah
authors.initials: HJ
authors.lastname: El-Khozondar
keywords: Amplifier; CRLH-TL; Filter; Left-handed materials; RTD; SRRs