Microstrip diplexer design based on two square open loop bandpass filters for RFID applications. Issue 4 (12th March 2018)

• Record Type: Journal Article
• Authors: Tizyi, Hafid; Riouch, Fatima; Tribak, Abdelwahed; Najid, Abdellah; Mediavilla, Angel
• Is Part Of: International journal of microwave and wireless technologies. Volume 10:Issue 4(2018)
• Page Start: 412
• Page End: 421
• Publication Date: 2018-03-12
• Subjects: Antenna design, -- filters, -- modelling and measurements, -- RFID andsensors; Wireless communication systems -- Periodicals; Microwave circuits -- Periodicals; Radio frequency -- Periodicals; 621.381305
• DOI: 10.1017/S1759078718000314
• Languages: English
• ISSNs: 1759-0787

Abstract

Abstract: In this work, a simple and efficient approach to design a microstrip diplexer is proposed. It is based on the combination of two compact Square Open Loop Resonator band pass filters. These filters are designed for Radio Frequency Identification application at 2.45 GHz frequency. Using the Chebychev approximation, the two filters and diplexer are designed, simulated, fabricated, and measured. The results show that the diplexer presents a high selectivity, a good insertion loss and high isolation (>40 dB) with the compact size. The diplexer also shows a good performance when associated with the patch antenna operating at 2.45 GHz.