Title :
Design of high directivity Microstrip Coupler with single slot on coupled edges for GSM dual band
Author :
Maheswari, S. ; Jayanthy, T.
Author_Institution :
Sathyabama Univ., Chennai, India
Abstract :
In this paper a simple design procedure is used with accurate formulation. It comprises a complete design of symmetrical two-line Microstrip directional coupler including physical length at the desired operational frequency. The design procedure doesn´t require the prior knowledge of the physical geometry of the coupler and requires only the information of the port impedances, coupling and operational frequency. To improve the directivity, the microstrip coupler was designed by a new approach for phase velocities compensation, which utilizes a couple-Microstrip with a single slot on its inner edges. Using this new design, a 15-dB coupler is designed and a high directivity of 36 dB or more is obtained over a considerably wide bandwidth for GSM dual band applications. The validity of the design concept is confirmed by em-simulations.
Keywords :
cellular radio; microstrip directional couplers; GSM dual band; gain 15 dB; gain 36 dB; high directivity microstrip directional coupler; operational frequency; single slot; Conferences; Electron devices; Solid state circuits; Microstrip; directional coupler; frequency;
Conference_Titel :
Electron Devices and Solid-State Circuits (EDSSC), 2010 IEEE International Conference of
Conference_Location :
Hong Kong
Print_ISBN :
978-1-4244-9997-7
DOI :
10.1109/EDSSC.2010.5713702