Title :
Design of new hybrid-ring, directional coupler using λ/8 or λ/6 sections
Author :
Kim, Dong II ; Yang, Gyu-Sik
Author_Institution :
Dept. of Electron. & Commun. Eng., Korea Maritime Univ., Pusan, South Korea
fDate :
10/1/1991 12:00:00 AM
Abstract :
The authors propose a design method for 1.25 λ-ring and 7λ/6-ring 3-dB directional couplers using λ/8 and λ/6 sections, respectively. In addition, the frequency characteristics of the couplings together with the isolations, the return losses, and the phase differences between the output ports are calculated. The method was experimentally verified for a microstrip network, proving its validity for a microwave component with the basic λ/8 and λ/6 sections proposed
Keywords :
S-parameters; directional couplers; equivalent circuits; losses; strip line components; λ/6 sections; λ/8 sections; 3 dB type; design method; directional coupler; frequency characteristics; hybrid-ring; isolations; microstrip network; microwave component; phase differences; return losses; Admittance; Antenna arrays; Antenna feeds; Arm; Design methodology; Dipole antennas; Directional couplers; Directive antennas; Frequency; Power dividers;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
