Title :
Miniaturized 3-dB ring hybrid terminated by arbitrary impedances
Author :
Ahn, Hee-Ran ; Chang, Ik-soo ; Yun, Sang-Won
Author_Institution :
Dept. of Electr. Eng., Sogang Univ., Seoul, South Korea
fDate :
12/1/1994 12:00:00 AM
Abstract :
In the UHF or VHF band, the new design method of a small-sized 3-dB 0°/180° ring hybrid terminated by arbitrary impedances using both lumped and distributed elements is presented. At the center frequency of 900 MHz, the small sized 3-dB 0°/180° hybrid terminated by arbitrary impedances is designed, analyzed and tested. Good agreement is obtained between measured and predicted results. Since both lumped and distributed elements are used, the proposed hybrid occupies about 30% of an all distributed-type hybrid
Keywords :
UHF couplers; VHF devices; equivalent circuits; microstrip couplers; 900 MHz; UHF band; VHF band; design method; distributed elements; lumped elements; miniaturized 3-dB hybrid; ring hybrid; Coupling circuits; Design methodology; Dielectric substrates; Distributed parameter circuits; Equivalent circuits; Impedance; Inductors; Power dividers; Power transmission lines; Propagation losses;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
