Design of a Size-reduced Ring Hybrid Coupler Using an Artificial Dielectric Substrate
نویسندگان
چکیده
منابع مشابه
Size and Design of BroadBand Coupler
Systems generally require wireless communication antennas able to operate in different frequency ranges to meet different communication protocols [3]-[5], this can be done using broadband antennas and multi-band but these are large and difficult to integrate into small mobile devices. This concern with frequency agility is also the need to increase the directivity of the antenna; we proceed to ...
متن کاملAn Artificial Neural Network Approach for the Harmonic Design of Annular Ring Dielectric Resonator Antennas
The design and optimization of an annular ring dielectric resonator antenna (DRA) operating in the C frequency band is addressed. The DRA is intended to be used as the radiating element of a transmitting array of active integrated antennas, its input impedance must exhibit a proper resistive load at the fundamental resonance frequency, as well as a dominant reactive behavior, either inductive o...
متن کاملEmpirical Formulas for Designing Gap-Waveguide Hybrid Ring Coupler
A new type of hybrid ring coupler (or rat-race coupler) the gap-waveguide ring hybrid has been developed in this work. The advantages of the new gap-waveguide ring hybrid are low manufacturing cost since the good electrical contact between metal plates is not required, and lower transmission loss compared to microstrip line since there is no dielectric material needed. Therefore, the gap-wavegu...
متن کاملBroadband and Small-size 3-dB Ring Coupler
A topology for a 3-dB broadband and small-size ring coupler is proposed. It consists of fully-distributed Composite Right-/Left-Handed phase shifters and a Lange coupler. For the fabricated coupler, the frequency bandwidth is one octave, centered on 1.5GHz, while the footprint area is reduced to 25%, compared to the conventional ring coupler topology. The experimental results are in good agreem...
متن کاملControl of nonlinear systems using a hybrid APSO-BFO algorithm: An optimum design of PID controller
This paper proposes a novel hybrid algorithm namely APSO-BFO which combines merits of Bacterial Foraging Optimization (BFO) algorithm and Adaptive Particle Swarm Optimization (APSO) algorithm to determine the optimal PID parameters for control of nonlinear systems. To balance between exploration and exploitation, the proposed hybrid algorithm accomplishes global search over the whole search spa...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of the Korea Academia-Industrial cooperation Society
سال: 2014
ISSN: 1975-4701
DOI: 10.5762/kais.2014.15.5.3139