Journal ArticleDOI
Design of a New Broad-Band Isolator
Y. Konishi,N. Hoshino +1 more
Reads0
Chats0
TLDR
In this paper, the design theory and experimental results of a proposed broadband technique of an isolator are presented, which not only has a broadband backward loss but also a low broad-band insertion loss.Abstract:
The design theory and experimental results of a proposed broad-band technique of an isolator are presented. The isolator not only has a broad-band backward loss but also a low broad-band insertion loss. The network constants and the performance are obtained in connection with the magnetic loss of ferrite, and they are confirmed by experimental data. The trial ultrawide-band isolator the performance of 20-dB isolation over the frequency band from 70 MHz to 800 MHz.read more
Citations
More filters
Journal ArticleDOI
Ferrite devices and materials
TL;DR: In this article, the development and current status of microwave ferrite technology is reviewed and an introduction to the physics and fundamentals of key ferrite devices is provided, followed by a historical account of the development of ferrimagnetic spinel and garnet (YIG) materials.
Book
The Stripline Circulator: Theory and Practice
TL;DR: In this paper, a complex gyrator circuit of a Weakly Magnetized Junction Circulator (WMJC) is described, and the degree-2 Circulator Gap effects in Circulator Assemblies Suspended Planar Resonator Passband Frequencies of a Three-Port Junction in Immittance Plane Open Walls Spinwave Instability in Magnetic Insulators Frequency Doubling in Ferrites Second-Order Intermodulation in Magnetic insulators Temperature Stability of Magnetic Insulator Below the Kittel Line Third-Order intermodulation Products in Nonlinear Devices in Non Linear Devices
Journal ArticleDOI
An Annotated Bibliography of Microwave Circulators and Isolators: 1968-1975
TL;DR: A bibliography of microwave circulators and isolators from 1968 to 1975 is presented in this paper, where some observations on selected topics are made, such as microwave power and microwave power control.
Journal ArticleDOI
Temperature-Stabilized 1.7-GHz Broad-Band Lumped-Element Circulator
TL;DR: In this article, a new construction technique for broadbanding and temperature stabilization of a lumped-element circulator is presented to obtain a compact circulator for practical usage, and temperature compensation with bias magnetic field of postitive temperature coefficient has been applied to the 1.7-GHz broadband circulators.
Journal ArticleDOI
Lumped element circulators
TL;DR: In this paper, a new approach utilizing capacitive coupling is described along with its experimental performance, where the imperfect coupling between conductors and the non-reciprocal filling factor are introduced into the design formulas to make them more exact.
References
More filters
Journal ArticleDOI
Lumped Element Y Circulator
TL;DR: In this article, a lumped element Y circulator using ferrite, having a mesh mechanism in place of the center conductor of an ordinary Y strip line circulator, is proposed, and a theory relating to bandwidth, insertion loss, and temperature dependence of the reactive energy and the tensor permeability of ferrite is discussed.
Journal ArticleDOI
A High-Power UHF Circulator
TL;DR: In this article, the insertion loss, the bandwidth ratio, and the nonlinearity of a high-power UHF circulator are discussed generally with regard to the characteristics, volume, and filling factor of the ferrite.
Journal ArticleDOI
Performance of lossy H-plane Y circulators
TL;DR: In this article, it was shown that to have a circulator, i.e., a 3-port where zero reflection and infinitely large isolation coincide, one must satisfy two pairs of equations simultaneously, when the losses of the three eigenvectors are not equal.