The Stripline Circulators: Theory and Practice (Hardcover)

Stripline circulator theory and applications from the world's foremost authority

The stripline junction circulator is a unique three-port non-reciprocal microwave junction used to connect a single antenna to both a transmitter and a receiver. Its operation relies on the interaction between an electron spin in a suitably magnetized insulator with an alternating radio frequency magnetic field. In its simplest form, it consists of a microwave planar gyromagnetic resonator symmetrically coupled by three transmission lines.

This book explores the magnetic interaction involved in the stripline circulator's operation, the nature of the microwave resonator shape, and the network problem that arises in coupling the microwave resonator to the microwave circuit. The stripline circulator is an important device met across a wide range of industries, including wireless, military, radar, and satellite communications. The book's design tables are a unique feature, offering valuable design support.

Written by an international authority on non-reciprocal microwave circuits and devices, the book is organized into logical blocks of chapters that focus on specific effects and circuit aspects of the stripline circulator. Among the highlights of coverage are:

• Spatial shape demagnetizing factors of magnetic insulators

• Standing wave solutions of wye gyromagnetic planar resonators

• Lumped element circulators

• Negative permeability tracking and semi-tracking circulators

• Four-port single-junction circulators

• Fabrication of very weakly and weakly magnetized microstrip circulators

The final chapter explores important and continuing discrepancies between theoretical models and actual practice. For designers building circulators, isolators, and phase shifters; researchers working on the limitation of ferrite devices; and graduate students intending to work in the field, Dr. Helszajn's insights and perspectives are invaluable.

「世界頂尖權威的軸線圓環理論與應用」

軸線圓環是一種獨特的三端口非互易微波連接器，用於將單一天線連接到發射機和接收機。它的運作依賴於一個適當磁化的絕緣體中的電子自旋與交替的射頻磁場之間的相互作用。在最簡單的形式中，它由三條傳輸線對稱耦合的微波平面陀螺磁共振器組成。

本書探討了軸線圓環運作中涉及的磁場相互作用、微波共振器形狀的特性以及在將微波共振器與微波電路耦合時出現的網絡問題。軸線圓環是一種重要的設備，廣泛應用於無線通信、軍事、雷達和衛星通信等各個行業。本書的設計表格是一個獨特的特點，提供有價值的設計支持。

本書由國際非互易微波電路和設備權威撰寫，按照邏輯章節組織，重點關注軸線圓環的特定效應和電路方面。其中的亮點包括：

- 磁性絕緣體的空間形狀去磁因子
- Y型陀螺磁共振器的定常波解
- 集中元件圓環
- 負磁導率追蹤和半追蹤圓環
- 四端口單結構圓環
- 製作極弱和弱磁化微帶圓環

最後一章探討了理論模型與實際應用之間的重要且持續存在的差異。對於建造圓環、隔離器和相位移器的設計師、研究鐵氧體設備限制的研究人員以及打算在這個領域工作的研究生來說，Helszajn博士的見解和觀點是非常寶貴的。