Proceedings ArticleDOI
Bandwidth design of ferrite-based circulators
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In this paper, the authors report on the RF design of planar ferrite-based RF circulators with bandwidth control through the height of the ferrite puck and the DC magnetic bias.Abstract:
This paper reports on the RF design of planar ferrite-based RF circulators with bandwidth control through the height of the ferrite-puck and the DC magnetic biasing. The analysis is performed with the aid of a commercially-available finite-element solver for a design frequency of 3.9 GHz. The study reveals that by varying the ratio of ferrite height to substrate height within the circulator cavity from 0.1 to 1, the 1-dB bandwidth varies between 5 and 36.2%. While conventional RF circulators are designed for a fill factor equal to 1, this study shows that maximum bandwidth is obtained for a fill factor of 0.82.read more
Citations
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Proceedings ArticleDOI
Compact Suspension-stripline Circulator For High Power Applications
TL;DR: In this paper, a Y junction circulator by using planar triangular ferrite resonators has been designed, simulated and discussed, and the power capacity of the circulator is discussed and simulated in full-wave simulation software ANSYS Electronics Desktop.
Journal ArticleDOI
High Remanence Ratio of Aluminum Substituted Hexagonal Barium Ferrite Films for Self-Biased Microwave Devices
Bin Xie,Xiaoyuan Zhou,Wei Chen,Lining Fan,Lixin Zhang,Runqiu Li,Qiong Wu,Yanhui Wu,Yaning Lin,Peng Zheng,Liang Zheng,Yang Zhang +11 more
Proceedings ArticleDOI
Out-of-Band Isolation Enhancement in RF Circulators With Embedded Filtering Functionality
TL;DR: In this paper , the authors explore design methodologies to enhance the out-of-band isolation (IS) bandwidth of RF co-designed components that exhibit the co-located functions of a bandpass filter and circulator (BPFC).
Ferrite-Based Multiport Circulators With RF Co-Designed Bandpass Filtering Capabilities
Andrea Ashley,Dimitra Psychogiou +1 more
TL;DR: In this paper , a bandpass filter/circulator (BPFC) concept is proposed based on a hybrid implementation approach, where dual-mode non-reciprocal ferrite-based resonators (FBRs) are cascaded with microwave resonators and mixed-electromagnetic couplings.
Out-of-Band Isolation Enhancement in RF Circulators With Embedded Filtering Functionality
Andrea Ashley,Dimitra Psychogiou +1 more
TL;DR: In this paper , the authors explore design methodologies to enhance the out-of-band isolation (IS) bandwidth of RF co-designed components that exhibit the co-located functions of a bandpass filter and circulator (BPFC).
References
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Journal ArticleDOI
On Stripline Y-Circulation at UHF
TL;DR: In this article, the simplified boundary value problem of the circular strip-line Y-circulator is stated and, following experimental results, the circulation parameters are calculated and discussed, and the frequency characteristics are evaluated and a general method for broadbanding the device is presented.
Book
Microwave circulator design
TL;DR: In this paper, the authors introduce the theory of operation of a circulator and its application in the following applications: Material Selection Electrical Design Magnetic Design Mechanical Design Assembly and Testing Tuning Design Examples List of Symbols Index Frequently-Used Equations
Journal ArticleDOI
Bandwidth Optimization of an Integrated Microstrip Circulator and Antenna Assembly: Part 2
TL;DR: It is shown herein how the Z parameters can be invoked in some search algorithm to optimize the parameters of the ferrite, to achieve either superb circulator bandwidth or isolation performance.
Proceedings ArticleDOI
The Analysis of the Circulator Frequency Shift with the Temperature Variation
TL;DR: In this paper, the authors derived the formula of the working frequency of a microwave circulator and derived an analytioal expression for the relative frequency shift vs. temperature variations in the?20°C...+60°C temperature range.