Ferrite Phase Shifters and Other Waveguide Components and Subsystems

Engineering Literature

This engineering library consists of significant papers prepared by MAG personnel, all published in recognized journals or symposium digests. All are available in the open literature, unrestricted by the US Government with regard to distribution, and placed here to allow downloading solely for personal use. Many of these documents are copyrighted by the Institute of Electrical and Electronics Engineers (IEEE) and may not be republished, excerpted, or otherwise reproduced, except by the authors (MAG).

In most cases, papers have been reformatted to a common style and figures redrawn. Except for correcting minor typographical errors, text and figures conform with as-published versions. All documents are PDF files. Click the title of each to download or view.

Papers are organized according to topic. In every case the journal, author or venue of the original publication is cited, and costs referenced were valid at the original time of publication.





Duplexing Ferrite Reciprocal Phase Shifters • Charles R. Boyd, Jr.

The basic structure of microwave ferrite reciprocal phase shifters of the Dual-Mode and Rotary-Field types can readily be adapted to incorporate the function of a circulator outside the phase shifting region.

Stress-Related Insertion Loss in Longitudinal-Field Ferrite Devices • Charles R. Boyd, Jr.

Some microwave ferrimagnetic materials, e.g. compositions of the yttrium-iron garnet family, are known to exhibit sensitivity to intrinsic or externally applied mechanical stress.

Optimum Filling of Ferrite Phase Shifters of Uniform Dielectric Constant • IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-22, No. 4, April 1974 • H. Clark Bell, Jr. and Charles R. Boyd, Jr.

Approximation methods are used to calculate the phase shift and loss for phase shifters containing ferrite and dielectric, with a uniform dielectric constant throughout the waveguide.

Design of Ferrite Differential Phase Shift Sections • 1975 IEEE MTT-S International Microwave Symposium, Palo Alto, CA, May 1975 • Charles R. Boyd, Jr.

Ferrite differential phase shift sections are useful as nonreciprocal circular polarizers in dual-mode phase shifters, as half-wave plates in precision rotary- field phase shifters, and in other devices where nonreciprocal birefringence is desirable.

A Transmission Line Model For The Lossless Ferrite-Loaded Nonreciprocal Waveguide • 1985 SBMO International Microwave Symposium, Campinas, SP, Brazil, July 1985 • Charles R. Boyd, Jr.

In this paper, the lossless TE mode waveguide equivalent-circuit model is extended to permit a description of nonreciprocal phase shift effects by incorporation of distributed gyrators into the elemental line length prototype.

Microwave And Millimeter-Wave Ferrite Phase Shifters • Microwave Journal State-of-the-Art Supplement, September 1989 • William E. Hord

Three ferrite phase shifters–the twin toroid, the dual-mode and the rotary- field–which have found widespread application at microwave frequencies are discussed.

Microwave Phase Shift Using Ferrite-Filled Waveguide Below Cutoff • IEEE Transactions on Microwave Theory and Techniques, Vol. 45, No. 12, Dec. 1997 • Charles R. Boyd, Jr.

Unlike conventional waveguides, lossless ferrite-filled guides may exhibit a complex propagation factor below cutoff of the dominant TE mode when a transverse magnetic bias field is applied.

High Power Reciprocal Ferrite Switches Using Latching Faraday Rotators • 2003 IEEE MTT-S International Microwave Symposium, Philadelphia, PA, June, 2003 • Charles R. Boyd, Jr.

This paper reviews the basic properties of the microwave bridge circuit containing Faraday rotators, with particular emphasis on the fact that high isolation can be preserved over moderate frequency and temperature ranges at the expense of a small increase of insertion loss.

Dual-Mode Latching, Reciprocal Ferrite Phase Shifter • IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-18, No. 12, Dec. 1970 • Charles R. Boyd, Jr.

A ferrite phase shifter has been developed to provide latching reciprocal phase shift over a moderate frequency band.

Comments on the Design and Manufacture of Dual-Mode Reciprocal Latching Ferrite Phase Shifters • IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-22, No. 6, June 1974 • Charles R. Boyd, Jr.

The design principles for dual-mode reciprocal latching ferrite phase shifters are relatively well understood at present.

Accuracy Study for a Moderate Production Quantity of Reciprocal Ferrite Phase Shifters • 1979 IEEE MTT-S International Microwave Symposium, Orlando, FL, April- May 1979 • C. R. Boyd

A moderate quantity of X-band dual-mode reciprocal, latching ferrite phase shifters has been built and tested in a computer-controlled station.

A 60 GHz Dual-Mode Ferrite Phase Shifter • 1982 IEEE MTT-S International Microwave Symposium, Dallas, TX, June 1982 • C. R. Boyd, Jr.

This paper presents the results obtained from an investigation of the feasibility of constructing a dual-mode, latching, reciprocal ferrite phase shifter designed to operate in the 60 GHz frequency region.

A New Type Of Fast-Switching Dual-Mode Ferrite Phase Shifter • IEEE Transactions on Microwave Theory and Techniques, Vol. MTT-35, No. 12, Dec. 1987 • William E. Hord, Charles R. Boyd, Jr., and Daniel Diaz

A new type of dual-mode phase shifter which uses a transversely magnetized variable field section is described.

An Accurate Analog Ferrite Phase Shifter • 1971 IEEE MTT-S International Microwave Symposium, Washington, DC, May 1971 • Charles R. Boyd, Jr.

An analog ferrite phase shifter has been developed for applications requiring an accurate relationship between phase shift and control current.

Medium Power S-Band Rotary Field Ferrite Phase Shifters • 1986 IEEE MTT-S International Microwave Symposium, Baltimore, MD, June 1986 • C. M. Oness, W. E. Hord, C. R. Boyd, Jr.

Reciprocal rotary field phase shifters have been developed at S-band frequencies with peak power capacity of 40 kW, average power of 600 W and switching times of 100 microseconds.

Recent Developments In The Average Power Capacity Of Rotary-Field Ferrite Phase Shifters • 1992 IEEE MTT-S International Microwave Symposium, Albuquerque, NM, June 1992 • William E. Hord

An air-cooled experimental S-band rotary-field ferrite phase shifter with an average power capacity of 3 Kilowatts is described.

Ferrite Rotary-Field Phase Shifters: A Survey of Current Technology and Applications • C. R. Boyd, Jr.

Ferrite Rotary–Field Phase Shifters have been used for more than two decades in applications that require highly accurate phase control at moderate to high microwave power levels.

Design Considerations for Rotary-Field Ferrite Phase Shifters • William E. Hord

Key factors influencing the design of a rotary-field ferrite phase shifter are the required r-f performance, the desired control characteristic and the switching time.

A Latching Ferrite Rotary-Field Phase Shifter • 1995 IEEE MTT-S International Microwave Symposium, Orlando, FL, May 1995 • Charles R. Boyd, Jr.

For more than two decades ferrite rotary-field phase shifters have offered highly accurate reciprocal phase control at moderate to high microwave power levels, at the expense of continuous current excitation.

Impedance Matching of Open-Ended Waveguide Radiating Elements • 1987 SBMO International Microwave Symposium, Rio de Janeiro, Brazil, July 1987 • Charles R. Boyd, Jr.

Impedance matching of open-ended waveguide radiators in a planar phased- array environment is a nontrivial problem that is aggravated by the constraints placed on the element size by antenna needs.

Ferrite Phased Array Antennas: Toward a More Affordable Design Approach • 1987 IEEE AP-S International Symposium Digest, Vol. II, pp. 1168-71

Very great improvements have been realized in the design and manufacture of ferrite phase control elements for electronically scanning phased-array antennas, resulting in a continuing advance in the performance-quality-cost relationship.

A Novel X-Band, Circularly Polarized Feed For The I-30 Radar Antenna System • F. A. Lauriente and W. E. Hord

This paper describes a novel application of septum polarizers in the realization of a feed system for I-30 Radar Antenna System.