Joseph Helszajn

Q: What Schools Are Affiliated With Joseph Helszajn

Joseph Helszajn is affiliated with the following schools: California Institute of Technology, Stanford University, Heriot-Watt University

Joseph Helszajn's AcademicInfluence.com Rankings

Joseph Helszajn

Engineering

#6509

World Rank

#7841

Historical Rank

Mechanical Engineering

#788

World Rank

#844

Historical Rank

Electrical Engineering

#2434

World Rank

#2549

Historical Rank

Applied Physics

#2726

World Rank

#2770

Historical Rank

engineering Degrees

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Engineering

Joseph Helszajn's Degrees

PhD Electrical Engineering Stanford University
Bachelors Mechanical Engineering California Institute of Technology

Why Is Joseph Helszajn Influential?

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According to Wikipedia, Joseph Helszajn , was Professor of Microwave Engineering at Heriot-Watt University. He was best known for his work on non-reciprocal microwave circuits and devices, such as yttrium iron garnet isolatorss and circulators. During his tenure, Helszajn has authored multiple engineering textbooks on non-reciprocal microwave devices.

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Joseph Helszajn's Published Works

Number of citations in a given year to any of this author's works

Total number of citations to an author for the works they published in a given year. This highlights publication of the most important work(s) by the author

Published Works

Planar Triangular Resonators with Magnetic Walls (1978) (216)
Ridge waveguides and passive microwave components (2000) (112)
A substrate integrated waveguide degree-2 circulator (2004) (70)
YIG Resonators and Filters (1985) (60)
Design Data for Radial-Waveguide Circulators Using Partial-Height Ferrite Resonators (1975) (51)
Nonreciprocal microwave junctions and circulators (1975) (49)
Principles of microwave ferrite engineering (1969) (45)
Passive and active microwave circuits (1978) (42)
A Finite Element Analysis of Planar Circulators Using Arbitrarily Shaped Resonators (1982) (42)
Synthesis of Lumped Element, Distributed and Planar Filters (1990) (40)
Circulators Using Planar Triangular Resonators (1979) (40)
Microwave Planar Passive Circuits and Filters (1994) (37)
The Stripline Circulator (2008) (34)
Specific Equations for One and Two Section Quarter-Wave Matching Networks for Stub-Resistor Loads (1982) (34)
Resonant Frequencies, Q-Factor, and Susceptance Slope Parameter of Waveguide Circulators Using Weakly Magnetized Open Resonators (1983) (28)
The Stripline Circulator: Theory and Practice (2008) (27)
Synthesis of Quarter-Wave Coupled Circulators with Chebyshev Characteristics (Short Papers) (1972) (26)
The Synthesis of Quarter-Wave Coupled Circulators with Chebyshev Characteristics (1972) (26)
Circulators Using Planar WYE Resonators (1981) (23)
Operation of Tracking Circulators (1981) (22)
Microwave engineering : passive, active, and non-reciprocal circuits / Joseph Helszajn (1991) (22)
Ferrite phase shifters and control devices (1989) (21)
Operation of High Peak Power Differential Phase Shift Circulators at Direct Magnetic Fields Between Subsidiary and Main Resonances (1978) (19)
Microwave Measurement Techniques for Below-Resonance Junction Circulators (Short Papers) (1973) (19)
Experimental evaluation of junction circulators: a review (1994) (18)
A ferrite ring stripline junction circulator (1966) (17)
Design of Waveguide Circulators with Chebyshev Characteristics Using Partial-Height Ferrite Resonators (1984) (17)
Susceptance-slope parameter of waveguide partial-height ferrite circulators (1975) (16)
Standing Wave Solutions of Planar Irregular Hexagonal and Wye Resonators (1981) (16)
Fabrication of very weakly and weakly magnetized microstrip circulators (1998) (16)
Mode charts for partial-height ferrite waveguide circulators (1975) (16)
Scattering Matrices of Junction Circulator with Chebyshev Characteristics (1975) (15)
Voltage - current definition of impedance of single-ridge waveguide (1999) (15)
Characteristics of Circulators Using Planar Triangular and Disk Resonators Symmetrically Loaded with Magnetic Ridges (1980) (15)
Voltage-current definition of impedance of double ridge waveguide using the finite element method (1998) (14)
Adjustment of In-Phase Mode in Circulators Using Turnstile Junctions (1985) (14)
Mode charts for microstrip resonators on dielectric and magnetic substrates using a transverse-resonance method (1979) (14)
Waveguide and Stripline 4-Port Single-Junction Circulators (Short Papers) (1973) (13)
Mode nomenclature of circular gyromagnetic and anisotropic waveguides with magnetic and open walls (1987) (13)
Composite-Junction Circulators Using Ferrite Disks and Dielectric Rings (1974) (12)
Frequency Response of Quarter-Wave Coupled Reciprocal Stripline Junctions (1973) (12)
Quarter-Wave Coupled Junction Circulators Using Weakly Magnetized Disk Resonators (1982) (12)
Cutoff space of cloverleaf resonators with electric and magnetic walls (1992) (11)
The Adjustment of the m-Port Single- Junction Circulator (1970) (11)
Finite element solution of longitudinally magnetized elliptical gyromagnetic waveguides (1989) (11)
Dissipation and Scattering Matrices of Lossy Junctions (Short Papers) (1972) (11)
Adjustment of the 4-port single-junction circulator (1968) (11)
Mode Chart for E-Plane Circulators (Correspondence) (1972) (11)
PROPAGATION CONSTANT OF DIELECTRIC LOADED SQUARE WAVEGUIDE (1996) (10)
Normal mode nomenclature of quadrupole gyromagnetic waveguides (1991) (9)
Verification of first circulation conditions of turnstile waveguide circulators using a finite-element solver (2005) (9)
Three-resonant-mode adjustment of the waveguide circulator (1972) (9)
Frequency and bandwidth of H plane TEM junction circulator (1970) (9)
The Junction Inductance of a Lumped-Constant Circulator (Correspondence) (1970) (9)
Low-Loss High-Peak-Power Microstrip Circulators (1981) (9)
Parallel Pumping in Hexagonal Ferrites with the Dc Field Off the Easy Plane (1970) (9)
Mode charts of gyromagnetic planar ring resonators (1987) (8)
Circulators Using Triangular and Irregular Hexagonal Planar Resonators (2008) (8)
Suppression of Higher Order Modes in Waveguide-Junction Circulators Using Coupled Open Dielectric Resonators (Letters) (1976) (8)
Simplified theory of nonlinear phenomena in ferrimagnetic materials (1967) (7)
First-Order Nonlinear Theory in Hexagonal Ferrites with Planar Anisotropy under Perpendicular Pumping (1972) (7)
Susceptance-slope parameter of junction circulators (1972) (7)
Microwave Polarizers, Power Dividers, Phase Shifters, Circulators, and Switches (2018) (7)
Spatial shape demagnetising factors of disc, equilateral triangle and irregular hexagonal magnetic insulators (2005) (7)
A simplified theory of the three-port junction ferrite circulator (1967) (7)
Loaded Q-Factors of Partial-Height and Full-Height Triangular Resonators for Use in Waveguide Circulators (1979) (7)
Impedance and propagation in ridge waveguides using the transverse resonance method (2000) (7)
Stability Analysis of 2-D Systems (1980) (6)
Green's Function, Finite Elements and Microwave Planar Circuits (1996) (6)
Aspect ratio of open resonators in design of evanescent mode E-plane circulators (1990) (6)
Contour-integral equation formulation of complex gyrator admittance of junction circulators using triangular resonators (1985) (6)
Dielectric and permeability effects in HE111 open demagnetised ferrite resonators (1986) (6)
A novel ferrite quarter-wave plate (1964) (6)
A Finite-Element Algorithm for the Adjustment of the First Circulation Condition of the Turnstile Waveguide Circulator (2012) (6)
Synthesis of wide-band planar circulators using narrow coupling angles and undersized disk resonators (1991) (5)
A high-speed tem junction ferrite modulator using a wire loop (1968) (5)
An H-plane high-power TEM ferrite junction circulator (1967) (5)
High-power waveguide circulators using quarter-wave long composite ferrite/dielectric resonators (1981) (5)
Complex Gyrator Circuits of Planar Circulators Using Higher Order Modes in a Disk Resonator (1983) (5)
Cut-off space of a gyromagnetic planar disk resonator with a triplet of stubs with up and down magnetisation (2012) (5)
A Two-Port WR75 Waveguide Turnstile Gyromagnetic Switch (2010) (5)
Characteristic Planes and Scattering Matrices of E and H-Plane Waveguide Tee Junctions (2014) (5)
A nonreciprocal tunable waveguide directional filter using a turnstile open gyromagnetic resonator (1993) (5)
Complex Gyrator Circuit of an Evanescent-Mode E-Plane Junction Circulator Using H-Plane Turnstile Resonators (1987) (5)
The Use of Composite Junctions in the Design of High Power Stripline Circulators (1968) (5)
Complex gyrator circuit of a junction circulator using weakly magnetised planar irregular hexagonal resonator (1996) (5)
Calibration and adjustments of degree-1 and -2 re-entrant turnstile circulators using a partially recessed quarter-wave long dielectric resonator (2016) (5)
Adjustment of degree-2 H-plane waveguide turnstile circulator using prism resonator (1999) (5)
Waveguide Subsidiary Resonance Ferrite Limiters (1977) (5)
Reflection angles of in-phase and split counter-rotating eigenvalues of the three-port circulator (2006) (5)
Electrically symmetric solution of the 3-port H-plane waveguide tee junction at the Dicke ports (2015) (4)
Switching criteria for waveguide ferrite devices (1965) (4)
A degree-2 WRD750 ridge waveguide junction circulator using a gyromagnetic post resonator (1998) (4)
Design of a 90° 12 GHz faraday rotator polariser using a cavity technique (1985) (4)
Synthesis of octave-band quarter-wave coupled semi-tracking stripline junction circulators (1995) (4)
The Electrically Symmetrical $E$-Plane Waveguide Tee Junction at the Dicke and Altman Planes (2016) (4)
Circular polarisation in a double-ridge waveguide (2005) (4)
Unified approach to lumped-element, stripline and waveguide-junction circulators (1976) (4)
Synthesis of Quarter-Wave Coupled Junction Circulators with Degrees 1 and 2 Complex Gyrator Circuits (1985) (4)
Mode charts of magnetised and demagnetised planar hexagonal resonators on ferrite substrates using finite elements (1984) (4)
Post dielectric resonator at the junction of three rectangular waveguides: calculations and measurements (2003) (4)
Insertion Loss of 3-Port Circulator with One Port Terininated in Variable Short Circuit (Short Papers) (1975) (3)
Complex gyrator circuit of junction circulators using weakly magnetised ring resonators (1992) (3)
Adjustment of H‐plane waveguide tee‐junction circulator using a circular post gyromagnetic resonator (2014) (3)
Fringing effects in re-entrant and inverted re-entrant turnstile waveguide junctions using cylindrical resonators (2011) (3)
UHF irregular hexagonal gyromagnetic resonators symmetrically loaded with magnetic walls (1999) (3)
Quality Factor of the Waveguide Re-Entrant Turnstile Junction Circulator (2015) (3)
Scattering parameters of loop coupled YIG resonators (1978) (3)
First circulation condition of E-plane circulator using single-prism resonator (1999) (3)
Complex gyrator circuit of three-port circulators using gyromagnetic resonators with six-fold symmetry (2001) (3)
Two-port dipolar switch (1974) (3)
Differential phase shifters using corrugated, ridge, and fin loaded waveguides (2009) (3)
Measurement of symmetrical waveguide discontinuities using the eigenvalue approach (1980) (3)
The ridge waveguide (2000) (3)
A method of determining the effective axial demagnetizing factor of an irregular hexagonal magnetic insulator (2005) (3)
Upper and lower bounds of 180° unit element of a ridge waveguide: Calculations and measurements (2001) (3)
1-port topology of the degree-1 and -2 terminated circulator (2000) (3)
Analysis of a coupled waveguide circulator using non-reciprocal attenuation (1966) (3)
FIELD DISPLACEMENT, CIRCULAR POLARIZATION, SCALAR PERMEABILITIES AND DIFFERENTIAL PHASE SHIFT IN EDGE MODE FERRITE DEVICES. (1985) (3)
Frequency response of N-port planar gyromagnetic circuits using the mutual energy-finite element method (1997) (2)
Short-line matching networks for circulators and resonant loads (1983) (2)
Insertion phase and phase slope parameter of microwave junction circulators (2004) (2)
3.7–4.2 GHz 90° coaxial ferrite differential phase shifter (1982) (2)
Standing-wave solution of 3-port junction circulator with 1 port terminated in a variable short circuit (1979) (2)
Approximate upper and lower bounds on the VSWR of a 3-port circulator with nonideal loads (1997) (2)
Split Frequencies and Susceptances of the Three-Port Junction Circulator From an Experimental Determination of the Complex Gyrator Circuit (2008) (2)
Turbo codes: principles and applications [Book Review] (2002) (2)
Nonreciprocal circular polariser using hexagonal ferrites with planar anisotropy (1968) (2)
Characterisation of Planar WYE Shaped Resonators for Use in Circulator Hardware (1980) (2)
18-26 GHz FINLINE RESONANCE ISOLATORS USING HEXAGONAL FERRITES. (1985) (2)
The higher order mode stripline circulator using a gyromagnetic disk resonator (2002) (2)
Coupled-wave description of the absorption-type ferrite modulator (1965) (2)
Characteristic impedance in triple ridge waveguide (2002) (2)
Cut-off numbers, split phase constants and mode nomenclature of circular gyromagnetic and anisotropic waveguides with electric, magnetic and open walls (1987) (2)
ADJUSTMENT OF IN-PHASE MODE IN TURNSTILE JUNCTION CIRCULATOR. (1985) (2)
Design off quarter-wave plates using a cavity-resonator technique (1987) (2)
Experimental characterisation of a reciprocal microstrip 3-port junction (1991) (1)
Phase in non-reciprocal gyromagnetic waveguides using multiple ferrite tiles (2013) (1)
Adjustment of Prism Turnstile Resonators Latched by Wire Loops (2018) (1)
Temperature stability of quality factor of junction circulators (1995) (1)
UHF techniques for lumped constant circulators (2005) (1)
Circulation solutions of three-port circulators using first order split impedance zeros (2006) (1)
Synthesis of quarter-wave coupled junction circulators using moderately magnetised disc resonators with commensurate eigennetworks (1996) (1)
Mode chart and susceptance slope parameter of an E-plane circulator using coupled prism resonators (1999) (1)
Second-order spin-wave instability in Mn-Zn2Y planar hexagonal ferrites (1969) (1)
Suppression of higher-order modes in subsidiary resonance waveguide limiters (1977) (1)
The Operation of Nonreciprocal Microwave Faraday Rotation Devices and Circulators (2018) (1)
The Lumped Element Circulator (2008) (1)
Architecture of Symmetrical Stripline Junction Circulators (2008) (1)
Adjustment of Okada resonator using composite chambers (1995) (1)
Complex gyrator circuit of a waveguide junction circulator using an Okada resonator (1999) (1)
WRD 200 90o waveguide differential phase-shift section (1987) (1)
Microwave bandwidth of high-power ferrite devices biased between the main and subsidiary resonances (1984) (1)
Synthesis of series STUB-R complex gyrator circuits using halfwave long impedance transformers (1993) (1)
E-plane finline circulator using coupled H-plane turnstile resonators (1988) (1)
Characterisation of discontinuity effects in triple ridge waveguides using 90° and 180° unit elements (2003) (1)
Characteristic Planes of Microstrip and Unilateral Finline Tee-junctions (2013) (1)
Impedance and propagation in ridge waveguide (1997) (1)
A Finite‐Element Algorithm for the Adjustment of the First Circulation Condition of the H‐plane Turnstile Waveguide Circulator (2018) (0)
The Stripline Circulator Using a Gyromagnetic Planar Disk Resonator (2008) (0)
Eigenvalue Adjustment of ThreePort Circulator (2008) (0)
Green's Function Description of Junction Circulator (2008) (0)
A mode matching adjustment of the first circulation condition of an Inverted re-entrant turnstile waveguide circulator using an arbitrarily oriented prism resonator. (2012) (0)
Faraday rotation in gyromagnetic quadruple ridge waveguide (2000) (0)
Ridge, Coaxial, and Stripline Phase‐shifters (2018) (0)
Inverted turnstile finline junction circulator (2000) (0)
Circular polarisation in ridge and dielectric loaded ridge waveguides (2000) (0)
Eigenvalue description of the quarter wave plate (1992) (0)
Quality factor of an evanescent mode Okada resonator (1998) (0)
Design of communication circulators using a triplet of U.E.'s at the junction of a circular plate (2010) (0)
Polynomial representations of split-phase constants of gyromagnetic waveguides with electric and magnetic walls (1997) (0)
The Turnstile Junction Circulator (2018) (0)
Fields, propagation and attenuation in double ridge waveguide (2000) (0)
Standing Wave Solutions and Cutoff Numbers of Planar WYE and Equilateral Triangle Resonators (2018) (0)
Characterisation of single ridge waveguide using the finite element method (2000) (0)
The E‐plane Waveguide Wye Junction (2018) (0)
Degeneracies between symmetric and degenerate pairs of counter-rotating modes in a disk resonator using dielectric plugs: Research Articles (2007) (0)
DESIGN OF 90 degree 12 GHz FARADAY ROTATOR POLARISER USING A CAVITY TECHNIQUE. (1985) (0)
Variational calculus, functionals and the Rayleigh-Ritz procedure (2000) (0)
Complex gyrator circuit of a three-port circulator using a planar resonator composed of a gyromagnetic disk, a triplet of UEs and a triplet of single radial magnetic walls (2009) (0)
Propagation constant and impedance of dielectric loaded ridge waveguide using a hybrid finite element solver (2000) (0)
Synthesis of UHF circulators using quarter-wave coupled triangular resonators on a single substrate above the uniform line (2009) (0)
0°, 90°, and 180° Passive Power Dividers (2018) (0)
Re-entrant finline junction circulator (1998) (0)
Vector finite element calculations of Faraday rotation in quadruple ridge waveguides with gyromagnetic tiles (2001) (0)
Edge Mode Phase‐shifter (2018) (0)
Contributors, Mar. 1977 (1977) (0)
Ridge cross-guide directional coupler (2000) (0)
Inverted Re-Entrant Turnstile Waveguide Circulator Using Prism Resonator with Arbitrary Orientation (2015) (0)
Off/On and On/Off Two‐port E ‐plane Waveguide Switches Using Turnstile Resonators (2018) (0)
Semi-tracking ridge circulator (2000) (0)
Characterisation of discontinuity effects in single ridge waveguide (2000) (0)
Planar Resonators with Triplets of Radial and Circumferential Magnetic Walls (2008) (0)
Quadruple ridge waveguide (2000) (0)
Technical Memorandum. Eigenvalue analysis of 4-port crosswire yig coupling circuit (1983) (0)
Finite Element Formulation of Junction Circulator (2008) (0)
Microwave Switching Using Junction Circulators (2018) (0)
Unloaded quality factors of junction circulators (2005) (0)
Technical memorandum. WRD 200 90° waveguide differential phase-shift section (1987) (0)
The FourPort Single Junction Stripline Circulator (2008) (0)
Architecture of symmetrical waveguide junction circulators (2006) (0)
Reciprocal Quarter‐wave Plates in Circular Waveguides (2018) (0)
Degeneracies between symmetric and degenerate pairs of counter‐rotating modes in a disk resonator using dielectric plugs (2007) (0)
Operation of the Tracking and Semitracking Stripline Circulators (2008) (0)
Nonreciprocal ridge isolators and phase-shifters (2000) (0)
Approximate determination of effective radius and effective dielectric constant of microstrip disc resonators (1981) (0)
Synthesis of Wideband Planar Circulators Using Narrow Coupling Angles (2008) (0)
2000 W mean-power X-band waveguide junction circulator using a composite turnstile resonator (1983) (0)
The Waveguide H ‐plane Tee Junction Circulator Using a Composite Gyromagnetic Resonator (2018) (0)
Contributors, Mar. 1975 (1975) (0)
Finite Element Adjustment of the Rectangular Waveguide‐latched Differential Phase‐shifter (2018) (0)
Finite element solution of longitudinally magnetised elliptical waveguides (1989) (0)
Operation of Two‐port On/Off and Off/On Planar Switches Using the Mutual Energy–Finite Element Method (2018) (0)
Directly coupled filter circuits using immittance inverters (2000) (0)
Complex Gyrator Circuit of Negative Permeability Tracking and Semitracking Circulators (2008) (0)
Technical memorandum. Microwave bandwidth ofhigh-power ferrite devices biasedbetween the main and subsidiary resonances (1984) (0)
WR75 junction circulator using 90/spl deg/ and 180/spl deg/ ridge UEs (2002) (0)
Remembering Joseph Helszajn [MTT-S Society News] (2020) (0)
Impedance of double ridge waveguide using the finite element method (2000) (0)
Fabrication of UHF Circulators Using Irregular Hexagonal Gyromagnetic Resonators (2008) (0)
Impedance Matrix of Junction Circulator (2008) (0)
Even and odd mode cut-off parameters of pairs of ridges in rectangular waveguide using a mode matching solver (2005) (0)
Edge mode effect in the operations of waveguide twin-slab ferrite phase shifter (1989) (0)
Note on Tetrahedral Junction (Correspondence) (1965) (0)
Scattering Matrix of mPort Junction (2008) (0)
The OnePort Topology of the Degree1 and Degree2 Terminated Circulator (2008) (0)
Contributors, Oct. 1970 (1970) (0)
Propagation and impedance in rectangular waveguides (2000) (0)
Complex gyrator circuit of 4-port single junction circulator (2004) (0)
COMPLEX PROPAGATION CONSTANT OF E-PLANE (1977) (0)
Ridge waveguide filter design using mode matching method (2000) (0)
Cross-guide directional coupler in ridge waveguide (1999) (0)
Open-circuit parameters of circulators using side-coupled wye resonators: an impedance pole approach (2004) (0)
Numerical Adjustment of Waveguide Ferrite Switches Using Tri‐toroidal Resonators (2018) (0)
An FE adjustment of a waveguide turnstile junction circulator using a three quarter wavelength gyromagnetic resonator. (2012) (0)
Standing Wave Solution of Wye Gyromagnetic Planar Resonator (2008) (0)
Cutoff Space of Cloverleaf Resonators with Magnetic Walls (2008) (0)
Tensor Permeability in a Magnetic Insulator (2008) (0)
Semi-experimental characterisation of the 3-port waveguide junction circulator containing a gyromagnetic post resonator (2012) (0)
Circular Polarization in Parallel Plate Waveguides (2018) (0)
Nonreciprocal Ferrite Quarter‐wave Plates (2018) (0)
Synthesis of Stepped Impedance Transducers (2008) (0)
The Two‐port On/Off H ‐plane Waveguide Turnstile Gyromagnetic Switch (2018) (0)

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Joseph Helszajn's Published Works

Published Works

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What Schools Are Affiliated With Joseph Helszajn?

Joseph Helszajn's AcademicInfluence.com Rankings