INTRINSIC MODES OF RADIATION IN FERRITE PATCH ANTENNAS

被引：18

作者：

HOW, H ^{[1
]}

FANG, TM ^{[1
]}

VITTORIA, C ^{[1
]}

机构：

[1] NORTHEASTERN UNIV,DEPT ELECT & COMP ENGN,BOSTON,MA 02115

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1994年 / 42卷 / 06期

关键词：

D O I：

10.1109/22.293567

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

We have found two types of radiation modes for patch antennas loaded with ferrite materials. Each mode of radiation is a linear combination of normal modes of propagation in parallel plate waveguide separated by a slab of ferrite material. We have introduced new boundary conditions in which only TE modes of oscillation in the patch antenna cavity result. According to different propagation directions relative to the applied dc field these TE modes are distinguished as transverse modes and longitudinal modes, and they possess mutually perpendicular radiation polarizations. While the longitudinal TE modes are found to form discrete modes in the frequency domain, the radiation frequency of a transverse TE mode can be continuously tuned over a wide frequency range by varying the biasing magnetic field. Circularly polarized radiations may result from simultaneous excitations of these two modes. Ferrite patch antennas of square geometry have been fabricated and tested. The measured resonant frequencies compared very well with our theory.

引用

页码：988 / 994

页数：7

共 12 条

[1] THEORETICAL INVESTIGATION OF RECTANGULAR MICROSTRIP ANTENNA ELEMENT [J].

DERNERYD, AG .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1978, 26 (04) :532-535

[2]

HOW H, IN PRESS FERRITE DIS

[3]

Lax B., 1962, MICROWAVE FERRITES F

[4] THEORY AND EXPERIMENT ON MICROSTRIP ANTENNAS [J].

LO, YT ;

SOLOMON, D ;

RICHARDS, WF .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1979, 27 (02) :137-145

[5] EXPERIMENTAL-STUDY OF ELECTRONIC SCANNING BY AN ANTENNA LOADED WITH A CIRCULAR ARRAY OF FERRITE RODS [J].

OKAMOTO, N ;

IKEDA, S .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1979, 27 (03) :426-429

[6]

POLDER D, 1949, PHILOS MAG, V40, P99

[7] MAGNETIC TUNING OF A MICROSTRIP ANTENNA ON A FERRITE SUBSTRATE [J].

POZAR, DM ;

SANCHEZ, V .

ELECTRONICS LETTERS, 1988, 24 (12) :729-731

[8] RADIATION AND SCATTERING CHARACTERISTICS OF MICROSTRIP ANTENNAS ON NORMALLY BIASED FERRITE SUBSTRATES [J].

POZAR, DM .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1992, 40 (09) :1084-1092

[9]

Rainville P. J., 1992, IEEE Microwave and Guided Wave Letters, V2, P483, DOI 10.1109/75.173402

[10]

SHEN LC, 1981, IEEE T ANTENN PROPAG, V29, P90, DOI 10.1109/TAP.1981.1142545

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