DESIGN OF SHORT HIGH-POWER TE11-HE11 MODE CONVERTERS IN HIGHLY OVERMODED CORRUGATED WAVE-GUIDES

被引：49

作者：

THUMM, M ^{[1
]}

JACOBS, A ^{[1
]}

AYZA, MS ^{[1
]}

机构：

[1] UNIV STUTTGART,INST PLASMAFORSCH,W-7000 STUTTGART 80,GERMANY

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1991年 / 39卷 / 02期

关键词：

D O I：

10.1109/22.102974

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：

A theoretical parametric study of TE11 to HE11 mode conversion in highly oversized, circumferentially corrugated circular waveguides with different inner diameters is presented for various frequencies in the range of 28 to 140 GHz. The depth of the annular slots is tapered gradually from one half to one quarter wavelength. Computer-aided optimization of converter length, shape of corrugations, and nonlinear slot depth variation has been achieved with a scattering matrix code employing the modal field matching techniques (modular analysis concept). Relatively short mode transducers with matched converter lengths of L almost-equal-to pi/DELTA-beta-[TE11-TM11] are feasible. In all cases the HE11 output mode purity is 99% to 99.5%. The maximum cross-polarization and input-reflection levels are below - 29 dB and -50 dB, respectively. Experimental results at 70 GHz (I.D. = 27.79 mm) are in excellent agreement with the theoretically predicted performance.

引用

页码：301 / 309

页数：9

共 17 条

[1]

Clarricoats P. J. B., 1984, Corrugated horns for microwave antennas

[2] MODE CONVERTERS FOR GENERATING THE HE-11 (GAUSSIAN-LIKE) MODE FROM TE 01 IN A CIRCULAR WAVEGUIDE [J].

DOANE, JL .

INTERNATIONAL JOURNAL OF ELECTRONICS, 1982, 53 (06) :573-585

[3] ATTENUATION AND RADIATION CHARACTERISTICS OF THE HE11-MODE [J].

DRAGONE, C .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1980, 28 (07) :704-710

[4] REFLECTION, TRANSMISSION, AND MODE CONVERSION IN A CORRUGATED FEED [J].

DRAGONE, C .

BELL SYSTEM TECHNICAL JOURNAL, 1977, 56 (06) :835-867

[5] CHARACTERISTICS OF A BROAD-BAND MICROWAVE CORRUGATED FEED - COMPARISON BETWEEN THEORY AND EXPERIMENT [J].

DRAGONE, C .

BELL SYSTEM TECHNICAL JOURNAL, 1977, 56 (06) :869-888

[6] TE11-TO-HE11 MODE CONVERTERS FOR SMALL-ANGLE CORRUGATED HORNS [J].

JAMES, GL .

IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1982, 30 (06) :1057-1062

[7] ANALYSIS AND DESIGN OF TE11-TO-HE11 CORRUGATED CYLINDRICAL WAVEGUIDE MODE CONVERTERS [J].

JAMES, GL .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1981, 29 (10) :1059-1066

[8] THE WAVENUMBER SPECTROMETER - AN ALTERNATIVE TO THE DIRECTIONAL COUPLER FOR MULTIMODE ANALYSIS IN OVERSIZED WAVE-GUIDES [J].

KASPAREK, W ;

MULLER, GA .

INTERNATIONAL JOURNAL OF ELECTRONICS, 1988, 64 (01) :5-20

[9]

KERZHENTSEVA NP, 1971, RADIO ENG ELECTRON P, V16, P24

[10]

Kuhn E., 1983, Third International Conference on Antennas and Propagation ICAP 83, P127

← 1 2 →