Broadband and compact impedance transformers for microwave circuits

被引：23

作者：

Bahl, Inder J. ^{[1
]}

机构：

[1] Tyco Elect Co, Integrated Prod Business Unit, MA COM, Roanoke, VA 24019 USA

来源：

IEEE MICROWAVE MAGAZINE | 2006年 / 7卷 / 04期

关键词：

Broadband networks - Electric impedance - Electric transformers - Fabrication - Multilayers - Natural frequencies - Transmission line theory;

D O I：

10.1109/MMW.2006.1663990

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：

The introduction of unconventional matching techniques, such as a transmission line transformer (TLT) using straight or coiled sections of coupled transmission lines, to realize multi-octave impedance transformation at RF and low microwave frequencies, was investigated. The TLT transformer design employed multilayer fabrication technology, such as a printed circuit board, low temperature cofired ceramic (LTCC), high temperature cofired ceramic (HTCC), and monolithic silicon or galium arsenide ICs. The four microstrip 50 to 12.5 Ω transformer configurations which were used in simulation includes single section, uncoupled lines TLT, side coupled lines TLT and asymmetric broadside coupled lines TLT. The effect of polymide thickness on TLT bandwidth was studied by varying its value and keeping other parameters. The TLT transformers were tested as a function of input power using high power sources, which includes the assembling of several chips on gold plated Elkonite crystals.

引用

页码：56 / +

页数：5

共 12 条

[1]

Abrie P. L., 1999, DESIGN RF MICROWAVE

[2]

ANG KS, 2004, MTT S INT MICR S DIG, P1951

[3]

[Anonymous], 2001, WILEY MICRO

[4]

Ashman M, 2004, MICROWAVE J, V47, P74

[5]

Bahl I, 2003, ARTECH MICR

[6] Average power handling capability of multilayer microstrip lines [J].

Bahl, IJ .

INTERNATIONAL JOURNAL OF RF AND MICROWAVE COMPUTER-AIDED ENGINEERING, 2001, 11 (06) :385-395

[7]

ENGELS M, 1995, IEEE MTT-S, P1635, DOI 10.1109/MWSYM.1995.406290

[8]

Horn J., 2004, 2004 IEEE MTT-S International Microwave Symposium Digest (IEEE Cat. No.04CH37535), P201, DOI 10.1109/MWSYM.2004.1335844

[9]

MONGIA R, 1999, RF MICROWAVE COUPLED, pCH10

[10] TRANSMISSION-LINE TRANSFORMERS [J].

ROTHOLZ, E .

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 1981, 29 (04) :327-331

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