A spiral-shaped defected ground structure for coplanar waveguide

被引:108
作者
Lim, JS [1 ]
Kim, CS
Lee, YT
Ahn, D
Nam, S
机构
[1] Seoul Natl Univ, Appl Electromagnet Lab, Inst New Media & Commun, Seoul, South Korea
[2] Seoul Natl Univ, Sch Elect Engn & Comp Sci, Seoul, South Korea
[3] Elect & Telecommun Res Inst, Basic Res Lab, Taejon 305606, South Korea
[4] SoonChunHyang Univ, Div Informat Technol Engn, Chungnam, South Korea
关键词
CPW; DGS; DGSCPW; spiral;
D O I
10.1109/LMWC.2002.803208
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
This letter presents a spiral-shaped defected ground structure for coplanar waveguides (DGSCPW), which can be used as a kind of periodic structure for planar transmission line. The proposed spiral-DGSCPW adopts spiral-shaped defects on both ground planes of CPW. Due to the spiral-shaped defects, the equivalent shunt inductance and slow-wave effects increase more rapidly than the standard CPW or CPW lines combined with the conventional PBG. The modeling and analysis to extract the equivalent circuit, increased slow-wave factor, and simulated and measured performances are presented.
引用
收藏
页码:330 / 332
页数:3
相关论文
共 11 条
[1]   A design of the low-pass filter using the novel microstrip defected ground structure [J].
Ahn, D ;
Park, JS ;
Kim, CS ;
Kim, J ;
Qian, YX ;
Itoh, T .
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2001, 49 (01) :86-93
[2]   Slotline to coplanar waveguide band-stop filter modelling [J].
Fusco, VF ;
Chen, Q .
2000 TOPICAL MEETING ON SILICON MONOLITHIC INTEGRATED CIRCUITS IN RF SYSTEMS, DIGEST OF PAPERS, 2000, :125-130
[3]  
HETTAK K, 1998, IEEE MTT S, P809
[4]   A novel 1-D periodic defected ground structure for planar circuits [J].
Kim, CS ;
Park, JS ;
Ahn, D ;
Lim, JB .
IEEE MICROWAVE AND GUIDED WAVE LETTERS, 2000, 10 (04) :131-133
[5]   Design of 10dB 90° branch line coupler using microstrip line with defected ground structure [J].
Lim, JS ;
Kim, CS ;
Park, JS ;
Ahn, D ;
Nam, S .
ELECTRONICS LETTERS, 2000, 36 (21) :1784-1785
[6]   Application of defected ground structure in reducing the size of amplifiers [J].
Lim, JS ;
Park, JS ;
Lee, YT ;
Ahn, D ;
Nam, S .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2002, 12 (07) :261-263
[7]   A 4:1 unequal Wilkinson power divider [J].
Lim, JS ;
Lee, SW ;
Kim, CS ;
Park, JS ;
Ahn, D ;
Nam, S .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2001, 11 (03) :124-126
[8]   A novel periodic electromagnetic bandgap structure for finite-width conductor-backed coplanar waveguides [J].
Mao, SG ;
Chen, MY .
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, 2001, 11 (06) :261-263
[9]   Novel 2-D photonic bandgap structure for microstrip lines [J].
Radisic, V ;
Qian, YX ;
Coccioli, R ;
Itoh, T .
IEEE MICROWAVE AND GUIDED WAVE LETTERS, 1998, 8 (02) :69-71
[10]  
Yang FR, 1999, IEEE T MICROW THEORY, V47, P1509