Dual-band microstrip-to-coplanar strip balun transition and loop antenna application

A microstrip-to-coplanar strip balun transition and its applicability to a single-fed dual-band tapered loop antenna are presented. The dual-band transition consists of a simple two-section transmission-line transformer and a two-section open-ended line. Closed-form design equations based on ideal transmission lines are derived and then verified with the examples of two designs. The application of the transition to a single-fed 0.9/1.8 GHz dual-band tapered loop antenna is then demonstrated. The measured performance of the antenna proves the validity of the proposed dual-band transition network.

[1]  Shau-Gang Mao,et al.  Broadband composite right/left-handed coplanar waveguide power splitters with arbitrary phase responses and balun and antenna applications , 2006 .

[2]  C. Monzon.  A small dual-frequency transformer in two sections , 2003 .

[3]  Yu-De Lin,et al.  Coplanar waveguide-fed uniplanar bow-tie antenna , 1997 .

[4]  M. Chongcheawchamnan,et al.  Design 2.4/5.8 GHz Microstrip-to-Coplanar Strip Transition , 2007, 2007 Asia-Pacific Microwave Conference.

[5]  K. A. Tilley,et al.  Dual frequency coplanar strip dipole antenna , 1994, Proceedings of IEEE Antennas and Propagation Society International Symposium and URSI National Radio Science Meeting.

[6]  F.R.L. de Silva,et al.  Coplanar Antenna Array for 2.45GHz RFID Tag , 2006 .

[7]  Kai Chang,et al.  Coplanar stripline resonators modeling and applications to filters , 2002 .

[8]  Kai Chang,et al.  Wide-band microstrip-to-coplanar stripline/slotline transitions , 2006 .

[9]  Young-Ki Cho,et al.  A New Ultra-wideband Microstrip-to-CPS Transition , 2007, 2007 IEEE/MTT-S International Microwave Symposium.

[10]  T. C. Edwards,et al.  Foundations for microstrip circuit design , 1981 .

[11]  Kai Chang,et al.  Microstrip Elliptic-Function Low-Pass Filters Using Distributed Elements or Slotted Ground Structure , 2006, IEEE Transactions on Microwave Theory and Techniques.

[12]  Kai Chang,et al.  A high-efficiency dual-frequency rectenna for 2.45- and 5.8-GHz wireless power transmission , 2002 .

[13]  L. Katehi,et al.  New uniplanar transitions for circuit and antenna applications , 1995 .

[14]  L. Katehi,et al.  Coplanar stripline to microstrip transition , 1995 .

[15]  Kai Chang,et al.  Microstrip fed coplanar stripline tee junction using coupled coplanar stripline , 2001, 2001 IEEE MTT-S International Microwave Sympsoium Digest (Cat. No.01CH37157).

[16]  I.D. Robertson,et al.  1 to 20 GHz CMOS distributed mixer using asymmetric coplanar strip transmission lines , 2006, IEEE Radio Frequency Integrated Circuits (RFIC) Symposium, 2006.

[17]  T. Itoh,et al.  A broadband uniplanar quasi-Yagi active array for power combining , 1999, RAWCON 99. 1999 IEEE Radio and Wireless Conference (Cat. No.99EX292).

[18]  T. Chiu,et al.  A broadband transition between microstrip and coplanar stripline , 2003 .

[19]  Yongxi Qian,et al.  A broadband uniplanar microstrip-to-CPS transition , 1997, Proceedings of 1997 Asia-Pacific Microwave Conference.

[20]  R. Waterhouse,et al.  A broadband planar quasi-Yagi antenna , 2002 .