Design of a CPW-Fed Band-Notched UWB Antenna Using a Feeder-Embedded Slotline Resonator

A complete design method for a compact uniplanar ultra-wideband antenna with subband rejection capability is presented. A slotline resonator is incorporated in the coplanar waveguide feeder of the antenna to act as a bandstop filter, hence enabling the rejection of any undesired band within the passband of the antenna. Two samples of the proposed antenna were designed and manufactured. One of the developed antennas does not contain a resonator, whereas the other contains a slotline resonator. The designed antennas feature a compact size of 27 mm 27 mm. Results of the simulation and measurement show that the designed antennas have a bandwidth from 3 GHz to more than 11 GHz. The results also reveal that the use of the resonator in the feeder of the antenna efficiently rejects any undesired subband, such as the 4.9–5.9 GHz band assigned for IEEE802.11a and HIPERLAN/2. The gain of the antennas with the resonator is about 2.2 dBi at the passband, while it is less than −8 dBi at the rejected subband.

[1]  Hao Ling,et al.  Design of a Band-Notched Planar Monopole Antenna Using Genetic Algorithm Optimization , 2007, IEEE Transactions on Antennas and Propagation.

[2]  D. Pozar Microwave Engineering , 1990 .

[3]  Seong-Ook Park,et al.  A miniature UWB planar monopole antenna with 5-GHz band-rejection filter and the time-domain characteristics , 2006, IEEE Transactions on Antennas and Propagation.

[4]  Yuan Gao,et al.  Band-notched ultra-wideband ring-monopole antenna , 2006 .

[5]  K. Gupta,et al.  Microstrip Lines and Slotlines , 1979 .

[6]  H. Ling,et al.  Design of a planar monopole antenna for use with ultra-wideband (UWB) having a band-notched characteristic , 2003, IEEE Antennas and Propagation Society International Symposium. Digest. Held in conjunction with: USNC/CNC/URSI North American Radio Sci. Meeting (Cat. No.03CH37450).

[7]  H. Schantz,et al.  Frequency notched UWB antennas , 2003, IEEE Conference on Ultra Wideband Systems and Technologies, 2003.

[9]  W. Stutzman,et al.  A UWB antenna with a stop-band notch in the 5-GHz WLAN band , 2005, IEEE/ACES International Conference on Wireless Communications and Applied Computational Electromagnetics, 2005..

[10]  Chih-Yu Huang,et al.  Planar ultra‐wideband antenna with a frequency notch characteristic , 2007 .

[11]  Hong-Bo Zhu,et al.  Frequency notched printed slot antenna with parasitic open-circuit stub , 2005 .

[12]  J. Mazierska,et al.  A planar UWB antenna with signal rejection capability in the 4-6 GHz band , 2006, IEEE Microwave and Wireless Components Letters.

[13]  Seong‐Ook Park,et al.  Band-notched UWB planar monopole antenna with two parasitic patches , 2005 .