Jihak Jung

A small wideband microstrip-fed monopole antenna

A small microstrip-fed monopole antenna, which consists of a rectangular patch and a truncated ground plane, is presented for ultra wideband application. The proposed antenna is designed to operate over 3.1 to 11GHz for S/sub 11/<-10dB. Good return loss and radiation pattern characteristics are obtained in the frequency band of interest.

A Compact Broadband Antenna with an L-Shaped Notch

A small microstrip-fed monopole antenna using an L-shaped notch is presented for ultra wideband applications. The proposed antenna, with compact size of 15.5 x 21 mm 2 including the ground plane, is designed to operate over the frequency band between 3.05 and 10.9 GHz for S 11 < -10 dB. Good return loss and radiation pattern characteristics are obtained in the frequency band of interest.

Compact wideband printed monopole antenna with frequency band-stop characteristic

A novel compact and wideband printed monopole antenna with frequency band-stop characteristic is presented. By embedding a notch in the ground plane, the ultrawideband property for the proposed antenna is achieved. To create a frequency bandstop characteristic, a simple /spl lambda//4 U-shape slot is inserted into the radiating patch. Numerical and experimental results show that the proposed antenna operates over 2.95 to 11.7 GHz for VSWR<2, while the band-stop characteristic is maintained in the frequency band of 4.92 to 5.86 GHz.