A series-fed microstrip patch array with interconnecting CRLH transmission lines for WLAN applications

In this paper, a design of a series-fed microstrip array with composite right-/left-handed transmission lines (CRLH-TLs) is being proposed. To ensure that each element in the array is driven with the same voltage phase, dual-band CRLH-TLs are adopted instead of meander-line microstrip lines to provide a compact interconnect with a zero phase-constant at the frequency of operation. The simulation results of the proposed array are verified by measurements done in an anechoic chamber. A bandwidth of 24 MHz was experimentally determined with a center frequency of 2.45 GHz. The proposed array would be useful for 2.45 GHz WLAN applications.