Development of a 30 GHz, Wireless Lan Transmit/Receive Module

Development of a transmit/receive module operating at 30 GHz is described. This module is intended for use in a broadband wireless, local area network (WLAN) demonstrator system and consists of monolithic microwave integrated circuits (MMICs) and miniature hybrid microwave integrated circuits (MHMICs) assembled together in a single housing together with four planar, leaky wave antenna elements. The antenna array is used in a switching mode, with an MMIC switching network, to direct the transmit or receive signals appropriately. The demonstrator module has a 90° coverage in the horizontal plane and can he extended to provide full 360° coverage, by grouping four such modules together.