Abstract:This article describes a 0.34 THz Wireless Local Area Network(WLAN) demonstration system, which consists of a 0.34 THz wireless communication transceiver front end based on solid-state semiconductor, and WLAN equipments based on 802.11 protocol. The 0.34 THz transceiver front end employs double frequency and mixing technologies based on Schottky diode, and THz passive device based on precision machining. It consists of a 0.34 THz filter, a 0.34 THz sub-harmonic mixer, a 0.17 THz LO multiplier chain and feed bias circuit. Experimental result shows that 0.34 THz WLAN system comprised by three nodes can form a network communication at distance of 1.15 m, with a speed above 800 KB/s.