The US wireless ISP Clearwire says it has completed the first phase of its field trials of 802.16e mobile WiMAX technology. The trials, which covered a 15 square mile area in the suburbs of Portland in Oregon, were carried out in conjunction with Intel and Motorola. The firms will now expand the tests, with the second phase covering 145 square miles. Clearwire is currently using its 2.5GHz spectrum to provide pre-WiMAX wireless broadband services in more than 30 US markets. It expects to upgrade its networks and launch its first mobile WiMAX services next year. More information on WiMAX deployments can be found in TeleGeography’s WiMAX Market Tracking Service.