Patent ID: 7557579

Claim:
A logging while drilling tool, comprising: a tool body configured to couple into a drill string, the tool body having a longitudinal tool axis; a first transmitter antenna extending circumferentially in a first cutout around the tool body, the first transmitter antenna configured to transmit an electromagnetic wave into an earth formation surrounding a borehole when the tool is used in a logging while drilling operation; a first receiver antenna extending circumferentially in a second cutout around the tool body, the first receiver antenna configured to receive an electromagnetic signal from the formation that is a result of the electromagnetic wave from the transmitter antenna, wherein at least one of the first transmitter antenna and the first receiver antenna extends in a plane that is orthogonal to said tool axis, and wherein at least one of the first transmitter antenna and the first receiver antenna extends in a plane that is not orthogonal to said tool axis; and processing circuitry operably coupled to receive a first input signal resulting from receipt of said electromagnetic signal at the first receiver antenna, the processing circuitry configured to determine at least one formation property in response to said input signal.