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SEGMENTS AND GEOGRAPHIC INFORMATION
12 Months Ended
Dec. 31, 2021
Segment Reporting [Abstract]  
SEGMENTS AND GEOGRAPHIC INFORMATION SEGMENTS AND GEOGRAPHIC INFORMATION
We operate in a single segment to design radio frequency filters. In making operating decisions, the Chief Operating Decision Maker, our Chief Executive Officer, primarily considers consolidated financial performance and allocates resources accordingly.

The table below presents our revenue by geographic area (in thousands) and is categorized based on the location of the customer.
20212020
Japan$1,598 $2,716 
China289 406 
Other291 38 
     Total revenue$2,178 $3,160