{"first_publish_date": "April 28, 1989", "title": "Microwave Passive and Antenna Components, Volume 1, Handbook of Microwave and Optical Components", "created": {"type": "/type/datetime", "value": "2009-12-10T01:14:25.667683"}, "covers": [4642384], "first_sentence": {"type": "/type/text", "value": "Transmission lines in microwave and millimeter wave circuits are normally used to carry information or energy from one point to the other and as circuit elements for passive circuits such as filters, impedance transformers, couplers, delay lines, and baluns."}, "last_modified": {"type": "/type/datetime", "value": "2010-04-28T08:24:50.868052"}, "latest_revision": 3, "key": "/works/OL2959627W", "authors": [{"type": "/type/author_role", "author": {"key": "/authors/OL452014A"}}], "excerpts": [{"excerpt": {"type": "/type/text", "value": "Transmission lines in microwave and millimeter wave circuits are normally used to carry information or energy from one point to the other and as circuit elements for passive circuits such as filters, impedance transformers, couplers, delay lines, and baluns."}, "page": "First sentence"}], "type": {"key": "/type/work"}, "id": 38136432, "revision": 3}