{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:QUN5HJ4R3WC5TP7H6NW4HF2244","short_pith_number":"pith:QUN5HJ4R","schema_version":"1.0","canonical_sha256":"851bd3a791dd85d9bfe7f36dc3975ae704b7d1740b7cb175ecc865e9799fbca1","source":{"kind":"arxiv","id":"1906.03034","version":1},"attestation_state":"computed","paper":{"title":"Reconfigurable Electromagnetic Structures: X-Band and Beyond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Joshua M. Kovitz, Kenneth W. Allen","submitted_at":"2019-03-02T14:28:46Z","abstract_excerpt":"Developing reconfigurable millimeter-wave (mmWave) antennas and devices is an outstanding challenge, with switch technologies being a primary impediment. Recently, it has been shown that vanadium dioxide (VO2), a thermochromic material whose resistance changes with temperature, could provide a path forward in developing reconfigurable mmWave devices. As an initial step towards this vision, we investigate the integration of VO2 switches in reconfigurable components at 15 GHz. In particular, a frequency reconfigurable antenna and a reconfigurable phase shifter are shown. The low loss and minimal"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1906.03034","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2019-03-02T14:28:46Z","cross_cats_sorted":[],"title_canon_sha256":"405e18b7292829997f8b9f1bde007861e8b0eb462ee5f4ce666dd876b236bd62","abstract_canon_sha256":"ddbd65f77bb7cadbc7cc1eee7318f2d6f33aebbc4d9b1aa2157184f01203adae"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:43:55.259628Z","signature_b64":"5DOLkYA8gcz5KwU8Yk2yZ+f2+vycJQKF+WtOixg8VkDw7pQXgWvMMCzutbuncfFs8odEUgRhkfVBJjFjO+/rDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"851bd3a791dd85d9bfe7f36dc3975ae704b7d1740b7cb175ecc865e9799fbca1","last_reissued_at":"2026-05-17T23:43:55.259092Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:43:55.259092Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Reconfigurable Electromagnetic Structures: X-Band and Beyond","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.app-ph","authors_text":"Joshua M. Kovitz, Kenneth W. Allen","submitted_at":"2019-03-02T14:28:46Z","abstract_excerpt":"Developing reconfigurable millimeter-wave (mmWave) antennas and devices is an outstanding challenge, with switch technologies being a primary impediment. Recently, it has been shown that vanadium dioxide (VO2), a thermochromic material whose resistance changes with temperature, could provide a path forward in developing reconfigurable mmWave devices. As an initial step towards this vision, we investigate the integration of VO2 switches in reconfigurable components at 15 GHz. In particular, a frequency reconfigurable antenna and a reconfigurable phase shifter are shown. The low loss and minimal"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1906.03034","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"},"aliases":[{"alias_kind":"arxiv","alias_value":"1906.03034","created_at":"2026-05-17T23:43:55.259175+00:00"},{"alias_kind":"arxiv_version","alias_value":"1906.03034v1","created_at":"2026-05-17T23:43:55.259175+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1906.03034","created_at":"2026-05-17T23:43:55.259175+00:00"},{"alias_kind":"pith_short_12","alias_value":"QUN5HJ4R3WC5","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_16","alias_value":"QUN5HJ4R3WC5TP7H","created_at":"2026-05-18T12:33:27.125529+00:00"},{"alias_kind":"pith_short_8","alias_value":"QUN5HJ4R","created_at":"2026-05-18T12:33:27.125529+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244","json":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244.json","graph_json":"https://pith.science/api/pith-number/QUN5HJ4R3WC5TP7H6NW4HF2244/graph.json","events_json":"https://pith.science/api/pith-number/QUN5HJ4R3WC5TP7H6NW4HF2244/events.json","paper":"https://pith.science/paper/QUN5HJ4R"},"agent_actions":{"view_html":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244","download_json":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244.json","view_paper":"https://pith.science/paper/QUN5HJ4R","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1906.03034&json=true","fetch_graph":"https://pith.science/api/pith-number/QUN5HJ4R3WC5TP7H6NW4HF2244/graph.json","fetch_events":"https://pith.science/api/pith-number/QUN5HJ4R3WC5TP7H6NW4HF2244/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244/action/timestamp_anchor","attest_storage":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244/action/storage_attestation","attest_author":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244/action/author_attestation","sign_citation":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244/action/citation_signature","submit_replication":"https://pith.science/pith/QUN5HJ4R3WC5TP7H6NW4HF2244/action/replication_record"}},"created_at":"2026-05-17T23:43:55.259175+00:00","updated_at":"2026-05-17T23:43:55.259175+00:00"}