{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2025:44G4F73WLJCPUWJKE4MWE3Z64E","short_pith_number":"pith:44G4F73W","schema_version":"1.0","canonical_sha256":"e70dc2ff765a44fa592a2719626f3ee10376028e018796c1f3605be77fbf6c1e","source":{"kind":"arxiv","id":"2504.13523","version":2},"attestation_state":"computed","paper":{"title":"Beyond-Diagonal Dynamic Metasurface Antenna","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"physics.app-ph","authors_text":"Hugo Prod'Homme, Philipp del Hougne","submitted_at":"2025-04-18T07:23:13Z","abstract_excerpt":"Dynamic metasurface antennas (DMAs) are an emerging technology for next-generation wireless base stations, distinguished by hybrid analog/digital beamforming capabilities with low hardware complexity. However, the intrinsic coupling between meta-atoms is fixed by static waveguide or cavity structures in existing DMAs, which fundamentally constrains the achievable performance. Here, we introduce reconfigurable intrinsic coupling mechanisms between meta-atoms, yielding finer control over the DMA's analog signal processing capabilities. This novel hardware is coined \"beyond-diagonal DMA\" (BD-DMA)"},"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":"2504.13523","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.app-ph","submitted_at":"2025-04-18T07:23:13Z","cross_cats_sorted":["eess.SP"],"title_canon_sha256":"00300d25132b7e81e3d4e1d052d78d7abae0f91f6f61394bcb130a0ba2c2cbba","abstract_canon_sha256":"8a843bee447f7f380fb7b358585e793b3125a0317e0a9f8af451494797d788c4"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T11:34:50.138740Z","signature_b64":"+aPBGc1YbkL9b9SZjwuxEFj1mK1KvmHERH/HeCQa5rL0//8g4aLETUs3A20Jmgc5OOEt5+4ltKymC/def8E8Bg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e70dc2ff765a44fa592a2719626f3ee10376028e018796c1f3605be77fbf6c1e","last_reissued_at":"2026-07-05T11:34:50.138226Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T11:34:50.138226Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Beyond-Diagonal Dynamic Metasurface Antenna","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["eess.SP"],"primary_cat":"physics.app-ph","authors_text":"Hugo Prod'Homme, Philipp del Hougne","submitted_at":"2025-04-18T07:23:13Z","abstract_excerpt":"Dynamic metasurface antennas (DMAs) are an emerging technology for next-generation wireless base stations, distinguished by hybrid analog/digital beamforming capabilities with low hardware complexity. However, the intrinsic coupling between meta-atoms is fixed by static waveguide or cavity structures in existing DMAs, which fundamentally constrains the achievable performance. Here, we introduce reconfigurable intrinsic coupling mechanisms between meta-atoms, yielding finer control over the DMA's analog signal processing capabilities. This novel hardware is coined \"beyond-diagonal DMA\" (BD-DMA)"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2504.13523","kind":"arxiv","version":2},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2504.13523/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2504.13523","created_at":"2026-07-05T11:34:50.138288+00:00"},{"alias_kind":"arxiv_version","alias_value":"2504.13523v2","created_at":"2026-07-05T11:34:50.138288+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2504.13523","created_at":"2026-07-05T11:34:50.138288+00:00"},{"alias_kind":"pith_short_12","alias_value":"44G4F73WLJCP","created_at":"2026-07-05T11:34:50.138288+00:00"},{"alias_kind":"pith_short_16","alias_value":"44G4F73WLJCPUWJK","created_at":"2026-07-05T11:34:50.138288+00:00"},{"alias_kind":"pith_short_8","alias_value":"44G4F73W","created_at":"2026-07-05T11:34:50.138288+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":0,"sample":[{"citing_arxiv_id":"2506.15052","citing_title":"MIMO Systems Aided by Microwave Linear Analog Computers: Capacity-Achieving Architectures with Reduced Circuit Complexity","ref_index":17,"is_internal_anchor":false}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E","json":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E.json","graph_json":"https://pith.science/api/pith-number/44G4F73WLJCPUWJKE4MWE3Z64E/graph.json","events_json":"https://pith.science/api/pith-number/44G4F73WLJCPUWJKE4MWE3Z64E/events.json","paper":"https://pith.science/paper/44G4F73W"},"agent_actions":{"view_html":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E","download_json":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E.json","view_paper":"https://pith.science/paper/44G4F73W","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=2504.13523&json=true","fetch_graph":"https://pith.science/api/pith-number/44G4F73WLJCPUWJKE4MWE3Z64E/graph.json","fetch_events":"https://pith.science/api/pith-number/44G4F73WLJCPUWJKE4MWE3Z64E/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E/action/timestamp_anchor","attest_storage":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E/action/storage_attestation","attest_author":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E/action/author_attestation","sign_citation":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E/action/citation_signature","submit_replication":"https://pith.science/pith/44G4F73WLJCPUWJKE4MWE3Z64E/action/replication_record"}},"created_at":"2026-07-05T11:34:50.138288+00:00","updated_at":"2026-07-05T11:34:50.138288+00:00"}