{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2016:7KP2HOXZJGEKJZ7O7OBCUIHNQM","short_pith_number":"pith:7KP2HOXZ","canonical_record":{"source":{"id":"1607.08175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2016-07-27T16:48:33Z","cross_cats_sorted":[],"title_canon_sha256":"c70564dd29e8261869abf3bd8451f7246afa54d591a9da165b5fe8b433228bf8","abstract_canon_sha256":"9c2111a9dcca53582fad37360753e2b071fd2d2071067100a6a629a6ce3b0d42"},"schema_version":"1.0"},"canonical_sha256":"fa9fa3baf94988a4e7eefb822a20ed83190d911a83e0fa6f5bf0fca7160396aa","source":{"kind":"arxiv","id":"1607.08175","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08175","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08175v1","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08175","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"7KP2HOXZJGEK","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7KP2HOXZJGEKJZ7O","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7KP2HOXZ","created_at":"2026-05-18T12:30:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2016:7KP2HOXZJGEKJZ7O7OBCUIHNQM","target":"record","payload":{"canonical_record":{"source":{"id":"1607.08175","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2016-07-27T16:48:33Z","cross_cats_sorted":[],"title_canon_sha256":"c70564dd29e8261869abf3bd8451f7246afa54d591a9da165b5fe8b433228bf8","abstract_canon_sha256":"9c2111a9dcca53582fad37360753e2b071fd2d2071067100a6a629a6ce3b0d42"},"schema_version":"1.0"},"canonical_sha256":"fa9fa3baf94988a4e7eefb822a20ed83190d911a83e0fa6f5bf0fca7160396aa","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T00:58:28.670812Z","signature_b64":"rkR7FHPdblWqNmKB2+R8WUfMexfp+6BxRuMRBf7zwsJXJxsWvWGVViVkNFsVzj5iI3r2womgPjVs1W5Y0k5VAw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"fa9fa3baf94988a4e7eefb822a20ed83190d911a83e0fa6f5bf0fca7160396aa","last_reissued_at":"2026-05-18T00:58:28.670168Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T00:58:28.670168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1607.08175","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"0vDuPzBE1MRWh486tDARiAaGn0OLtca5U8v3sZQ6t7fmkiaEPiMpJvTISriNLy+7/PCIpo3AvMkMOGXbjzJPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T12:15:27.905181Z"},"content_sha256":"b7002151ab97e18ef458db39c72cb26a20720f5c61ea4a1684ad6db857486d43","schema_version":"1.0","event_id":"sha256:b7002151ab97e18ef458db39c72cb26a20720f5c61ea4a1684ad6db857486d43"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2016:7KP2HOXZJGEKJZ7O7OBCUIHNQM","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Computational Investigation of Microstrip Antennas in Plasma Environment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"physics.plasm-ph","authors_text":"Bhaskar Chaudhury, Hardik Vyas, Sanjeev Gupta","submitted_at":"2016-07-27T16:48:33Z","abstract_excerpt":"Microstrip antennas are extensively used in spacecraft systems and other applications where they encounter a plasma environment. A detailed computational investigation of change in antenna radiation properties in the presence of plasma has been presented in this paper. The study shows antenna properties such as the resonant frequency, return loss, radiation properties and the different characteristics of the antenna changes when it is surrounded by plasma. Particular focus of the work is to understand the causes behind these changes by correlating the complex propagation constant in the plasma"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08175","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T00:58:28Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LUxnlc0U8eRGinXm/wx6azx33TZqUlmWf8fn3a7kpfhE+Y5FNGLgeQqrnYIOUfj7dOW5xouhKnZpkQn3v1FPCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-11T12:15:27.905597Z"},"content_sha256":"3335b3190bdd1dd3b1797ef88a91a787587ab0efa0a467bc4ab456a39e8621e7","schema_version":"1.0","event_id":"sha256:3335b3190bdd1dd3b1797ef88a91a787587ab0efa0a467bc4ab456a39e8621e7"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/bundle.json","state_url":"https://pith.science/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-06-11T12:15:27Z","links":{"resolver":"https://pith.science/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM","bundle":"https://pith.science/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/bundle.json","state":"https://pith.science/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/state.json","well_known_bundle":"https://pith.science/.well-known/pith/7KP2HOXZJGEKJZ7O7OBCUIHNQM/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2016:7KP2HOXZJGEKJZ7O7OBCUIHNQM","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"9c2111a9dcca53582fad37360753e2b071fd2d2071067100a6a629a6ce3b0d42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2016-07-27T16:48:33Z","title_canon_sha256":"c70564dd29e8261869abf3bd8451f7246afa54d591a9da165b5fe8b433228bf8"},"schema_version":"1.0","source":{"id":"1607.08175","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1607.08175","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"arxiv_version","alias_value":"1607.08175v1","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1607.08175","created_at":"2026-05-18T00:58:28Z"},{"alias_kind":"pith_short_12","alias_value":"7KP2HOXZJGEK","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_16","alias_value":"7KP2HOXZJGEKJZ7O","created_at":"2026-05-18T12:30:04Z"},{"alias_kind":"pith_short_8","alias_value":"7KP2HOXZ","created_at":"2026-05-18T12:30:04Z"}],"graph_snapshots":[{"event_id":"sha256:3335b3190bdd1dd3b1797ef88a91a787587ab0efa0a467bc4ab456a39e8621e7","target":"graph","created_at":"2026-05-18T00:58:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"paper":{"abstract_excerpt":"Microstrip antennas are extensively used in spacecraft systems and other applications where they encounter a plasma environment. A detailed computational investigation of change in antenna radiation properties in the presence of plasma has been presented in this paper. The study shows antenna properties such as the resonant frequency, return loss, radiation properties and the different characteristics of the antenna changes when it is surrounded by plasma. Particular focus of the work is to understand the causes behind these changes by correlating the complex propagation constant in the plasma","authors_text":"Bhaskar Chaudhury, Hardik Vyas, Sanjeev Gupta","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2016-07-27T16:48:33Z","title":"Computational Investigation of Microstrip Antennas in Plasma Environment"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1607.08175","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:b7002151ab97e18ef458db39c72cb26a20720f5c61ea4a1684ad6db857486d43","target":"record","created_at":"2026-05-18T00:58:28Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"9c2111a9dcca53582fad37360753e2b071fd2d2071067100a6a629a6ce3b0d42","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"physics.plasm-ph","submitted_at":"2016-07-27T16:48:33Z","title_canon_sha256":"c70564dd29e8261869abf3bd8451f7246afa54d591a9da165b5fe8b433228bf8"},"schema_version":"1.0","source":{"id":"1607.08175","kind":"arxiv","version":1}},"canonical_sha256":"fa9fa3baf94988a4e7eefb822a20ed83190d911a83e0fa6f5bf0fca7160396aa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"fa9fa3baf94988a4e7eefb822a20ed83190d911a83e0fa6f5bf0fca7160396aa","first_computed_at":"2026-05-18T00:58:28.670168Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:58:28.670168Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"rkR7FHPdblWqNmKB2+R8WUfMexfp+6BxRuMRBf7zwsJXJxsWvWGVViVkNFsVzj5iI3r2womgPjVs1W5Y0k5VAw==","signature_status":"signed_v1","signed_at":"2026-05-18T00:58:28.670812Z","signed_message":"canonical_sha256_bytes"},"source_id":"1607.08175","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b7002151ab97e18ef458db39c72cb26a20720f5c61ea4a1684ad6db857486d43","sha256:3335b3190bdd1dd3b1797ef88a91a787587ab0efa0a467bc4ab456a39e8621e7"],"state_sha256":"0535bca1bcb363a4384d4e01bff328ae789b5ef9591ff313187fa65fe3ffbf55"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"yX27/wo4QcXbWo5mQ/vsGN2feITBU/ft5CMGy7ctd5N98Wj3vFFfmikyFjpDd8PKYtNKynCJc5mt2aL1mAjNCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-11T12:15:27.907553Z","bundle_sha256":"a7d9c12df94b95c0c0fa9ff12ef5db896110401d33f707bd4ecdcb08f0a8cc9f"}}