Pith Number

pith:YS6T5JOV

pith:2026:YS6T5JOVCTWIPDY54ISQXCCHM4

not attested not anchored not stored refs resolved

Q-Enhanced SH-SAW Ladder Filter in Thin-Film Lithium Tantalate Using Bartlett Apodization

Ruochen Lu, Taran Anusorn, Tzu-Hsuan Hsu, Yuchen Ma

Bartlett apodization in SH-SAW resonators on thin-film LiTaO3 raises Q from 688 to 1522

arxiv:2605.16586 v1 · 2026-05-15 · eess.SP

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Claims

C1strongest claim

implementing a Bartlett window apodization technique, primarily intended for in-band spurious-mode suppression, yields a significantly improved quality factor (Q) of 1,522 from 688 in conventional interdigitated SH-SAW resonators.

C2weakest assumption

The measured Q improvement is due to the apodization suppressing spurious modes rather than other unaccounted fabrication variations or measurement setup differences between the apodized and conventional devices.

C3one line summary

Bartlett-apodized SH-SAW resonators in 42°Y-cut LiTaO3 on SiO2/Si reach Q of 1522 at 4.35 GHz, enabling a compact ladder filter with 1.59 dB loss and 3.24% FBW.

References

23 extracted · 23 resolved · 0 Pith anchors

[1] Microwave acoustic devices: Recent advances and outlook, 2021

[2] From microwave acoustic filters to millimeter-wave operation and new applications, 2023

[3] Scaling surface acoustic wave filters on LNOI platform for 5G communication, 2022

[4] Double busbar structure for transverse energy leakage and resonance suppression in surface acoustic wave resonators using 42° YX -lithium tantalate thin plate, 2022

[5] Surface-acoustic-wave devices based on lithium niobate and amorphous silicon thin films on a silicon substrate, 2022

Receipt and verification

First computed	2026-05-20T00:02:31.270581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c4bd3ea5d514ec878f1de2250b884767277f468468f66112a057a93f39294fa0

Aliases

arxiv: 2605.16586 · arxiv_version: 2605.16586v1 · doi: 10.48550/arxiv.2605.16586 · pith_short_12: YS6T5JOVCTWI · pith_short_16: YS6T5JOVCTWIPDY5 · pith_short_8: YS6T5JOV

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Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/YS6T5JOVCTWIPDY54ISQXCCHM4 \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: c4bd3ea5d514ec878f1de2250b884767277f468468f66112a057a93f39294fa0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "10aa15c9640b3185f71bd6581ed7d62c819685b11c06641b01e3ee9452ef7dda",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2026-05-15T19:43:41Z",
    "title_canon_sha256": "e61178f971a5c852d98c04d7660ccb00afff62d1f92bc768d0aa1c0f11b187c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.16586",
    "kind": "arxiv",
    "version": 1
  }
}