A high precision embedded combline filter implementation in silicon IPD wafers for X band

Eilert, Kim; Shin, Ki R.

doi:10.1109/wamicon.2018.8363896

Cited by 4 publications

(2 citation statements)

References 10 publications

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“…Combline filters are common types of transmission line filters. Various structures have been presented to design combline BPFs, including stripline, 2 microstrip, 3,4 and waveguide 5,6 filters. A large number of articles were devoted to the low‐frequency band, such as L, S, X bands.…”

Section: Introductionmentioning

confidence: 99%

“…In Roddick et al, 7 a third‐order tunable microstrip combline filter was designed from 1.05 to 2 GHz. By means of a pair of quarter‐wavelength ( λ /4) resonators, a 3.47 GHz combline BPF with two finite transmission zeros (TZs) was proposed in Yu et al 3 A microstrip combline filter implementation using silicon fabrication technology was described in Eilert et al, 4 which achieved the insertion loss (IL) of 3.6 dB at 9 GHz.…”

Section: Introductionmentioning

confidence: 99%

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FR‐4‐based Ka‐band SISL bandpass filters using folded half‐wavelength resonators

Yue

Wang

2022

Micro & Optical Tech Letters

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In this letter, bandpass filters (BPFs) with folded short‐circuited half‐wavelength (λ/2) resonators are proposed based on the substrate integrated suspended line (SISL) platform for satellite communications. Each λ/2 resonator is folded, to achieve an overlapping structure, which not only reduces the size, but more importantly, reduces the loss. In addition, air cavity, metal shielding wall, and substrate excavation method also dramatically reduce the loss in substrates. Note that professional material term (FR‐4) material is chosen for the design, therefore, it is low‐cost and more suitable for production application. Finally, a second‐order and a fourth‐order combline BPFs are fabricated and measured to verify the design method. The insertion loss of the second‐order and the fourth‐order filters are only 0.78 and 1.19 dB at the center frequency of 29.2 GHz, respectively. The presented SISL filters using FR‐4 material demonstrate the advantages of low‐loss, low‐cost, and self‐packaging.

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Section: Introductionmentioning

confidence: 99%