A Compact Configurable EBG Filter on PCB

Guo, Yu; Kim, Sungjun; Liu, Xiaozhou; Gao, Huai; Li, G.P.

doi:10.1109/tcpmt.2015.2423294

Cited by 20 publications

(23 citation statements)

References 14 publications

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“…Insertion loss and Qu of the tunable EBG filter depend not only on Q factor of the varactors and surface mounted lumped capacitors [17] but also RF loss caused by the DC bias lines. Simulated and measured s parameters of the tunable filter are shown in Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The measured minimum insertion losses in the passband ranges are 4:4 dB AE 0:2 dB. The loss is dominated by the Q of varactors and lumped capacitors [17]. Based on measurement results, effective Qu of the tunable filter is calculated by using equations (5-7) presented in [16], which results in an effective Qu of 88.…”

Section: Resultsmentioning

confidence: 99%

“…Rectangular slots are used instead of common slotlines to increase inductive reactance and corresponding magnetic energy stored at the end of the slots. Consequently, external energy coupling to the filter is enhanced leading to a lower insertion loss of the filter [17]. Moreover, broadband energy transition and coupling is achieved by utilizing rectangular open slots, which enable a constant insertion loss of the filter in its tuning range.…”

Section: Shown Inmentioning

confidence: 99%

“…EBG filters/resonators [8,9,10,11,12,13,14,15,16] have attracted a lot of attention due to its high Qu (Unloaded Quality Factor), ease of integration with other RF front end components and low cost. Most recently, a Compact Configurable EBG (CEBG) filter was demonstrated to function at specifically selected working frequency by simply adjusting an external capacitor by this group [17,18].…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

A compact customizable tunable EBG filter

Guo

Liu

et al. 2016

IEICE Electron. Express

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A novel design for compact customizable tunable EBG (Electromagnetic Bandgap) filter is proposed. The tunable filter is implemented in RO4350 substrate using PCB (Printed Circuit Board) process with surface mounted solid-state varactors and lumped capacitors. Its frequency is tuned by adjusting applied voltages of the varactors. The filter is unique that it is capable to be tuned in customizable specified frequency range by selecting the lumped capacitors. The simulated and measured results of the proposed filter are found to be in good agreement. It is demonstrated that a two-pole filter with size of 3.20 × 3.90 × 1.52 mm 3 in PCB achieving performance of a tuning range of 5.3-6.3 GHz with a 1-dB fractional bandwidth below 6.35% and a constant insertion loss of 4.4 dB ² 0.2 dB.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Shown Inmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A compact customizable tunable EBG filter

Guo

Liu

et al. 2016

IEICE Electron. Express

Self Cite

View full text Add to dashboard Cite

show abstract

“…EBG filter/resonator [6,7,8,9,10,11,12] has attracted a lot of attention in recent years due to its high Qu (Unloaded Quality Factor), ease of integration with other RF front end components and low cost. Most recently, a Compact Configurable EBG (CEBG) filter was demonstrated to function at specifically selected working frequency by simply adjusting an external capacitor by this group [10].…”

Section: Introductionmentioning

confidence: 99%

A compact triple-band bandpass filter with customizable frequencies

Guo

et al. 2016

IEICE Electron. Express

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A novel design of a customizable triple-band EBG (Electromagnetic Bandgap) bandpass filter is proposed. The EBG filter is manufactured by a conventional 2-layer PCB process in RO4350 substrate with surface mounted lumped capacitors. Specific working frequency of each band of the filter can be selected on demand by adjusting the value of corresponding capacitors, while the filter's performance and compact design is not compromised. The experimental results show a filter with size of 28.00 × 28.00 × 1.52 mm 3 in PCB achieving performance of insertion loss of 2.57 dB, 2.82 dB; return loss of 13.35 dB, 28.09 dB at two passbands with center frequencies of 2.33 GHz, 4.23 GHz respectively. Good agreement was obtained where the filter exhibited the third passband with center frequency of 1.87 GHz. The filter has band to band isolation better than 36.0 dB.

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Wide stopband miniaturized “I”‐typed EBG with DGS

Rong

Wang

Chen

et al. 2017

Micro & Optical Tech Letters

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An electromagnetic band‐gap (EBG) structure which combines a tapered surface structure and a tapered defected ground structure is proposed in this article. “I”‐typed EBG units with different size and center distance are etched on the microstrip line on the upper layer of the substrate. Without sacrificing the bandwidth, a feasible method is proposed to implement miniaturization by reducing the second half of the tapered EBG, which is concluded by analyzing the relations between the working frequency and tapered periodic structure. By using HFSS simulation tool, the proposed structure possesses a wide stop‐band of 23.72 GHz (1.88–29.20 GHz). Particularly, the actual size characteristic is only about 40 × 20 × 0.6 mm3. Meanwhile, the proposed structure is fabricated and measured. And the experimental results basically agree well with the simulated results, which indicate that the proposed EBG is promising for designing high performance band‐stop filters and associated antennas with width bandwidth and small size.

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A Compact Configurable EBG Filter on PCB

Cited by 20 publications

References 14 publications

A compact customizable tunable EBG filter

A compact customizable tunable EBG filter

A compact triple-band bandpass filter with customizable frequencies

Wide stopband miniaturized “I”‐typed EBG with DGS

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