Design and investigation of miniaturized high-performance LTCC filters for wireless communications

Piatnitsa, V.; Kholodnyak, Dmitry; Tick, T.; Simin, A.; Turalchuk, Pavel; Zameshaeva, Evgenia; Jäntti, Jyri; Jantunen, Heli; Vendik, I.

doi:10.1109/eumc.2007.4405248

Cited by 9 publications

(2 citation statements)

References 5 publications

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“…According to Equation (1), the calculated insertion loss corresponds to 0.84 dB and 1.15 dB for the cases of increased and decreased couplings (see Figure 1b), respectively, which is in a good agreement with the EM modelling results. Typically, the insertion loss is decreased with the BW broadening [17]. Even though the BW was extended, the insertion loss became higher since the transmission and reflection coefficients ripples increased.…”

Section: Unit-cell Designmentioning

confidence: 99%

Small-Size Square Ring 1-Bit Reconfigurable Transmitarray Unit Cell for C-Band Applications

2020

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The paper presents a reconfigurable linear polarized transmitarray unit cell design with 1-bit phase quantization for C-band applications. The unit-cell structure consists of two square ring patches of reduced size, which are connected using a coupling element. Incorporating p-i-n diodes inside the coupling element allows controlling the current flow direction in the antennas and providing a 180° phase difference. An analysis of the unit-cell insertion loss contributed by small-size antennas and coupling between them is discussed. The p-i-n diode parasitic parameters are taken into consideration of the unit cell performance simulation. It was shown that the insertion loss caused by the p-i-n diodes parasitic parameters can be reduced. The original biasing circuitry providing p-i-n diodes control voltage is proposed. Simulation results of the reconfigurable unit cell are validated by measurements in a waveguide. As a result of measurements, the insertion loss is −2.3 dB at 5.9 GHz, the reflection coefficient module is less than −20 dB, the phase difference error does not exceed ± 1° in the passband, while 3-dB bandwidth corresponds to 180 MHz (3.4%).

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Section: Unit-cell Designmentioning

confidence: 99%

Small-Size Square Ring 1-Bit Reconfigurable Transmitarray Unit Cell for C-Band Applications

2020

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“…Two successive stages are considered: i) The design of the devices and the analysis of their reproducible fabrication based on the multilayer low-temperature co-fired ceramics (LTCC) technology [13]- [15], and ii) the analysis of the tunability of the devices.…”

Section: Introductionmentioning

confidence: 99%

Tunable Dual-Band Microwave Devices based on a Combination of Left/Right-Handed Transmission Lines

Vendik

Kholodnyak

Kapitanova

et al. 2008

2008 38th European Microwave Conference

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Metamaterial transmission lines can be realized as a combination of transmission line sections with positive and negative dispersion. Such lines, which are also known as right-and left-handed transmission lines, exhibit different dispersion characteristics. Compared to homogeneous networks, the use of cascaded line sections gives additional degrees of freedom for improving the performance of microwave devices. For the design process, LC-equivalents of the right-and left-handed transmission line sections are used. This facilitates the consideration of tunable capacitors, e.g., varactor diodes, to provide frequency tuning of the devices. At the same time, the geometrical dimensions of the devices can be drastically reduced. This paper presents the results of simulation and experimental investigation of a miniature rat-race-ring and a dual-band filter free of spurious response, both manufactured as fully-integrated ceramic multilayer modules based on Low-Temperature Co-fired Ceramics. The design of tunable versions of these devices is also discussed.

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Compact Filters and Filter Miniaturization

Hong¹

2011

Microstrip Filters for RF/Microwave Applications

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Design and investigation of miniaturized high-performance LTCC filters for wireless communications

Cited by 9 publications

References 5 publications

Small-Size Square Ring 1-Bit Reconfigurable Transmitarray Unit Cell for C-Band Applications

Small-Size Square Ring 1-Bit Reconfigurable Transmitarray Unit Cell for C-Band Applications

Tunable Dual-Band Microwave Devices based on a Combination of Left/Right-Handed Transmission Lines

Compact Filters and Filter Miniaturization

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