A Small-Size High-Rejection LTCC Diplexer for WLAN Applications Based on a New Dual-Band Bandpass Filter.

Yatsenko, Andriy; Orlenko, D.; Sakhnenko, S.; Sevskiy, G.; Heide, P.

doi:10.1109/mwsym.2007.380305

Cited by 23 publications

(12 citation statements)

References 5 publications

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“…In [8,9], microstrip diplexer based on dual-passband filter is also designed to reduce the size of the diplexer, however the large size of the matching networks limit the effect of size reduction. In [10], compact diplexer based on double-sided parallel-strip line is realized, but this diplexer is based on multilayer structure.…”

Section: Introductionmentioning

confidence: 99%

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Diplexers Based on Microstrip Line Resonators With Loaded Elements

Shi¹,

Chen²,

Bao³

2011

PIER

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Abstract-In this paper, microstrip line resonators with loaded elements are proposed and studied to design microstrip diplexer. To demonstrate the design ideas, the equivalent circuits of the proposed resonators are built and studied. It is found that the different loads on different positions of the proposed half-wavelength resonator make the resonator have different features, which will easily control the characteristic of the diplexers. And here, resistor, open stub, and shorted stub are used as loaded elements. It is found the resistor loaded on the center of the microstrip line resonator can extremely reduce the unloaded quality factor of even-mode resonant frequency, which can be used to suppress the harmonics of the diplexer. The loaded open stub not only can reduce the size of the diplexer, but also can control the frequency ratio between the fundamental frequency and second harmonic of a resonator, which can increases the frequency ratio between the two passbands of the diplexer. As for the loaded shorted stub, it can enlarge the size of the diplexer. To demonstrate the design ideas, three diplexers are presented. The comparisons between the loaded and unloaded diplexers are given. The experimental results agree well to the theoretical predictions and simulations.

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Section: Introductionmentioning

confidence: 99%

“…Besides the size reduction, high performance for microstrip diplexer is also important. In [2][3][4][5][6][7][8][9][10], each diplexer still has one or two drawbacks of the performance of the diplexers, such as selectivity, isolation, harmonic suppression, and frequency-ratio range of the two passbands.…”

Section: Introductionmentioning

confidence: 99%

Diplexers Based on Microstrip Line Resonators With Loaded Elements

Shi¹,

Chen²,

Bao³

2011

PIER

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“…and active (power amplifiers, switches, low-dropout regulators etc.) devices [1]- [3]. This makes LTCC very attractive for modules and discrete components manufacturers offering low cost, high performance RF solutions up to millimetre-waves.…”

Section: Introductionmentioning

confidence: 99%

Novel Design Approach for Ultra Compact, High Rejection LTCC Balanced Filter

Yatsenko¹,

Heyen²,

Sevskiy³

et al. 2008

2008 38th European Microwave Conference

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In this paper a new approach for miniaturizing multilayer LTCC designs (Low Temperature Co-Fired Ceramics is proposed. Using the stacking options inside LTCC more consequently, a new very compact high-rejection balanced bandpass filter for WirelessLAN (based on IEEE 802.11a standard) is realized. The demonstrated filter performance is a very promising. With only 2.7 dB insertion loss in the band of interest and excellent out-of-band attenuation it occupies area less than 1.8 mm². Compared to designs with the same dielectric constant this downsizes by factor of two the required area without degrading the performance. The correlation between measurement and simulation results is a very good.

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“…Among several technologies to realise compact and high integrated RF components and modules, LTCC is one of the most promising technologies. For this reason, many passive components and RF front-end modules (FEMs) using LTCC technology have been reported [1][2][3][4].…”

mentioning

confidence: 99%

“…Unlike the conventional diplexer and duplexer [2][3][4], the proposed filter can play a role of a LPF or a BPF for the same frequency band with very low insertion loss and fairly high isolation between the LPF and BPF. The realisation of the proposed filter is achieved by LTCC technology.…”

mentioning

confidence: 99%

Design of selectable low- and bandpass filter for 2.4 GHz applications

Kim

et al. 2010

Electron. Lett.

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A Small-Size High-Rejection LTCC Diplexer for WLAN Applications Based on a New Dual-Band Bandpass Filter.

Cited by 23 publications

References 5 publications

Diplexers Based on Microstrip Line Resonators With Loaded Elements

Diplexers Based on Microstrip Line Resonators With Loaded Elements

Novel Design Approach for Ultra Compact, High Rejection LTCC Balanced Filter

Design of selectable low- and bandpass filter for 2.4 GHz applications

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