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A vertical distribution low temperature cofired-ceramic (LTCC) duplexer is presented in this paper. It is constructed using two band pass filters based on lump-element components. In order to reduce the size, we use vertical structure to arrange the two band pass filters. The two band pass filters are both true third-order topology and T type. Their center frequencies are individually 1.61GHz and...
This paper presents a miniaturized multi-layer Marchand Balun realized by low temperature co-fired ceramic (LTCC) technology for wireless application. In order to seize the advantage of LTCC technology on multi-layer substrates and make full use of three-dimensional space to develop small size device, the broadside coupled strip line is utilized to design the coupled region of the Marchand Balun....
A band-pass filter based on different materials in LTCC/LTCF technology is proposed in this letter. The BPF was constructed with three-order Chebyshev coupled resonators configuration. With the conventional LTCC technology we can't get big inductance due to the limitation of permeability of ceramics for miniaturization. So we can't get conventional lumped filters with low resonance frequency. In LTCC...
In this paper a compact antenna based on LTCC (low temperature co-fire ceramic) technology is designed and simulated. The center frequency is about 2.45GHz and it is an omni-directional antenna and its polarization is linear. By means of EM full wave software simulation, the bandwidth of VSWR<;2 is more than 200MHz and its peak gain can reach 2.3dBi.The antennas size is about 6mm*4mm*1.2mm.The...
In this paper, we present design, analysis and simulation of a front-end of a transceiver which works in Ku-band (15.5 GHz) based on multi-layer LTCC (low temperature co-fire ceramic) technology. The superheterodyne structure is selected and some GaAs bare chips from Hittite company such as mixer, power amplifier, LNA, drive amplifier are used in this MCM (multi-chip module). Some considerations about...
This paper presents a miniaturized multi-layer lowpass filter with sharp roll off suppression rate beyond the passband realized by low temperature co-fired ceramic (LTCC) technology for microwave application. By improving the prototype filter structure, three transmission zeros can be introduced to achieve sharp suppression rate. The proposed filter is designed with a cut-off frequency of 1.40GHz...
Wilkinson power divider with the simple design method and outstanding performance are widely used in RF/microwave front-end transceiver. A novel and simple miniaturized power divider based on equivalent circuits is presented. A bandwidth of 200MHz, the center frequency of 1.616 GHz Compass Navigation System (CNS) multilayer power divider was designed and measured based on Low Temperature Co-fired...
T-prototype Bandpass Filter with Two Finite Transmission ZerosA simple and successful design for a modified T-prototype bandpass filter with two finite transmission zeros is presented in this paper. A bandwidth of 260MHz, the center frequency of 1.616 GHz Compass Navigation System (CNS) bandpass filter was designed and measured based on Low Temperature Co-fired Ceramic (LTCC) technology. The simulated...
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