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In this paper, it introduces some new developments of several new LTCC microwave stereo integrated circuits, including: X-band ultra wideband balun, ultra wideband 3dB orthogonal directional couple, a new bandpass filter with highly steep band, ultra-wideband and palanar magtic T, bandpass filter with double transmission zeros, quintuple-mode dual-band filter, ultra broadband vivaldi antenna with...
In this paper studies an X-band ultra-wideband micro-balun based on LTCC, the working frequency of 7–13GHz, belonging to the X-band, the relative bandwidth is 60%. In this paper, from the design and manufacture of the product, combined with the theoretical basis, through the HFSS simulation software to complete the design, finally, it decided to use three coupling lines to improved Marchand Balun...
In this paper, an ultra-wideband stripline 3dB orthogonal directional coupler based on LTCC is studied. The operating frequency is 0.5–3.5GHz and the relative bandwidth is 150%. The difficulty lies in the requirements of ultra-wideband, high performance and miniaturization. In this paper, we started from the design and manufacture of the product, combined with the theoretical basis, through the HFSS...
This paper introduces the research results of the GaAs ultra-wideband MMIC control circuit technology, including: ultra-wideband digital phase shifter, digital attenuator, absorption type switch, reflective switch and vector modulator. The research results of three-dimensional integrated circuit technology based on LTCC are also proposed in this paper, including a variety of LTCC bandpass filters,...
In this paper, a multi-stage LTCC bandpass filter with an good performance is proposed, which composes of six resonators. Two transmission zeros were realized by cross-coupling to achieve good stop-band attenuation. The filter is implemented based on the theory of the tapped combline filter, 3-D EM simulation technology, and design of experiment (DOE) method. It presents a small size, high frequency...
In this paper, the design of miniaturized low-pass filter in a Low Temperature Co-fired Ceramic(LTCC) Technology is presented. The pass-band of the low-pass filter is from 900MHz to 1450MHz. The capacitor is constructed by multilayer MIM(Mental-Insulator-Mental) capacitor, and the inductor is fabricated by a narrow metal transmission line. The VSWR of input and output port is less than 1.6. The whole...
This letter outlines the design and manufacture of a UHF-band miniaturized band-pass filter realized by low-temperature cofired ceramic (LTCC) technology for super heterodyne microwave receiver applications. A distinct feature of this filter is the smaller size than conventional filter at such a low frequency and steady pass-band temperature electrical performance compared with surface acoustic wave...
A low-temperature-cofired ceramic (LTCC) bandpass filter with low insertion loss and high image rejection is presented for super heterodyne microwave receiver within 6.5-7.1 GHz band. By improving the filter cell structure, two transmission zeros can be generated to achieve wide-band image suppression from cascading filter cells. The presented method provides the design flexibility of locating these...
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