Search Results - "Uchida, Hiromitsu"

Synthesis of Low-Pass Real-to-Real Impedance Transformer With Coupled-Inductors by Uchida, Hiromitsu, Nakashima, Masao, Handa, Seiichi, Sagara, Takehiko, Hariu, Kenichi

“…A network-synthesis procedure for a new low-pass real-to-real (resistance-to-resistance) impedance transformer is presented. Conventionally, the well-known…”
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Stabilization of millimeter-wave multistage amplifier using amplitude-and-phase setting circuits by Uchida, Hiromitsu, Nakahara, Kazuhiko, Takeuchi, Norio, Matsunaga, Makoto, Itoh, Yasushi

“…This paper derives the conditions to be satisfied by the amplifier in each stage of a multistage amplifier in order for it to be absolutely stable. It is shown…”
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An X-band internally-matched GaN HEMT amplifier with compact quasi-lumped-element harmonic-terminating network by Uchida, Hiromitsu, Noto, Hifumi, Yamanaka, Koji, Nakayama, Masatoshi, Hirano, Yoshihito

“…A compact quasi-lumped-element resonator is proposed as a harmonic-terminating network for internally-matched amplifiers. It is a parallel connection of an…”
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Dual-band-rejection filter for distortion reduction in RF transmitters by Uchida, H., Kamino, H., Totani, K., Yoneda, N., Miyazaki, M., Konishi, Y., Makino, S., Hirokawa, J., Ando, M.

“…A novel concept of dual-band-rejection filter (DBRF) is proposed with its circuit synthesis procedure and examples of its realization with dielectric…”
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An Elliptic-Function Bandpass Filter Employing Left-Handed Operations of an Inter-Digital Coupled Line by Uchida, H., Yoneda, N., Konishi, Y., Makino, S.

“…A new elliptic-function bandpass filter (BPF) is proposed, which utilizes an inter-digital coupled line (IDCPL) as a left-handed transmission line. The IDCPL…”
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Bandpass Directional Couplers with Electromagnetically-Coupled Resonators by Uchida, H., Yoneda, N., Konishi, Y., Makino, S.

“…Compact 90- and 180-degree directional couplers incorporating bandpass characteristics are presented. They can integrate a bandpass filter and a…”
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A resistor-loaded microstrip line resonator with a punched hole structure for ultra-wide-stopband bandpass filters by Uchida, Hiromitsu, Komaru, Ryota, Hangai, Masatake, Nakayama, Masatoshi, Hirano, Yoshihito

“…A novel microstrip line resonator is proposed for ultra-wide-stopband microwave bandpass filters. It consists of a stepped-impedance resonator (SIR) with a…”
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Low-spurious-response coaxial-line BPF with saucer-loaded stepped-impedance resonators designed with mode-matching technique by Uchida, Hiromitsu, Ohwada, Tetsu, Yoneda, Naofumi, Takeuchi, Norio, Miyazaki, Moriyasu, Konishi, Yoshihiko

“…A novel stepped‐impedance resonator with a thin metal saucer is proposed in order to reduce spurious‐response levels in a coaxial‐line bandpass filter (BPF)…”
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Low-spurious coaxial-line bandpass filter with saucer-loaded stepped-impedance resonators by Uchida, H., Furukawa, Y., Ohwada, T.

“…A low-spurious coaxial-line bandpass filter (BPF) with saucer-loaded stepped-impedance resonators (SAUSIRs) has been developed. The SAUSIR consists of a…”
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Conditions of half-frequency oscillation in high-power amplifier with FET and its suppression method using quarter-wavelength open-circuited stub by Uchida, Hiromitsu, Itoh, Yasushi, Miyazaki, Moriyasu, Urasaki, Shuji

“…With regard to the half‐frequency oscillation observed in the nonlinear operation of a microwave power amplifier based on FETs, the voltage and current of the…”
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A compact T/R switching circuit using quadrature couplers and drain-driven HPAs by Uchida, H., Nii, M., Tsukahara, Y., Miyazaki, M., Itoh, Y.

“…A novel T/R switching circuit is proposed for microwave T/R modules. It consists of balanced high-power amplifiers with quadrature couplers, and a low-noise…”
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Dual-band-rejection filter for distortion reduction in RF transmitters by Uchida, H., Kamino, H., Totani, K., Yoneda, N., Miyazaki, M., Konishi, Y., Makino, S., Hirokawa, J., Ando, M.

“…A novel concept of dual-band-rejection filter (DBRF) is proposed with its circuit synthesis procedure and an example of its realization with dielectric…”
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A double-layer dipole array polarizer for planar antenna by Uchida, Hiromitsu, Sakurai, Kimio, Ando, Makato, Goto, Naohisa

“…This paper proposes a periodic dipole array with a double‐layered structure as the polarizer for a planar antenna. The structure is analyzed in the spectral…”
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A microstrip delay line with periodically-loaded shunt inductors for waveguide-fed array antennas by Uchida, H., Sasaki, T., Yoneda, N., Makino, S.

“…A low-profile planar delay line is proposed for waveguide-fed array antennas. It consists of a compact microstrip line with periodically-loaded inductors, and…”
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A frequency-tunable amplifier with a simple tunable admittance inverter by Uchida, H., Ogura, K., Konishi, Y., Makino, S.

“…This paper proposes a frequency-tunable amplifier with a simple frequency-tunable admittance inverter. The admittance inverter consists of a fixed-length…”
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A widely-tunable balanced bandstop filter with low reflections and separate stop-bands by Uchida, H., Sato, A., Ohno, A., Yoneda, N., Konishi, Y., Makino, S.

“…A frequency-tunable bandstop filter (BSF) with low reflections, separate stop-bands, and more than one-octave tunable frequency range is proposed. The BSF…”
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Ka-band multistage MMIC low-noise amplifier using source inductors with different values for each stage by Uchida, H., Takatsu, S., Nakahara, K., Katoh, T., Itoh, Y., Imai, R., Yamamoto, M., Kadowaki, N.

“…A Ka-band three-stage monolithic microwave integrated circuit (MMIC) low-noise amplifier using source inductors with different values for each stage has been…”
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