Zobrazeno 1 - 10
of 45
pro vyhledávání: '"Nobuhiro Kuga"'
Autor:
Masayoshi Kuwata, Nobuhiro Kuga
Publikováno v:
IEICE Communications Express. 11:772-777
Small and planar termination for non-contact PIM measurement using planar balanced-transmission line
Publikováno v:
2022 Asia-Pacific Microwave Conference (APMC).
In this letter, we describe the design for the variable low-PIM termination composed of the voltage-controlled IM-source, a fixed attenuator, and a linear attenuator. The design method for evaluating PIM-level of the fixed attenuator is presented in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::86814c6dc319c256fd84a59fcce032f0
https://doi.org/10.36227/techrxiv.17793842
https://doi.org/10.36227/techrxiv.17793842
Autor:
Nobuhiro kuga, Masayoshi Kuwata
A non-contact passive intermodulation distortion (PIM) measurement method for antenna using high-level IM standard (HIMS) is described as proposed herein. A novel method to estimate coupling loss between sensing antenna and a sample antenna is propos
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0c5014eecddfea7e57561e4fd50da820
https://doi.org/10.36227/techrxiv.17020016.v1
https://doi.org/10.36227/techrxiv.17020016.v1
Publikováno v:
2020 International Symposium on Antennas and Propagation (ISAP).
A non-contact connector for a balanced PIM measurement system is proposed. This paper shows that proposed connector operates at three frequencies in PIM band and whose frequencies are able to be tuned independently.
Autor:
Masayoshi Kuwata, Nobuhiro Kuga
Publikováno v:
2020 International Symposium on Antennas and Propagation (ISAP).
In this paper, we propose a method of Non-contact PIM measurement for array antenna by substituting open-stub extension for low-PIM-termination. DUT(Device Under Test) is excited by the PIM tester placed outside and induced PIM is also detected by it
Autor:
Nobuhiro Kuga, Makoto Takinami
Publikováno v:
2019 IEEE Asia-Pacific Microwave Conference (APMC).
In this paper, an antenna which is robust to a metallic object is proposed. A metallic object is placed in the vicinity of the antenna, where a part of it is inserted into the element. The fluctuation of resonant frequency and reflection $S_{11}$ are
Autor:
Takaya Kimino, Nobuhiro Kuga
Publikováno v:
2019 IEEE Asia-Pacific Microwave Conference (APMC).
This paper proposes a unidirectional pattern strip-loop antenna having a feeding terminal on the reflector side. The proposed antenna is configuration suitable for surface-mounting and easy to connect to a planar feeding line. It is shown that the un
Autor:
Nobuhiro Kuga, Ryosuke Okawa
Publikováno v:
2017 IEEE Asia Pacific Microwave Conference (APMC).
In this paper, we propose an extraction method of the reverse-PIM component of the direct measurement from the non-contact measurement. To compensate the frequency-dependent mutual coupling between employed antennas, each transmission power is set so
Autor:
Shinji Ishiyama, Nobuhiro Kuga
Publikováno v:
2017 IEEE MTT-S International Microwave Symposium (IMS).
This paper proposes a non-contact PIM-measurement method for dielectric wave absorbers. It is shown experimentally that the PIM characteristics of a dielectric wave absorber can be measured in an open-ended coaxial tube by mounting a metallic resonat