A low profile type high frequency transformer using a fine grained Mn-Zn ferrite

2002 ◽  
Author(s):  
S. Itoh ◽  
Y. Yamamoto ◽  
A. Makino ◽  
T. Yamaguchi ◽  
I. Sasada
Keyword(s):  
High Frequency ◽  
Fine Grained ◽  
High Frequency Transformer ◽  
Profile Type ◽  
Low Profile ◽  
Zn Ferrite

A novel transmission-line type high frequency transformer using a fine-grain Mn-Zn ferrite [for ballasts]

1999 ◽  
Vol 35 (5) ◽  
pp. 3538-3540 ◽  
Author(s):  
T. Inoue ◽  
M. Furukawa ◽  
T. Sato ◽  
K. Yamasawa ◽  
T. Takahashi ◽  
...  
Keyword(s):  
Transmission Line ◽  
High Frequency ◽  
Fine Grain ◽  
High Frequency Transformer ◽  
Zn Ferrite ◽  
Line Type

Fine grained Mn–Zn ferrite for high frequency driving

1998 ◽  
Vol 83 (11) ◽  
pp. 6861-6863 ◽  
Author(s):  
K. Takadate ◽  
Y. Yamamoto ◽  
A. Makino ◽  
T. Yamaguchi ◽  
I. Sasada
Keyword(s):  
High Frequency ◽  
Fine Grained ◽  
Zn Ferrite

scholarly journals A Low-Profile HF Meandered Dipole Antenna with a Ferrite-Loaded Artificial Magnetic Conductor

2021 ◽  
Vol 11 (5) ◽  
pp. 2237
Author(s):  
Oh Heon Kwon ◽  
Won Bin Park ◽  
Juho Yun ◽  
Hong Jun Lim ◽  
Keum Cheol Hwang
Keyword(s):  
High Frequency ◽  
Dipole Antenna ◽  
Unit Cell ◽  
Operating Frequency ◽  
High Permeability ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Low Profile ◽  
Compact Size ◽  
Binary Genetic Algorithm

In this paper, a low-profile HF (high-frequency) meandered dipole antenna with a ferrite-loaded artificial magnetic conductor (AMC) is proposed. To operate in the HF band while retaining a compact size, ferrite with high permeability is applied to the unit cell of the AMC. The operating frequency bandwidth of the designed unit cell of the AMC is 1.89:1 (19–36 MHz). Thereafter, a meandered dipole antenna is designed by implementing a binary genetic algorithm and is combined with the AMC. The overall size of the designed antenna is 0.06×0.06×0.002 λ3 at the lowest operating frequency. The proposed dipole antenna with a ferrite-loaded AMC is fabricated and measured. The measured VSWR bandwidth (<3) covers 20–30 MHz on the HF band. To confirm the performance of the antenna, a reference monopole antenna which operates on the HF band was selected, and the measured receiving power is compared with the result of the proposed antenna with the AMC.

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