28 GHz Array Antenna with Built-In Filters in Multilayered LTCC Substrate
- Resource Type
- Conference
- Authors
- Sudo, Kaoru; Onaka, Kengo; Hirose, Keiichi; Hasegawa, Yoshiaki; Komura, Ryo; Yamada, Yoshiki; Hayafuji, Hisao
- Source
- 2019 International Symposium on Antennas and Propagation (ISAP) Antennas and Propagation (ISAP), 2019 International Symposium on. :1-4 Oct, 2019
- Subject
- Bioengineering
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineering Profession
Fields, Waves and Electromagnetics
Nuclear Engineering
Photonics and Electrooptics
Power, Energy and Industry Applications
Robotics and Control Systems
Transportation
- Language
This paper presents an array antenna with a low pass filter (LPF) in LTCC multilayered substrate with low loss, high attenuation and small size in 28 GHz band. A differential feeding method for each patch antenna is employed to improve symmetricity of directivity for beam forming. The insertion loss of the LPF is less than 0.5 dB and the spurious emission in 2nd harmonic band of Band-n257 was suppressed by over 20 dB thanks to putting the LPF in front of the antenna. The symmetricity of the directivity for beam forming was improved owing to the differential feeding.