Millimeter-Wave Microstrip Comb-Line Antenna Using Reflection-Canceling Slit Structure

Autor:	Yuki Hayashi, M Nanjo, Hiroshi Hirayama, Kunio Sakakibara, Shingo Sugawa, Nobuyoshi Kikuma
Rok vydání:	2011
Předmět:	Patch antenna Physics business.industry Physics::Optics Radiation pattern Passive radiator Microstrip antenna Optics Return loss Reflection (physics) Array gain Electrical and Electronic Engineering Antenna (radio) business
Zdroj:	IEEE Transactions on Antennas and Propagation. 59:398-406
ISSN:	1558-2221 0018-926X
DOI:	10.1109/tap.2010.2096180
Popis:	A microstrip comb-line antenna is developed in the millimeter-wave band. When the element spacing is one guide wavelength for the broadside beam in the traveling-wave excitation, reflections from all the radiating elements are synthesized in phase. Therefore, the return loss increases significantly. Furthermore, re-radiation from elements due to the reflection wave degrades the design accuracy for the required radiation pattern. We propose the way to improve the reflection characteristic of the antenna with arbitrary beam directions including strictly a broadside direction. To suppress the reflection, we propose a reflection-canceling slit structure installed on the feeding line around each radiating element. A 27-element linear array antenna with a broadside beam is developed at 76.5 GHz. To confirm the feasibility of the simple design procedure, the performance is evaluated through the measurement in the millimeter-wave band.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::82946fc9113fa017d3fbb24a7506d9c2 https://doi.org/10.1109/tap.2010.2096180 Zobrazit plný text záznamu