Radiation Phase Control of a Single-Layer Ring Microstrip Antenna Fed by an L-Probe with a Variable Reactance Circuit

Autor: Sakuyoshi Saito, Takahiro Suzuki, Yusuke Asanuma, Yuichi Kimura
Rok vydání: 2021
Předmět:
Zdroj: 2020 International Symposium on Antennas and Propagation (ISAP).
DOI: 10.23919/isap47053.2021.9391479
Popis: This paper presents a single-layer ring microstrip antenna (MSA) fed by an L-probe with a variable reactance circuit for a beam adjustable microstrip antenna arrays (BA-MSAA). The BA-MSAA consists of a central patch element fed by a feeding line and two parasitic patches with a variable reactance circuit (VRC) adjacent to the center patch. Radiation patterns of the BA-MSAA are controlled electronically by reactance values of the VRCs. In order to enhance the beam-shaping performance of the BA-MSAA, it is necessary to feed the all patches and to control the radiation phases of the fed patches independently. For this purpose, a single-layer ring MSA fed by an L-probe with a VRC is presented in this paper. The prototype MSA with the VRC is designed at 5 GHz. The radiation phase of the prototype MSA can be controlled in the range of about 80 degrees when the normalized reactance of the VRC is varied from –2.0 to 2.0.
Databáze: OpenAIRE