Dual-Band Dual-Polarized Spiral Antenna for Chinese Compass Navigation Satellite System
نویسندگان
چکیده
In Chinese Compass Navigation Satellite System (CNSS for short), dual-band antennas are more attractive, because they can provide both navigation and communication services. In this paper, we present a dual-band dual-circular-polarized planar spiral-slot CNSS antenna. This antenna works at L band (1616± 5MHz, left-handed circular polarization, LHCP) and S band (2492± 5MHz, right-handed circular polarization, RHCP). Numerical results show that the impedance bandwidth (S11 < −10 dB), 3 dB axial ratio bandwidth and antenna gain at L band are about 242 MHz, 79 MHz and 4.92 dB, respectively, while the simulated impedance bandwidth (S11 < −10 dB), 3 dB axial ratio bandwidth and antenna gain at S band are about 180 MHz, 58MHz and 5.25 dB, respectively. An experiment was carried out to verify our design. Measured results show that impedance bandwidth (S11 < −10 dB) and 3 dB axial ratio bandwidth L band are about 300 MHz and 14 MHz, respectively, while the measured impedance bandwidth (S11 < −10 dB) and 3 dB axial ratio bandwidth at S band are about 210MHz, 10MHz, respectively. The measured results basically agree with the simulated ones and meet the requirement of CNSS terminal antennas.
منابع مشابه
Dual-Band Annular-Ring Microstrip Patch Antenna for Satellite Applications
A dual-band circularly polarized antenna fed by four apertures that covers the bands of GPS, Galileo, is introduced. The ARSAs designed using FR4 substrates in the L and S bands have 3-dB axial-ratio bandwidths (ARBWs) of as large as 37% and 52%, respectively, whereas the one using an RT5880 substrate in the L band, 61%. In these 3-dB axial-ratio bands, impedance matching with VSWR<=1.8 is also...
متن کاملطراحی و ساخت آنتن مایکرواستریپ سه بانده و دوپلاریزه برای BTS
In this paper, a simple dual-band dual-polarized aperture stacked patch antenna with double sided notch is presented. This antenna is suitable for operation in telecommunication base stations. One of the bands covers the GSM band, while the other covers both DCS and UMTS bands. The proposed antenna shows good port decoupling of less than -30dB for dual linear polarization over its operating ban...
متن کاملDesign of a S/X band Dual-Polarized Microstrip Array Antenna for Radar Application
Office of Naval Research (ONR) of U.S.A navy has been carrying out research about advanced multifunction radio frequency concept (AMRFC) to apply the Multifunction Electronic Warfare & Electronic Support (MFEW ES) system to the future navy battleship [1]. In order to that conventional radar and communication antennas need to be active phased array antennas that can provide multi-functions such ...
متن کاملDual-band Circularly Polarized Antenna with Low Wide-angle Axial-ratio for Tri- Band Gps Applications
This paper presents the design of a dual-band microstrip antenna with low wide-angle axial-ratio. The antenna is designed for global positioning satellite operations at 1227MHz (L2), 1575 MHz (L1) and 1176 MHz (L5, available after 2007). This antenna has another advantage of a much wider band in both VSWR and 3 dB axial-ratio compared with single-fed GPS antennas. Details of the design, simulat...
متن کاملA Dual-Band Circularly Polarized Aperture-Coupled Stacked Microstrip Antenna for Global Positioning Satellite
This paper describes the design and testing of an aperture-coupled circularly polarized antenna for global positioning satellite (GPS) applications. The antenna operates at both the L1 and L2 frequencies of 1575 and 1227 MHz, which is required for differential GPS systems in order to provide maximum positioning accuracy. Electrical performance, lowprofile, and cost were equally important requir...
متن کامل