A New Designed Navigation Microstrip Patch Antenna with Air Back Cavity
In this paper a new designed microstrip patch antenna with air back cavity will be mentioned, compared to the common microstrip patch antenna, it improves the narrow bandwidth and the poor radiation efficiency. The low precision machining requires and the
- PDF / 449,677 Bytes
- 9 Pages / 439.37 x 666.142 pts Page_size
- 7 Downloads / 154 Views
A New Designed Navigation Microstrip Patch Antenna with Air Back Cavity Liu Zheng and Li Feng
Abstract In this paper a new designed microstrip patch antenna with air back cavity will be mentioned, compared to the common microstrip patch antenna, it improves the narrow bandwidth and the poor radiation efficiency. The low precision machining requires and the flexible structure in project make the new antenna very fit to the multiband satellite navigation receivers. By the electromagnet simulation software HFSS, the scientific of this new design will be proved firstly for this paper, and a prototype will be produced to test and to prove the feasibility. The new designed microstrip patch antenna might widely replace the common microstrip patch antenna in many navigation applications. Keywords Microstrip patch antenna efficiency Miniaturization
Air back cavity Bandwidth Radiation
41.1 Introduction Microstrip patch antennas were first proposed in the early 1970s and since then a plethora of activity in this area of antenna engineering has occurred, probably more than in any other field of antenna research and development. Microstrip patch antennas have several well-known integrated over other antenna structures, including their low profile and hence conformal nature, light weight, low cost of production, robust nature, and compatibility with microwave monolithic integrated circuits and optoelectronic integrated circuits technologies [1]. Because of these L. Zheng (&) L. Feng Beijing Automation Control Equipments Institute, Feihangstr. 1, Beijing 100074, China e-mail: [email protected] L. Feng e-mail: [email protected]
J. Sun et al. (eds.), China Satellite Navigation Conference (CSNC) 2014 Proceedings: Volume I, Lecture Notes in Electrical Engineering 303, DOI: 10.1007/978-3-642-54737-9_41, Springer-Verlag Berlin Heidelberg 2014
477
478
L. Zheng and L. Feng
merits, forms of the microstrip patch antenna have been utilized in satellite navigation terminals for GPS, BD 2. generation, etc. Despite the previously mentioned features, microstrip patch antennas suffer from several inherent disadvantages of this technology in its pure form, namely, they have small bandwidth and relatively poor radiation efficiency resulting from surface wave excitation and conductor and dielectric losses. With our selfdeveloped BD2 navigation system got into the practical stage, multiband navigation receivers become more popular today. That needs a greater bandwidth, a higher gain for every navigation frequency, and better circular polarization characteristics from the navigation antennas urgently. In particular, the design requirements for miniaturization, the designers use more high dielectric constant materials for the microstrip patch antennas, this will result in a further decline bandwidth and radiation efficiency of the microstrip patch antennas. The impedance bandwidth of the microstrip patch antennas can be extended with a wideband feed network, but not for the radiation bandwidth. Even because of the use of t
Data Loading...
