annular slot antenna keeping constant the operation frequency. II. DESIGN CONCEPT The annular slot antenna consists of a circular slot on a square, metal ground plane that is fed by a microstrip line, fabricated on the bottom of the Duroid substrate as can be seen in Figs 1a and 1b. Big Diode Fig. 1a ASA front side Ls1 L1 D1 D3D2 L2 Ls2 Pattern and Frequency Reconfigurable Annular Slot Antenna ... Annular slot antenna schematic The feeding line with the matching Fig. 2. Simulated normalized radiation patterns on the x-y plane with a short stubs are on the bottom and the annular slot antenna is on the top side of the circuit at 225 . The null direction for the slot without any short would be in the substrate. A Compact Annular Ring Microstrip Antenna for WSN Applications A compact annular ring microstrip antenna was proposed for a wireless sensor network (WSN) application in the 2.4 GHz band. In this paper the major considerations of the conformal antenna design were the compact size and the impact on antenna's performance of a steel installation base. antenna | 论文 Lei Ge, Chow-Yen-Desmond Sim, Chuan-Wei Lin and Ting-An Chen, "Eccentric Annular Slot Patch Antenna with Frequency Agility for UHF RFID Reader Applications," International Journal of RF and Microwave Computer-Aided Engineering, vol. 27, no.2, pp. 1-9, Oct. 2016.
A Broad-Band Annular-Ring Microstrip Antenna. ... The annular ring may also be somewhat broadband in nature when operated near the TM 12 resonance [5]. ... The small and wideband annular ring slot ...
Microstrip-fed dual-frequency annular-slot antenna loaded by split-ring ... A compact dual-band annular-slot antenna loaded by a concentric ... For the case where a wideband response is required for both bands, it is shown that 26 and ... A low-profile triple-band circularly polarized wide slot antenna for ... Aug 8, 2018 ... A single-feed tri-band CP annular slot antenna is designed to operate ..... BR (2003) Analysis of two-concentric annular ring microstrip antenna.
Broadband and Wireless Computing, Communication and Applications; Broadband and Wireless Networking; Broadband ANdean JOint; Broadband Annular Dual-Slot Antenna; broadband antenna; broadband antenna; Broadband Applications and Demonstrations Laboratory; Broadband Area Network; Broadband Array in Taiwan for Seismology; Broadband Array ...
Antenna - Antennas Direct, Inc. - Free Patents Online Complete Patent Searching Database and Patent Data Analytics Services. IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 15, NO ... cavity-backed circular patch antenna fed by coaxial line [3], and eccentric coaxial line [4]. Conformal mapping has been exten-sively used to analyze scattering from eccentric annular aper-tures [1], [4]. In this letter, we shall consider an electrostatic po-tential penetration into an eccentric annular aperture in a thick conducting plane.
The microstrip antenna designs covered in this book are divided into two groups: compact microstrip antennas and broadband microstrip antennas. The book is organized into nine chapters. Chapter 1 presents an introduction and overview of recent advances in the design of both compact and broadband microstrip antennas.
It is based on a broadband eccentric annular monopole antenna connected to a delay line. The delay line length L is chosen to separate the structural and tag modes with a round-trip delay of about 1 ns. Two slots between the antenna ground plane and the circuitry have been introduced, as explained in section 2.5.2. Broadband Circularly Polarized Annular-Ring Microstrip ... Abstract: A wideband circularly polarized (CP) annular-ring patch antenna with two proximity-coupled L-probe feeds orientated to have phases of 0 deg and 90 deg, using a broadband 90 deg hybrid feed, is proposed. It is found that the current distribution for CP operation can be improved by cutting a smaller concentric circular slot on the ... Annular Slot Loaded High-Impedance Ground Plane - ECE/CIS
design of reconfigurable annular slot antenna (asa) for ... - CiteSeerX
US20110273351A1 - Wideband cavity-backed slot antenna ...
Small Patch/Slot Antenna with 53% Input ... - Semantic Scholar Jan 1, 2007 ... Design of wideband annular-ring patch/slot antenna: A small circu- ... concentric annular-ring patch, the annular-slot and the slotted ground-. A Low-Profile Reconfigurable Cavity-Backed Slot Antenna With ... A novel cavity-backed slot antenna, with the ability of reconfiguring the ... A Broadband Cavity-Backed Slot Radiating Element in Transmission Configuration .... Polarization Reconfigurable Eccentric Annular Ring Slot Antenna Design. Microstrip-Fed Dual-Frequency Annular-Slot Antenna ... - Arrow@DIT Jan 1, 2009 ... broadband, dual-band and multiband operation for slot antennas. ... complexity. In this paper, the annular-slot and concentric annular-split-. Eccentric annular slot patch antenna with frequency agility for UHF ...