-
Whip Antennas
A whip antenna is a flexible rod antenna, usually between 1/10 and 5/8 wavelength long, supported on a base insulator. These capacitive antennas or electric doublets are insulated from the structure (plane, car or other product) and the whole assembly radiates. The standard, wire monopole
-
AN-00501 - Understanding Antenna Specifications and Operation
Since voluminous texts have been written about each of the many antenna styles, it is unnecessary to cover them all here. This article will focus only on those styles which are commonly used in low-power handheld. products: dipole and monopole whips. These styles cover a wide range of available
-
Matching Small Loop Antennas to rfPIC(TM) Devices
In close proximity to the human body, small loop antennas outperform small dipole and monopole antennas [1]. Their size, robustness and low manufacturing cost have made small loops the most popular antenna for use in miniature key fob transmitters. A small loop antenna typically consists
-
Smaller really is better
. This March, Vincent and URI, with the help of the Naval Undersea Warfare Center and its antenna test range on Fishers Island, N. Y., put 14 versions of the Distributed Load Monopole (DLM) antennas through a battery of validation tests. The tests used the same methods and instrumentation as those
-
Planar Antennas
applications. First, a variety of planar monopoles with finite ground planes are reviewed. Next, the roll antennas with enhanced radiation performance are outlined. After that, the planar antennas printing on PCBs are described. A directional antipodal Vivaldi antenna is also presented for UWB applications
-
Magnetron and Microwave Oven Design to Solve Wi-Fi - Interference Issues
1. Here, the ground plane of the patch antenna has been used to form a shielding between antenna and environment. The other example is a CPW printed monopole antenna, embedded in a low-loss dielectric body to contain the fields and thus minimize reactive tuning, see Figure 2. Furthermore the short
-
Low-Frequency Magnetic Transmitter Design (.pdf)
between a mag-. netic field/electric field versus an electromagnetic. c. =. [meters]. wave. A magnetic field is a result of electrical charge. in motion, or a magnetic dipole. One also only gets. c = 3 x 108 m/s. magnetic dipoles and not monopoles, as is the case for. electrical particles. A magnetic
-
Low Frequency Magnetic Transmitter Design
, or a magnetic dipole. One also only gets. magnetic dipoles and not monopoles, as is the case for. electrical particles. A magnetic field can, therefore, be. An antenna approaching this dimension is impractical,. represented by field lines that form continuous loops. but at 500 MHz the wavelength is only 60