A novel design for an electrically small high-frequency (HF) antenna suitable for coastal radar applications is presented. The principle design objectives were to develop an HF antenna resonant at multiple frequencies that is also compact and easily transportable for deployment to coastal sites and on...
Similarly the 4-arm log-periodic antenna suffers from twice the size requirement as compared to the spiral or the sinuous. The sinuous and log-periodic antennas that are commercially available or reported in literature are rated only for low powers (2 - 10 W) and are not low-profile ...
A low-profile antenna design for millimeter wave radio link applications is presented. The antenna has a simple planar array construction, high gain and low enough sidelobes to be ETSI compliant. Measurement with a hologram CATR (compact antenna test range) is also discussed and the results are...
active antenna and M-607 active loop are top performers designed for portable use or roof top installation. Considering nautical applications including NAVTEX and LORAN, our line of marine antennas includes the MH-920 active antenna for LF through HF and the ML-420 active antenna for LF ...
This paper proposes a high-frequency (HF) band on an extremely low-profile antenna that can be mounted on the roof of a car. This antenna generates a monopole-like omnidirectional radiation pattern despite the low height of the patch sha... SY Cho,JY Chung - 《Journal of Korean Institute...
Item:GPS 4G LTE MIMO Screw Mount Omni-directional Antenna;GPS Frequency:1575.42MHz±1.023 MHz;4G LTE Frequency:698~960/1710~2690MHz;Antenna Material:ABS;Mounting Method:Screw Thru Hole of 12mm Diameter;Impendence:50 ohm;Extension cables:3M length RG174;C
The Loop-Slot Antenna design provides a large range of tunable frequencies for transceiving while maintaining a small profile perfect for mounting on vehicles or other objects where a large antenna is impractical or infeasible. As compared with known vertical polarization antennas that have considerable...
Hence, conformal (i.e., low-profile) antennas are needed to allow a ship to communicate after sustaining battle damage or encountering heavy weather. ... HK Purvis 被引量: 0发表: 1987年 A Feasibility Study of a Shipboard Combat Survivable HF Antenna Design. This thesis investigates the feasi...
For instance, the ideal length is 375 cm at 20 MHz (HF band) and 83 cm at 90 MHz (VHF band). Such a high profile not only makes a vehicle more likely to be exposed to opponents but also degrades its mobility. In this context, a whip antenna is often pulled and bent as in ...
In this paper, an extremely low-profile ferrite dipole antenna operating on the VHF band (30–300 MHz) is proposed. The design antenna consists of 44 plate-type ferrite cells arranged into two stacked ferrite layers: a bottom ferrite layer with 2 ×