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This paper deals with the implementation of a compact frequency reconfigurable antenna in a challenging environment being embedded in a laptop. The antenna structure is designed to be restricted in a volume of 3.3 cm3 (70mm∗12mm∗4mm). The antenna structure was originally developed through EM simulations using CST Microwave Studio and later prototyped and tested in a Laptop mockup. The antenna structure...
The advent of 4G LTE has ushered in a growing demand for embedded antennas that can cover a wide range of frequency bands from 698 MHz to 2.69 GHz. A novel active antenna design is presented in this paper that is capable of covering a wide range of LTE bands while being constrained to a 1.8 cm3 volume. The antenna structure utilizes Ethertronics EtherChip 2.0 to add tunability to the antenna structure...
A dual capacitive feed antenna solution is proposed to address the new challenges, on the RF front end, that LTE Carrier Aggregation has introduced. The antenna covers the frequency bands 690 MHz to 964 MHz and 1700MHz to 2700 MHz. The antenna has two feeding elements that are capacitively coupled to the same grounded folded loop, allowing an efficient use of the total volume allocated to the antenna,...
With the growing use of M2M [Machine to Machine] communication in the industry, it has become essential to have antennas in devices that cover a wide frequency range from 700MHz to 2700 MHz and work efficiently by being impedance matched under various environmental effects. This paper proposes a closed loop impedance matched antenna system solution to tackle this challenging issue. A novel and compact...
By utilizing the inherent symmetry of a folded loop structure, a novel active antenna solution is presented that can optimize the performance of the antenna in terms of efficiency for various user cases like the mobile phone in free space, in the hand or close to the head—right or left side. The principle is to excite two distinct modes, and we can note as much as 1.5 dB improvement in efficiency...
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