Pulse Characteristics of a Direct Antenna Modulation Transmitter

被引：20
作者：
Schab, Kurt [1 ]
Huang, Danyang [2 ]
Adams, Jacob J. [2 ]
机构：
[1] Santa Clara Univ, Dept Elect Engn, Santa Clara, CA 95053 USA
[2] North Carolina State Univ, Dept Elect & Comp Engn, Antennas & Electromagnet Lab, Raleigh, NC 27695 USA
来源：
IEEE ACCESS | 2019年 / 7卷
关键词：
Antenna measurements; electrically small antennas; narrowband antennas; time varying circuits; TRANSIENT-STATE;
D O I：
10.1109/ACCESS.2019.2902365
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Direct antenna modulation (DAM) methods using time-varying matching networks offer the possibility to reduce the detrimental effects on broadband signal transmission from a narrowband antenna. We propose time- and frequency-domain models for the effects of a DAM scheme for the transmission of ON-OFF-keyed RF signals and test the validity of the proposed models through over-the-air measurements at 27.12 MHz. Random bit sequences are transmitted separately using both a switched-mode DAM transmitter and a conventional transmitter and received in the far field. Comparison of measured data with our frequency-domain models shows that the DAM transmission method partially removes the effects of narrowband filtering due to the transmit antenna. Models and measurements also demonstrate that the removal of this filter improves the signal quality as observed in eye diagrams of the demodulated received signals. Finally, a simple time-domain model of the DAM transmitter is shown to predict the radiated transient signal under varying synchronization conditions.
引用
收藏
页码：30213 / 30219
页数：7
相关论文
共 21 条
  • [1] Balanis C. A., 1982, ANTENA THEORY
  • [2] PHYSICAL LIMITATIONS OF OMNI-DIRECTIONAL ANTENNAS
    CHU, LJ
    [J]. JOURNAL OF APPLIED PHYSICS, 1948, 19 (12) : 1163 - 1175
  • [3] Direct-signal modulation using a silicon microstrip patch antenna
    Fusco, VF
    Chen, Q
    [J]. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1999, 47 (06) : 1025 - 1028
  • [4] Galejs J., 1963, IEEE T COMMUN SYST, V11, P254, DOI [10.1109/TCOM.1963.1088740, DOI 10.1109/TCOM.1963.1088740]
  • [5] Gamble J. T., 1973, 916687 AD ROM AIR DE
  • [6] ELECTRONIC BROAD BANDING OF VLF/LF ANTENNAS FOR FSK RADIO COMMUNICATION
    HARTLEY, HF
    [J]. IEEE TRANSACTIONS ON COMMUNICATION TECHNOLOGY, 1971, CO19 (04): : 555 - &
  • [7] Janaswamy R, 2014, IEEE ANTENNAS PROP, P621, DOI 10.1109/APS.2014.6904641
  • [8] AUTOMATIC TUNING OF HIGH-Q ANTENNA FOR VLF FSK TRANSMISSION
    JOHANNESSEN, PR
    [J]. IEEE TRANSACTIONS ON COMMUNICATIONS SYSTEMS, 1964, CS12 (01): : 110 - &
  • [9] Switched Antenna Circuit With Increased Information Bandwidth
    Keller, Steven D.
    Palmer, W. Devereux
    Joines, William T.
    [J]. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 2010, 9 : 1045 - 1048
  • [10] BASEBAND-PULSE-ANTENNA TECHNIQUES
    LAMENSDORF, D
    SUSMAN, L
    [J]. IEEE ANTENNAS AND PROPAGATION MAGAZINE, 1994, 36 (01) : 20 - 30
123