Beam Control in Unilaterally Coupled Active Antennas with Self-Oscillating Harmonic Mixers

Minoru SANAGI; Joji FUJIWARA; Kazuhiro FUJIMORI; Shigeji NOGI

doi:10.1093/ietele/e88-c.7.1375

Beam Control in Unilaterally Coupled Active Antennas with Self-Oscillating Harmonic Mixers

Minoru SANAGI, Joji FUJIWARA, Kazuhiro FUJIMORI, Shigeji NOGI

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Beam control using active antenna arrays with self-oscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The mixer has two ports for local oscillating (LO) signal. One is an output port extracting the LO signal. The other is an input port for an injection signal to synchronize the local oscillation. The mixers can be coupled unilaterally without other nonreciprocal components by connecting the output port to the input port in the next mixer. In the unilaterally coupled array, the phase differences of the LO signals between the adjacent mixers can be varied without phase shifters in injection locking state by changing the local free-running frequencies of the self-oscillating mixers. The receiving pattern can be controlled by combining the IF signals from the individual active antennas, which have phases associated with the LO signals. The IF is difference between the RF and double of the LO frequency so that arbitrary phase differences from 0 to 2π radian can be provided to the output IF signals. The experiments using the two- and three-element arrays demonstrated beam control capability.

Publication: IEICE TRANSACTIONS on Electronics Vol.E88-C No.7 pp.1375-1381

Publication Date: 2005/07/01

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DOI: 10.1093/ietele/e88-c.7.1375

Type of Manuscript: Special Section PAPER (Special Section on Recent Technologies of Microwave and Millimeter-Wave Devices Focusing on Miniaturization and Advancement in Performance with Their Applications)

Category: Active Circuits & Antenna

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Minoru SANAGI, Joji FUJIWARA, Kazuhiro FUJIMORI, Shigeji NOGI, "Beam Control in Unilaterally Coupled Active Antennas with Self-Oscillating Harmonic Mixers" in IEICE TRANSACTIONS on Electronics, vol. E88-C, no. 7, pp. 1375-1381, July 2005, doi: 10.1093/ietele/e88-c.7.1375.
Abstract: Beam control using active antenna arrays with self-oscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The mixer has two ports for local oscillating (LO) signal. One is an output port extracting the LO signal. The other is an input port for an injection signal to synchronize the local oscillation. The mixers can be coupled unilaterally without other nonreciprocal components by connecting the output port to the input port in the next mixer. In the unilaterally coupled array, the phase differences of the LO signals between the adjacent mixers can be varied without phase shifters in injection locking state by changing the local free-running frequencies of the self-oscillating mixers. The receiving pattern can be controlled by combining the IF signals from the individual active antennas, which have phases associated with the LO signals. The IF is difference between the RF and double of the LO frequency so that arbitrary phase differences from 0 to 2π radian can be provided to the output IF signals. The experiments using the two- and three-element arrays demonstrated beam control capability.
URL: https://globals.ieice.org/en_transactions/electronics/10.1093/ietele/e88-c.7.1375/_p

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@ARTICLE{e88-c_7_1375,
author={Minoru SANAGI, Joji FUJIWARA, Kazuhiro FUJIMORI, Shigeji NOGI, },
journal={IEICE TRANSACTIONS on Electronics},
title={Beam Control in Unilaterally Coupled Active Antennas with Self-Oscillating Harmonic Mixers},
year={2005},
volume={E88-C},
number={7},
pages={1375-1381},
abstract={Beam control using active antenna arrays with self-oscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The mixer has two ports for local oscillating (LO) signal. One is an output port extracting the LO signal. The other is an input port for an injection signal to synchronize the local oscillation. The mixers can be coupled unilaterally without other nonreciprocal components by connecting the output port to the input port in the next mixer. In the unilaterally coupled array, the phase differences of the LO signals between the adjacent mixers can be varied without phase shifters in injection locking state by changing the local free-running frequencies of the self-oscillating mixers. The receiving pattern can be controlled by combining the IF signals from the individual active antennas, which have phases associated with the LO signals. The IF is difference between the RF and double of the LO frequency so that arbitrary phase differences from 0 to 2π radian can be provided to the output IF signals. The experiments using the two- and three-element arrays demonstrated beam control capability.},
keywords={},
doi={10.1093/ietele/e88-c.7.1375},
ISSN={},
month={July},}

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TY - JOUR
TI - Beam Control in Unilaterally Coupled Active Antennas with Self-Oscillating Harmonic Mixers
T2 - IEICE TRANSACTIONS on Electronics
SP - 1375
EP - 1381
AU - Minoru SANAGI
AU - Joji FUJIWARA
AU - Kazuhiro FUJIMORI
AU - Shigeji NOGI
PY - 2005
DO - 10.1093/ietele/e88-c.7.1375
JO - IEICE TRANSACTIONS on Electronics
SN -
VL - E88-C
IS - 7
JA - IEICE TRANSACTIONS on Electronics
Y1 - July 2005
AB - Beam control using active antenna arrays with self-oscillating harmonic mixers has been investigated. The active antenna is composed of a patch antenna receiving RF signal and a parallel feedback type oscillator which operates as the self-oscillating harmonic mixer, and down-converts the received RF signal into IF signal. The mixer has two ports for local oscillating (LO) signal. One is an output port extracting the LO signal. The other is an input port for an injection signal to synchronize the local oscillation. The mixers can be coupled unilaterally without other nonreciprocal components by connecting the output port to the input port in the next mixer. In the unilaterally coupled array, the phase differences of the LO signals between the adjacent mixers can be varied without phase shifters in injection locking state by changing the local free-running frequencies of the self-oscillating mixers. The receiving pattern can be controlled by combining the IF signals from the individual active antennas, which have phases associated with the LO signals. The IF is difference between the RF and double of the LO frequency so that arbitrary phase differences from 0 to 2π radian can be provided to the output IF signals. The experiments using the two- and three-element arrays demonstrated beam control capability.
ER -