Miniaturized PIFA With Wideband Frequency Tuning and Active Matching for UAV Applications

Donghao Li; Changjiang Deng; Xice Zhang; Yuxuan Zhang

doi:10.1109/LAWP.2025.3632920

Miniaturized PIFA With Wideband Frequency Tuning and Active Matching for UAV Applications

Donghao Li
, Changjiang Deng^*
, Xice Zhang
, Yuxuan Zhang

^*Corresponding author for this work

School of Integrated Circuits and Electronics

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

Abstract

This letter presents an electrically small planar inverted-F antenna (PIFA) that utilizes frequency tuning and active matching for wideband coverage. It features independent transmit and receive ports, selected via a single-pole double-throw (SPDT) switch. In the transmit mode, varactor diode is introduced at the open end of the PIFA to dynamically change the resonance in wide frequency range. Short-circuited pin is added to increase the tuning ability. In the receive mode, a field-effect transistor (FET) is loaded at the feed port, which achieves wideband impedance matching by operating in its linear (ohmic) region. The size of the PIFA is merely 40×40 mm². The measured frequency tuning range and the active matching bandwidth can cover the entire 0.8-2 GHz band. The design provides a novel wideband miniaturized antenna scheme for anti-jamming in Unmanned Aerial Vehicle (UAV) applications.

Original language	English
Journal	IEEE Antennas and Wireless Propagation Letters
DOIs	https://doi.org/10.1109/LAWP.2025.3632920
Publication status	Accepted/In press - 2025

Keywords

Active matching
PIFA
frequency reconfigurable
miniaturization
wideband

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10.1109/LAWP.2025.3632920

Cite this

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title = "Miniaturized PIFA With Wideband Frequency Tuning and Active Matching for UAV Applications",

abstract = "This letter presents an electrically small planar inverted-F antenna (PIFA) that utilizes frequency tuning and active matching for wideband coverage. It features independent transmit and receive ports, selected via a single-pole double-throw (SPDT) switch. In the transmit mode, varactor diode is introduced at the open end of the PIFA to dynamically change the resonance in wide frequency range. Short-circuited pin is added to increase the tuning ability. In the receive mode, a field-effect transistor (FET) is loaded at the feed port, which achieves wideband impedance matching by operating in its linear (ohmic) region. The size of the PIFA is merely 40×40 mm2. The measured frequency tuning range and the active matching bandwidth can cover the entire 0.8-2 GHz band. The design provides a novel wideband miniaturized antenna scheme for anti-jamming in Unmanned Aerial Vehicle (UAV) applications.",

keywords = "Active matching, PIFA, frequency reconfigurable, miniaturization, wideband",

author = "Donghao Li and Changjiang Deng and Xice Zhang and Yuxuan Zhang",

note = "Publisher Copyright: {\textcopyright} 2002-2011 IEEE.",

year = "2025",

doi = "10.1109/LAWP.2025.3632920",

language = "English",

journal = "IEEE Antennas and Wireless Propagation Letters",

issn = "1536-1225",

publisher = "Institute of Electrical and Electronics Engineers Inc.",

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TY - JOUR

T1 - Miniaturized PIFA With Wideband Frequency Tuning and Active Matching for UAV Applications

AU - Li, Donghao

AU - Deng, Changjiang

AU - Zhang, Xice

AU - Zhang, Yuxuan

PY - 2025

Y1 - 2025

N2 - This letter presents an electrically small planar inverted-F antenna (PIFA) that utilizes frequency tuning and active matching for wideband coverage. It features independent transmit and receive ports, selected via a single-pole double-throw (SPDT) switch. In the transmit mode, varactor diode is introduced at the open end of the PIFA to dynamically change the resonance in wide frequency range. Short-circuited pin is added to increase the tuning ability. In the receive mode, a field-effect transistor (FET) is loaded at the feed port, which achieves wideband impedance matching by operating in its linear (ohmic) region. The size of the PIFA is merely 40×40 mm2. The measured frequency tuning range and the active matching bandwidth can cover the entire 0.8-2 GHz band. The design provides a novel wideband miniaturized antenna scheme for anti-jamming in Unmanned Aerial Vehicle (UAV) applications.

AB - This letter presents an electrically small planar inverted-F antenna (PIFA) that utilizes frequency tuning and active matching for wideband coverage. It features independent transmit and receive ports, selected via a single-pole double-throw (SPDT) switch. In the transmit mode, varactor diode is introduced at the open end of the PIFA to dynamically change the resonance in wide frequency range. Short-circuited pin is added to increase the tuning ability. In the receive mode, a field-effect transistor (FET) is loaded at the feed port, which achieves wideband impedance matching by operating in its linear (ohmic) region. The size of the PIFA is merely 40×40 mm2. The measured frequency tuning range and the active matching bandwidth can cover the entire 0.8-2 GHz band. The design provides a novel wideband miniaturized antenna scheme for anti-jamming in Unmanned Aerial Vehicle (UAV) applications.

KW - Active matching

KW - PIFA

KW - frequency reconfigurable

KW - miniaturization

KW - wideband

UR - https://www.scopus.com/pages/publications/105021975937

U2 - 10.1109/LAWP.2025.3632920

DO - 10.1109/LAWP.2025.3632920

M3 - Article

AN - SCOPUS:105021975937

SN - 1536-1225

JO - IEEE Antennas and Wireless Propagation Letters

JF - IEEE Antennas and Wireless Propagation Letters

ER -

Miniaturized PIFA With Wideband Frequency Tuning and Active Matching for UAV Applications

Abstract

Keywords

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