CMOS antenna tuning unit for 2.4 GHz ISM band

• Antenna matching is improved with adaptive 0.35 μm CMOS circuits based on switched shunt capacitors arranged in capacitor banks and external series inductors. The simulated circuits are optimized for the ISM 2.4 GHz band. The circuits provide a VSWR ⩽ 2 match for every impedance with VSWR ⩽ 5. There is a 1 dB power loss for a perfect 50 Ω → 50 Ω transformation, a break-even point at VSWR = 1.5, and a 3dB increase in delivered power for VSWR = 4.3

Subject headings

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Keyword

1 dB

3 dB

2.4 GHz

0.35 micron

reconfigurable matching

impedance matching

external series inductors

capacitor banks

switched shunt capacitors

antenna matching

ISM band

CMOS circuits

antenna tuning unit

Publication and Content Type

kon (subject category)

ref (subject category)