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Designing PCB Antennas

With the introduction of many applications into the 2.4 GHz and 915 MHz bands for commercial and consumer use, the demand for compact PCB antennas operating in the ISM bands is ever-increasing. As the name suggests, a PCB antenna is printed directly on the board.
Learn more about PCB antennas in the following reference designs provided below:-

Cost-optimized Planar F-Antenna: 

pcs antenna 1

This reference design implements a Planar F Antenna for cost-constrained applications. It can be used on a low-cost 1.6 mm FR-4 substrate. The design features an optional patch element used for capacitive proximity detection of an object like hand or finger in the antenna near-field. This maximizes maximum output power and protects antenna detuning. The design provides a 50-ohm output and 0 dBi omni-directional gain with no impedance matching components required.  The antenna is designed to work in 868 MHz and 915 MHz bands. More on this Reference Design

ISM Band PCB Antenna with Excellent Efficiency: 

This reference design provides a medium size, low cost monopole PCB antenna solution with size 38 x 25 mm. The antenna is mainly intended for the ISM (Industrial, Scientific and Medical) bands of 868 MHz and 915 MHz. The antenna can be used in two different modes. If configured in Single Band Mode, this is ideal for 868 MHz, 915 MHz or 920 MHz operation. If configured in Dual Band Mode, it operates at 868 MHz and 2.4 GHz. The design is built around a sub- 1 GHz system-on-chip (SoC) CC1110Fx, CC1111Fx designed for very low power wireless applications. It combines a RF transceiver CC1101 and 8051 MCU with powerful features on a single chip, which can operate in very low-power modes. The harmonic levels are well within the regulatory standards. The design achieves excellent efficiency and a maximum gain of approximately 3 to 5 dBi. More on this Reference Design


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