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SC14D Reference Design Antenna Product Sheet

Date: October 23, 2013

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1. SC14D Reference Design Antenna Product Sheet

Dialog Semiconductor BV has developed the SC14CVMDECT_AF01_SF01 design with the

SC14CVMDECT_SFxx module. To supports FAD (e.g. for FP operation), this design

includes a printed antenna pattern. This document describes this printed antenna design.

1.1 Quick Specification Sheet

Parameter

Value

Condition

Frequency of Operation

(nominal)

1860MHz - 1940MHz

S11 < -8dB

Antenna Type

Printed monopole with

integrated transformer

#layers of antenna design

Antenna Physical Area

4.25mm x 19.00mm

To groundplane edges

Maximum Antenna Gain

0.0 dBi

-0.1 dBi

Carrier 00

Carrier 02

Carrier 04

2. Description

The printed antenna that is part of the SC14CVMDECT_AF01_SF01 design can also be

used directly, as part of the host PCB design.

Figure 1. SC14CVMDECT_AF01_SF01 with external printed antenna design

In that case, the host PCB design must adhere to the same PCB layer stackup (material,

layer spacings) as mentioned in section 2.1.1. The antenna must be located in a corner

and spaced from the SC14CVMDECT SFxx module in the same way as the

SC14CVMDECT_AF01_SF01 design. Also the ground plane design (especially the spacing

with respect to the antenna structure) should follow exactly the same outline as in the

SC14CVMDECT_AF01_SF01 design. The printed antenna is not 50 Ohms by itself. It

requires a printed transformer on the inner layer (indicated in red in the below picture)

that is part of the SC14CVMDECT_AF01_SF01 design. The layout of this component is

Summary of content (5 pages)

PAGE 1
SC14D Reference Design Antenna Product Sheet Date: October 23, 2013 1. SC14D Reference Design Antenna Product Sheet Dialog Semiconductor BV has developed the SC14CVMDECT_AF01_SF01 design with the SC14CVMDECT_SFxx module. To supports FAD (e.g. for FP operation), this design includes a printed antenna pattern. This document describes this printed antenna design. 1.
PAGE 2
SC14D Reference Design Antenna Product Sheet Date: October 23, 2013 critical to the antenna performance and should be copied accurately from the available gerber files, obtainable through your Dialog representative. Figure 2. Highlight of printed antenna pattern The transformer should be placed on layer 3. Layer 4 should have continuous ground beneath the transformer pattern. No other signals/traces should be in the vicinity of the transformer structure. Figure 3.
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SC14D Reference Design Antenna Product Sheet Date: October 23, 2013 2.1.1 Design Parameters In order to be allowed to leverage the CVMDECT Modular Approval for the SC14CVMDECT_AF01_SF01 design, the PCB should meet the following specifications: • PCB material: FR4 • Dimensions: length x width x thickness = 25.9mm x 25.0mm x 0.
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SC14D Reference Design Antenna Product Sheet Date: October 23, 2013 2.2 Frequency Bandwidth The operational frequency bandwidth (S11 < -8dB) has been measured using a calibrated Agilent N9923A and found to be 1860MHz – 1940MHz, as shown in the below measurement plot: Figure 5. Measured S11 plot of printed monopole 2.3 Maximum Antenna Gain The maximum antenna gain has been measured by Nemko AS.
PAGE 5
SC14D Reference Design Antenna Product Sheet Date: October 23, 2013 2.4 Radiation Pattern An indicative plot of the antenna’s radiation pattern is shown here below (from simulation): Figure 6. Simulation results of printed monopole Note that the simulated antenna gain is approximately 1dB higher than measured. This is because the simulations didn’t take into account structure losses.