DM163027-5 Microchip Technology, DM163027-5 Datasheet - Page 39

• Manufacturer Part Number: DM163027-5
• Description: KIT DEMO PICDEM Z MRF24J40
• Manufacturer: Microchip Technology
• Series: PICDEM™ Zr
• Type: 802.15.4r

Specifications of DM163027-5

• Frequency: 2.4GHz
• Wireless Frequency: 2.4 GHz
• Interface Type: RS-232
• For Use With/related Products: MRF24J40MA
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

FIGURE C-13:
FIGURE C-14:
© 2008 Microchip Technology Inc.
Note 1:
1.0
Dimensions are in mm and tolerance is +/– 0.05 mm.
IMPEDANCE OF THE PCB ANTENNA WITH VOLTAGE STANDING WAVE RATIO
The most critical part of maintaining proper impedance is adhering to the specified
dimensions of the printed circuit board antenna (see Figure C-14). The antenna dimen-
sions, if altered, will change the specified impedance. As an example, a 1 mm variance
will shift the impedance by 5-10 MHz.
PRINTED CIRCUIT BOARD ANTENNA DIMENSIONS
Figure C-15 and Figure C-16 illustrate simulation results of this PCB antenna. Note the
simulation results are very close to the measurements.
Note:
8.6
This part has been simulated using a HFSS™ simulator by Ansoft
Corporation.
5.3
1.2
0.85
PICDEM™ Z 2.4 GHz RF Card
0.72
1.0
6.0
2.0
3.8
1.54
22.0
1.0
0.5
1.3
1.0
(1)
3.82
9.6
4.2
6.6
1.2
4.3
DS51524C-page 35
1.0
6.6