HID Global Corporation SE3210 Benutzerhandbuch
Realize a simple tuning network by using two capacitors, one serial and one parallel.
Figure 9: Basic Antenna Tuning Network
Za Antenna impedance
Cs Serial Capacitor
Cp Parallel Capacitor
Rp Parallel damping resistor for Q-factor control
Ra Serial antenna resistance
La
Za Antenna impedance
Cs Serial Capacitor
Cp Parallel Capacitor
Rp Parallel damping resistor for Q-factor control
Ra Serial antenna resistance
La
Antenna inductance
For the capacitors C0G or NP0, dielectrics with a voltage rating larger than 50 VDC are
recommended.
In practice, Cs and Cp may consist of several parallel capacitors to get better granularity.
Be aware that HID is offering further documents, support and services in terms of antenna
In practice, Cs and Cp may consist of several parallel capacitors to get better granularity.
Be aware that HID is offering further documents, support and services in terms of antenna
design and support. These might require special or service level agreements. Contact your
sales manager for details about this offering.