|
 |
|
|
|
- The Power Helical Antenna(PHA) has been designed for use
in L1 Band GPS
(Global Positioning System) receivers. |
|
|
|
 |
|
|
|
- The PHA is a small ceramic cylinder (10mm diameter by 18mm
length), which has a cardioid type Right Hand Circular Pattern
(RHCP).
- The omni directional nature of the PHA ¡®s pattern, along with
a 3 dBi beam width (greater than 120 degrees), gives the host
GPS receiver a greater field of vision above the horizon and
accessibility to more satellites.
- Ability to receive right-hand circularly polarized signals
above the antenna¡¯s horizon and left-hand circularly polarized
signals below the horizon, thus assisting GPS reception in built-up
areas and other multi path environments.
- Even in close proximity to objects including human tissue,
the receiver performance is not affected, so the GPS receiver¡¯s
sensitivity is not impaired when used in hand-held applications.
- If the PHA is used with NeoGPS CF which has its internal
rechargeable battery, it will provide the Pocket PC users with the
excellent platform for carrying and using the GPS on mobile
fashion.
|
|
 |
|
| Parameter |
PHA |
Units |
| Frequency Band |
1575.42¡¾2 |
Mhz |
| Typical Gain |
20 |
dBi |
| Maximum Noise Figure |
1.50 |
dB |
| Output Impedance |
50 |
Ohms |
| Maximum VSWR |
2.0:1 |
|
| Supply Voltage |
3.0-5.0 |
V |
| Typical Current Consumption |
20 |
mA |
| Input Third-Order Intercept Point |
-14 |
dBm |
| Temperature Range |
-40 to +85 |
¡ÆC |
| - All specifications at Vcc
= 5.0 V and frequency = 1575.42 ¡¾2MHz at +23¡ÆC¡¾5¡ÆC unless
otherwise specified. |
|
|
 |
|
|
|
- The PHA has efficient and excellent performance in variable
angles of orientation and in the degree 0(or 360), it does best. |
|
 |
 |