Overview of Low-Cost GPS Antennas

Type

28367-00

GNAC1121A

ANGD003A520

active

GA26(3)

Micro Mouse

Mighty Mouse 2

Mighty Mouse (see note 6)

Big Brother (see note 7)

MK4

SM-25

SM-66

VIC1

dimensions (mm)

40x47x13

50x43x18

50x50x15

50x42x14

50x71x15

34x25x11

50x43x13

58x48x15

58x48x15

34x25x10.6

58x48x15

58x48x15

50x43x18.5

cable length (m)

5

6

5

5

2.5

3

5

5

5

3

5

5

6

mount

magnetic

magnetic

magnetic

magnetic/ screw down

magnetic/ suction

magnetic/ screw down

magnetic/ screw down

magnetic/ screw down

magnetic/ screw down

magnetic/ screw down

magnetic/ screw down

magnetic/ screw down

magnetic

connector

SMB

BNC

SMB

BNC

BNC

(see note 5)

(see note 5)

(see note 5)

(see note 5)

various

(see note 8)

(see note 5)

many types

power

5V@25mA

5V@20mA

5V@30mA

5V@32mA

5V@30mA

3to5V@11mA

2.5to5V@5mA

5V@10mA

5V@28mA

3-5V@11mA

5V@12mA

5V@28mA

5V@25mA

gain (dB)(4)

23 (+)

24 (+)

25 (-)

23 (+)

15 (?)

24(+?)

29 (-), 22 (+)

26(?)

30(?)

24(+)

26(+)

30(+)

25 (+)

noise (dB)

1.6

1.8

2.5

1.6

2

2.0 max

1.6 typ

1.5typ,2.5max

1.5typ,2.5max

2max

2.5max

2.0max

?

gain pattern

+3dB@90deg -5dB@20deg

+3dB@90deg 0dB@30deg -10dB@0deg

+2dB@90deg -2dB>20deg -6dB>15deg

+3dB@90deg -5dB@20deg

+1.5dB@90deg -1dB@45deg -6dB@10deg

+5dB@90deg -1dB@10deg

+3dB@90deg

+5dB@90deg -1dB@10deg

+5dB@90deg -1dB@10deg

+5dB@90deg -1dB@10deg

+5dB@90deg -1deg@10deg

+5dB@90deg -1deg@10deg

0dB>30deg -7dB@0deg

axial ratio

4dB@90deg

?

3dB@90deg

4dB@90deg

3dB@90deg

3dB typ

+3dB@90deg

3dBmax

3dBmax

3dBtyp

3dBmax

3dBmax

?

rejection

7dB@20MHz 12dB@30MHZ 20dB@50MHz 30dB@100MHz

25dB@100MHz

18dB@50MHz

7dB@20MHz 12dB@30MHz 20dB@50MHz 30dB@100MHz

15dB@50MHz 25dB@100MHz

LNA BW 2MHz

LNA BW 2.046MHz

?

?

LNA BW 2MHz min

?

?

?

op.temp.range (C)

-40/+85

-40/+100

-30/+85

-30/+80

-55/+85

-30/+85

-40/+80

-30/+85

-30/+85

-30/+85

-40/+85

-40/+85

?

price (US$)

50

56

100

65

100

?

89

59

59

AUS$95

43.70

42.60

?

1. Various other types available.
2. Actual measurements by Lowe show a max current of 20.9 mA, a max noise figure of 1.38 dB and a min gain of 27.9 dB (Ref: Richard Mclachlan).
3. Also available with MCX connector (GA 27) and marine (GA 28).
4. Perferrably the overall gain (antenna + pre-amp + cable) is given. The following symbols are used:
   • ? : don't know
   • - : gain without cable loss
   • + : gain with cable loss included.
5. FME connector with adaptors to BNC, TNC, SMA, SMB, MCX included.
6. Mighty Mouse is also available as a bulkhead version, it's called 'Skymaster'.
7. Big Brother is also available as a re-radiator (with a car cigarette lighter connector for power supply), enabling the use of external antennas with receivers that don't support external antennas or don't supply +5VDC.
8. BNC, TNC, FME, MMCX, MCX, SMA, SMB or SMC.