GHz LOW NOISE AMPLIFIER WHM AE 1

Transcription

1 .. GHz LOW NOISE AMPLIFIER WHM-AE WHM-AE LNA is a low noise figure, wideband, and high linearity SMT packaged amplifier. The amplifier offers typical noise figure of.9 db and output IP of. dbm at the frequency range from. GHz to. GHz of L, S, and C bands. WHM-AE provides excellent performance consistency between each part due to the high volume precision production with advance quality control. WHM-AE LNA is most suitable for cellular base stations, wireless data communications, tower top receiver amplifiers, last-mile wireless communication systems, and wireless measurement applications. Key Features: Impedance: Ohm MTBF : >,, hrs (7 Years) LGA (land grid array) package: 6-pin Low Noise:.9 db Output IP : dbm Gain:. db P db :. dbm Single power supply: +V Frequency Range:. ~. GHz Operating Temperature: - ~ +8 ºC Input Return Losses: 6 db or better Output Return Losses: db or better Small size:. x. x.6 (. mm x. mm x. mm) Built-in Functions: DC blocks at input and output, temperature compensation circuits, and auto DC biases. Specifications: a) Table Summary of the electrical specifications WHM-AE at room temperature Index Testing Item Symbol Test Constraints Nom (RT) Min Max Unit Gain S.. GHz. db Gain Variation G.. GHz +/-. +/-. db Input Return Loss S.. GHz 7 6 db Output Return Loss S.. GHz db Reverse Isolation S.. GHz 8 6 db 6 Noise figure NF.. GHz.9. db 7 Output Power db compression Point 8 Output-Third-Order Interception point P db.. GHz dbm IP Two-Tone, P out + dbm each, MHz separation 9 dbm Current Consumption I dd V dd = + V ma Power Supply Voltage V dd V Thermal Resistance R th,c Junction to case Operating Temperature T o - +8 Maximum Average RF Input Power o C/W P IN, MAX.. GHz dbm o C Specifications are subject to change without notice. MTBF: Mean Time Between Failure, Per TR-NWT-, ISSUE, SEPTEMBER, 99, T= o C

2 b) Passband Frequency Response As shown in Figure, the typical gain of the WHM-AE is. db across. to. GHz. The typical input and output return losses are 7 db and db across the frequency of. to. GHz, respectively. Figure shows the measured P db and IP of the WHM-AE. The typical P db and IP are dbm and dbm in the frequency range of. to. GHz, respectively. Figure illustrates the measured noise figure performance at full temperature. The measured results include the test fixture loss of approximately. db. The noise figure is. db (including. db test fixture loss) across the frequency range of. to. GHz at room temperature. At 8 C, WHM-AE only has. db noise increases. At C, WHM-AE offers approximately. db less noise figure than that at room temperature. Figure demonstrates the stability factor k of the amplifier. Figure is the block diagram of internal circuit of WHM-AE. It is a one-stage amplifier with the DC block capacitors at the input and output RF ports. All the RF matching networks, DC bias circuitries, and temperature compensation circuits are integrated in. Figure 6 demonstrates the application schematic diagram of WHM-AE. It requires the external decoupling capacitors C of. uf to build a LNA with WHM-AE. C is to be as close to Pin as possible. This capacitor eliminates the parasitic. The +V DC is applied at Pin. No DC block capacitor is required for both input and output RF ports. The NC pins connected to ground are recommended. For +V line trace length being longer than 6 inch without a decoupling capacitor, an additional. ~. uf de-coupling capacitor with minimum rating voltage of V may be needed across the +V line to ground. The capacitor must be rated in the temperature range of - C to 8 C to ensure the entire circuit working in the specified temperature range. Figure 7 shows the mechanical outline and recommended motherboard layout of WHM-AE. Plenty of ground vias on the motherboard are essential for the RF grounding. The width of the -Ohm lines at the input and output RF ports may be different for different property of the substrate. WHM-AE C WHM-AE IP and PdB S S S S, S, S (db) - - dbm IP (dbm) PdB (dbm) FIG. Typical small signal performance. FIG. Typical P db and IP at room temperature.

3 NF (db) WHM-AE Noise Figure WHM-AE Stability Coefficient k..9 C.8 -C.7 8C k FIG. Noise figure performance at full temperature FIG. Measured stability factor k FIG. Block diagram of internal circuit. FIG. 6 Typical application schematic for WHM-AE

4 WHM-AE Mechanical Outline, WHM-S: FIG. 7 WHM-AE outline Ordering Information Model Number WHM-AE Waffle pack with the capacity of pieces ( x ) is used for the packing. Contact factory for tape and reel packing option for higher volume requirements.

5 Small Signal S-Parameters:!WHM-AE!s-parameters at Vds=V, Id= ma, including the test board.!last updated /7/. # GHZ s MA R!F(GHz) MAG S ANG S MAG S ANG S MAG S ANG S MAG S ANG S